diff --git a/.gitignore b/.gitignore
index e910fd5..c605111 100644
--- a/.gitignore
+++ b/.gitignore
@@ -27,3 +27,7 @@ m4/lt~obsolete.m4
src/adplay
src/config.h*
src/.libs/
+gnulib/*.a
+gnulib/stddef.h
+gnulib/sys/
+gnulib/unistd.h
diff --git a/Makefile.am b/Makefile.am
index ef1d921..580ce1e 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,7 +1,7 @@
-SUBDIRS = src doc
+SUBDIRS = gnulib src doc
-EXTRA_DIST = adplay.spec adplay.qpg
+EXTRA_DIST = adplay.spec adplay.qpg m4/gnulib/gnulib-cache.m4
AUTOMAKE_OPTIONS = dist-bzip2
-ACLOCAL_AMFLAGS=-I m4
+ACLOCAL_AMFLAGS="-Im4" "-Im4/gnulib"
diff --git a/README b/README
index 2051528..2cea1dd 100644
--- a/README
+++ b/README
@@ -29,7 +29,7 @@ for any reason or you are hacking on the build system, you can run each step
manually instead of using autoreconf:
libtoolize -c -f --install
-aclocal -I m4
+aclocal -Im4 -Im4/gnulib
autoheader
automake -a -c
autoconf
diff --git a/configure.ac b/configure.ac
index 65ef204..6529b6b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,21 +1,24 @@
# Tell autoconf we're compiling a C++ program using automake and libtool.
AC_INIT([adplay],[1.9])
AC_CONFIG_SRCDIR(src/adplay.cc)
-AC_CONFIG_FILES(Makefile src/Makefile doc/Makefile)
+AC_CONFIG_FILES(Makefile gnulib/Makefile src/Makefile doc/Makefile)
AC_CANONICAL_TARGET
AM_INIT_AUTOMAKE
-AC_CONFIG_MACRO_DIRS([m4])
+AC_CONFIG_MACRO_DIRS([m4 m4/gnulib])
AC_CONFIG_HEADERS([src/config.h])
-LT_INIT
-AC_LANG(C++)
# Check if we got a sane C/C++ compilation environment.
AC_PROG_INSTALL
AC_PROG_CC
+gl_EARLY
AC_PROG_CXX
AC_PROG_CPP
AC_PROG_CXXCPP
+LT_INIT
+
+AC_LANG(C++)
+
# Nothing works without these libraries...
AC_CHECK_LIB(stdc++,main,,AC_MSG_ERROR([libstdc++ not installed]))
PKG_CHECK_MODULES([adplug], [adplug >= 2.0],,[
@@ -24,10 +27,6 @@ I will try to do the old-style library search for which i cannot check \
versions. Please bear in mind that i am requiring at least version 1.4.])
AC_CHECK_LIB(adplug,main,,AC_MSG_ERROR([*** AdPlug not installed ***]))])
-# Check if getopt header is installed on this system
-AC_CHECK_HEADERS([getopt.h], ,
- AC_SUBST(GETOPT_SOURCES, [getopt.c getopt1.c getopt.h]))
-
# Save compiler flags and set up for compiling test programs
oldlibs="$LIBS"
oldcppflags="$CPPFLAGS"
@@ -211,6 +210,8 @@ fi
AC_SUBST([drivers])
+gl_INIT
+
AC_OUTPUT
# Display user informative configuration output
diff --git a/gnulib.txt b/gnulib.txt
new file mode 100644
index 0000000..cfc11e7
--- /dev/null
+++ b/gnulib.txt
@@ -0,0 +1,16 @@
+gnulib is a tool and library that can provide implementation of functionality not available on all operating systems and libc implementations.
+
+Adplug currently uses gnulib to provide getopt_long().
+
+To refresh to the latest version, do the following steps.
+
+* Remove the old instance
+* clone the gnulib repository outside of the Adplug source tree (In this example it is done in the parent directory)
+* Reimport gnulib
+
+rm -Rf m4/gnulib gnulib
+pushd .
+cd ..
+git clone https://git.savannah.gnu.org/git/gnulib.git
+popd
+../gnulib/gnulib-tool --m4-base m4/gnulib/ --source-base gnulib --no-vc-files --import getopt-gnu
diff --git a/gnulib/Makefile.am b/gnulib/Makefile.am
new file mode 100644
index 0000000..d34b8ad
--- /dev/null
+++ b/gnulib/Makefile.am
@@ -0,0 +1,455 @@
+## DO NOT EDIT! GENERATED AUTOMATICALLY!
+## Process this file with automake to produce Makefile.in.
+# Copyright (C) 2002-2023 Free Software Foundation, Inc.
+#
+# This file is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This file is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this file. If not, see .
+#
+# As a special exception to the GNU General Public License,
+# this file may be distributed as part of a program that
+# contains a configuration script generated by Autoconf, under
+# the same distribution terms as the rest of that program.
+#
+# Generated by gnulib-tool.
+# Reproduce by:
+# gnulib-tool --import \
+# --lib=libgnu \
+# --source-base=gnulib \
+# --m4-base=m4/gnulib \
+# --doc-base=doc \
+# --tests-base=tests \
+# --aux-dir=. \
+# --no-conditional-dependencies \
+# --no-libtool \
+# --macro-prefix=gl \
+# --no-vc-files \
+# getopt-gnu
+
+AUTOMAKE_OPTIONS = 1.14 gnits
+
+SUBDIRS =
+noinst_HEADERS =
+noinst_LIBRARIES =
+noinst_LTLIBRARIES =
+EXTRA_DIST =
+BUILT_SOURCES =
+SUFFIXES =
+MOSTLYCLEANFILES = core *.stackdump
+MOSTLYCLEANDIRS =
+CLEANFILES =
+DISTCLEANFILES =
+MAINTAINERCLEANFILES =
+# No GNU Make output.
+
+AM_CPPFLAGS =
+AM_CFLAGS =
+
+noinst_LIBRARIES += libgnu.a
+
+libgnu_a_SOURCES =
+libgnu_a_CFLAGS = $(AM_CFLAGS) $(GL_CFLAG_GNULIB_WARNINGS)
+libgnu_a_LIBADD = $(gl_LIBOBJS)
+libgnu_a_DEPENDENCIES = $(gl_LIBOBJS)
+EXTRA_libgnu_a_SOURCES =
+
+## begin gnulib module absolute-header
+
+# Use this preprocessor expression to decide whether #include_next works.
+# Do not rely on a 'configure'-time test for this, since the expression
+# might appear in an installed header, which is used by some other compiler.
+HAVE_INCLUDE_NEXT = (__GNUC__ || __clang__ || 60000000 <= __DECC_VER)
+
+## end gnulib module absolute-header
+
+## begin gnulib module gen-header
+
+# In 'sed', replace the pattern space with a "DO NOT EDIT" comment.
+SED_HEADER_NOEDIT = s,.*,/* DO NOT EDIT! GENERATED AUTOMATICALLY! */,
+
+# '$(SED_HEADER_STDOUT) -e "..."' runs 'sed' but first outputs "DO NOT EDIT".
+SED_HEADER_STDOUT = sed -e 1h -e '1$(SED_HEADER_NOEDIT)' -e 1G
+
+# '$(SED_HEADER_TO_AT_t) FILE' copies FILE to $@-t, prepending a leading
+# "DO_NOT_EDIT". Although this could be done more simply via:
+# SED_HEADER_TO_AT_t = $(SED_HEADER_STDOUT) > $@-t
+# the -n and 'w' avoid a fork+exec, at least when GNU Make is used.
+SED_HEADER_TO_AT_t = $(SED_HEADER_STDOUT) -n -e 'w $@-t'
+
+# Use $(gl_V_at) instead of $(AM_V_GEN) or $(AM_V_at) on a line that
+gl_V_at = $(AM_V_GEN)
+
+## end gnulib module gen-header
+
+## begin gnulib module getopt-posix
+
+BUILT_SOURCES += $(GETOPT_H) $(GETOPT_CDEFS_H)
+
+# We need the following in order to create when the system
+# doesn't have one that works with the given compiler.
+if GL_GENERATE_GETOPT_H
+getopt.h: getopt.in.h $(top_builddir)/config.status $(ARG_NONNULL_H)
+ $(gl_V_at)$(SED_HEADER_STDOUT) \
+ -e 's|@''GUARD_PREFIX''@|GL|g' \
+ -e 's|@''HAVE_GETOPT_H''@|$(HAVE_GETOPT_H)|g' \
+ -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+ -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+ -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+ -e 's|@''NEXT_GETOPT_H''@|$(NEXT_GETOPT_H)|g' \
+ -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
+ $(srcdir)/getopt.in.h > $@-t
+ $(AM_V_at)mv $@-t $@
+else
+getopt.h: $(top_builddir)/config.status
+ rm -f $@
+endif
+
+if GL_GENERATE_GETOPT_CDEFS_H
+getopt-cdefs.h: getopt-cdefs.in.h $(top_builddir)/config.status
+ $(AM_V_GEN)$(SED_HEADER_STDOUT) \
+ -e 's|@''HAVE_SYS_CDEFS_H''@|$(HAVE_SYS_CDEFS_H)|g' \
+ $(srcdir)/getopt-cdefs.in.h > $@-t
+ $(AM_V_at)mv $@-t $@
+else
+getopt-cdefs.h: $(top_builddir)/config.status
+ rm -f $@
+endif
+
+MOSTLYCLEANFILES += getopt.h getopt.h-t getopt-cdefs.h getopt-cdefs.h-t
+
+if GL_COND_OBJ_GETOPT
+libgnu_a_SOURCES += getopt.c getopt1.c
+endif
+
+EXTRA_DIST += getopt-cdefs.in.h getopt-core.h getopt-ext.h getopt-pfx-core.h getopt-pfx-ext.h getopt.in.h getopt_int.h
+
+## end gnulib module getopt-posix
+
+## begin gnulib module gettext-h
+
+libgnu_a_SOURCES += gettext.h
+
+## end gnulib module gettext-h
+
+## begin gnulib module snippet/arg-nonnull
+
+# Because this Makefile snippet defines a variable used by other
+# gnulib Makefile snippets, it must be present in all makefiles that
+# need it. This is ensured by the applicability 'all' defined above.
+
+ARG_NONNULL_H=$(srcdir)/arg-nonnull.h
+
+EXTRA_DIST += arg-nonnull.h
+
+## end gnulib module snippet/arg-nonnull
+
+## begin gnulib module snippet/c++defs
+
+# Because this Makefile snippet defines a variable used by other
+# gnulib Makefile snippets, it must be present in all makefiles that
+# need it. This is ensured by the applicability 'all' defined above.
+
+CXXDEFS_H=$(srcdir)/c++defs.h
+
+EXTRA_DIST += c++defs.h
+
+## end gnulib module snippet/c++defs
+
+## begin gnulib module snippet/warn-on-use
+
+# Because this Makefile snippet defines a variable used by other
+# gnulib Makefile snippets, it must be present in all makefiles that
+# need it. This is ensured by the applicability 'all' defined above.
+
+WARN_ON_USE_H=$(srcdir)/warn-on-use.h
+
+EXTRA_DIST += warn-on-use.h
+
+## end gnulib module snippet/warn-on-use
+
+## begin gnulib module stddef
+
+BUILT_SOURCES += $(STDDEF_H)
+
+# We need the following in order to create when the system
+# doesn't have one that works with the given compiler.
+if GL_GENERATE_STDDEF_H
+stddef.h: stddef.in.h $(top_builddir)/config.status
+ $(gl_V_at)$(SED_HEADER_STDOUT) \
+ -e 's|@''GUARD_PREFIX''@|GL|g' \
+ -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+ -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+ -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+ -e 's|@''NEXT_STDDEF_H''@|$(NEXT_STDDEF_H)|g' \
+ -e 's|@''HAVE_MAX_ALIGN_T''@|$(HAVE_MAX_ALIGN_T)|g' \
+ -e 's|@''HAVE_WCHAR_T''@|$(HAVE_WCHAR_T)|g' \
+ -e 's|@''REPLACE_NULL''@|$(REPLACE_NULL)|g' \
+ $(srcdir)/stddef.in.h > $@-t
+ $(AM_V_at)mv $@-t $@
+else
+stddef.h: $(top_builddir)/config.status
+ rm -f $@
+endif
+MOSTLYCLEANFILES += stddef.h stddef.h-t
+
+EXTRA_DIST += stddef.in.h
+
+## end gnulib module stddef
+
+## begin gnulib module sys_types
+
+BUILT_SOURCES += sys/types.h
+
+# We need the following in order to create when the system
+# doesn't have one that works with the given compiler.
+sys/types.h: sys_types.in.h $(top_builddir)/config.status
+ $(AM_V_GEN)$(MKDIR_P) '%reldir%/sys'
+ $(AM_V_at)$(SED_HEADER_STDOUT) \
+ -e 's|@''GUARD_PREFIX''@|GL|g' \
+ -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+ -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+ -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+ -e 's|@''NEXT_SYS_TYPES_H''@|$(NEXT_SYS_TYPES_H)|g' \
+ -e 's|@''WINDOWS_64_BIT_OFF_T''@|$(WINDOWS_64_BIT_OFF_T)|g' \
+ -e 's|@''WINDOWS_STAT_INODES''@|$(WINDOWS_STAT_INODES)|g' \
+ $(srcdir)/sys_types.in.h > $@-t
+ $(AM_V_at)mv $@-t $@
+MOSTLYCLEANFILES += sys/types.h sys/types.h-t
+
+EXTRA_DIST += sys_types.in.h
+
+## end gnulib module sys_types
+
+## begin gnulib module unistd
+
+BUILT_SOURCES += unistd.h
+libgnu_a_SOURCES += unistd.c
+
+# We need the following in order to create an empty placeholder for
+# when the system doesn't have one.
+unistd.h: unistd.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNULL_H) $(WARN_ON_USE_H)
+ $(gl_V_at)$(SED_HEADER_STDOUT) \
+ -e 's|@''GUARD_PREFIX''@|GL|g' \
+ -e 's|@''HAVE_UNISTD_H''@|$(HAVE_UNISTD_H)|g' \
+ -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+ -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+ -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+ -e 's|@''NEXT_UNISTD_H''@|$(NEXT_UNISTD_H)|g' \
+ -e 's|@''WINDOWS_64_BIT_OFF_T''@|$(WINDOWS_64_BIT_OFF_T)|g' \
+ -e 's/@''GNULIB_ACCESS''@/$(GL_GNULIB_ACCESS)/g' \
+ -e 's/@''GNULIB_CHDIR''@/$(GL_GNULIB_CHDIR)/g' \
+ -e 's/@''GNULIB_CHOWN''@/$(GL_GNULIB_CHOWN)/g' \
+ -e 's/@''GNULIB_CLOSE''@/$(GL_GNULIB_CLOSE)/g' \
+ -e 's/@''GNULIB_COPY_FILE_RANGE''@/$(GL_GNULIB_COPY_FILE_RANGE)/g' \
+ -e 's/@''GNULIB_DUP''@/$(GL_GNULIB_DUP)/g' \
+ -e 's/@''GNULIB_DUP2''@/$(GL_GNULIB_DUP2)/g' \
+ -e 's/@''GNULIB_DUP3''@/$(GL_GNULIB_DUP3)/g' \
+ -e 's/@''GNULIB_ENVIRON''@/$(GL_GNULIB_ENVIRON)/g' \
+ -e 's/@''GNULIB_EUIDACCESS''@/$(GL_GNULIB_EUIDACCESS)/g' \
+ -e 's/@''GNULIB_EXECL''@/$(GL_GNULIB_EXECL)/g' \
+ -e 's/@''GNULIB_EXECLE''@/$(GL_GNULIB_EXECLE)/g' \
+ -e 's/@''GNULIB_EXECLP''@/$(GL_GNULIB_EXECLP)/g' \
+ -e 's/@''GNULIB_EXECV''@/$(GL_GNULIB_EXECV)/g' \
+ -e 's/@''GNULIB_EXECVE''@/$(GL_GNULIB_EXECVE)/g' \
+ -e 's/@''GNULIB_EXECVP''@/$(GL_GNULIB_EXECVP)/g' \
+ -e 's/@''GNULIB_EXECVPE''@/$(GL_GNULIB_EXECVPE)/g' \
+ -e 's/@''GNULIB_FACCESSAT''@/$(GL_GNULIB_FACCESSAT)/g' \
+ -e 's/@''GNULIB_FCHDIR''@/$(GL_GNULIB_FCHDIR)/g' \
+ -e 's/@''GNULIB_FCHOWNAT''@/$(GL_GNULIB_FCHOWNAT)/g' \
+ -e 's/@''GNULIB_FDATASYNC''@/$(GL_GNULIB_FDATASYNC)/g' \
+ -e 's/@''GNULIB_FSYNC''@/$(GL_GNULIB_FSYNC)/g' \
+ -e 's/@''GNULIB_FTRUNCATE''@/$(GL_GNULIB_FTRUNCATE)/g' \
+ -e 's/@''GNULIB_GETCWD''@/$(GL_GNULIB_GETCWD)/g' \
+ -e 's/@''GNULIB_GETDOMAINNAME''@/$(GL_GNULIB_GETDOMAINNAME)/g' \
+ -e 's/@''GNULIB_GETDTABLESIZE''@/$(GL_GNULIB_GETDTABLESIZE)/g' \
+ -e 's/@''GNULIB_GETENTROPY''@/$(GL_GNULIB_GETENTROPY)/g' \
+ -e 's/@''GNULIB_GETGROUPS''@/$(GL_GNULIB_GETGROUPS)/g' \
+ -e 's/@''GNULIB_GETHOSTNAME''@/$(GL_GNULIB_GETHOSTNAME)/g' \
+ -e 's/@''GNULIB_GETLOGIN''@/$(GL_GNULIB_GETLOGIN)/g' \
+ -e 's/@''GNULIB_GETLOGIN_R''@/$(GL_GNULIB_GETLOGIN_R)/g' \
+ -e 's/@''GNULIB_GETOPT_POSIX''@/$(GL_GNULIB_GETOPT_POSIX)/g' \
+ -e 's/@''GNULIB_GETPAGESIZE''@/$(GL_GNULIB_GETPAGESIZE)/g' \
+ -e 's/@''GNULIB_GETPASS''@/$(GL_GNULIB_GETPASS)/g' \
+ -e 's/@''GNULIB_GETPASS_GNU''@/$(GL_GNULIB_GETPASS_GNU)/g' \
+ -e 's/@''GNULIB_GETUSERSHELL''@/$(GL_GNULIB_GETUSERSHELL)/g' \
+ -e 's/@''GNULIB_GROUP_MEMBER''@/$(GL_GNULIB_GROUP_MEMBER)/g' \
+ -e 's/@''GNULIB_ISATTY''@/$(GL_GNULIB_ISATTY)/g' \
+ -e 's/@''GNULIB_LCHOWN''@/$(GL_GNULIB_LCHOWN)/g' \
+ -e 's/@''GNULIB_LINK''@/$(GL_GNULIB_LINK)/g' \
+ -e 's/@''GNULIB_LINKAT''@/$(GL_GNULIB_LINKAT)/g' \
+ -e 's/@''GNULIB_LSEEK''@/$(GL_GNULIB_LSEEK)/g' \
+ -e 's/@''GNULIB_PIPE''@/$(GL_GNULIB_PIPE)/g' \
+ -e 's/@''GNULIB_PIPE2''@/$(GL_GNULIB_PIPE2)/g' \
+ -e 's/@''GNULIB_PREAD''@/$(GL_GNULIB_PREAD)/g' \
+ -e 's/@''GNULIB_PWRITE''@/$(GL_GNULIB_PWRITE)/g' \
+ -e 's/@''GNULIB_READ''@/$(GL_GNULIB_READ)/g' \
+ -e 's/@''GNULIB_READLINK''@/$(GL_GNULIB_READLINK)/g' \
+ -e 's/@''GNULIB_READLINKAT''@/$(GL_GNULIB_READLINKAT)/g' \
+ -e 's/@''GNULIB_RMDIR''@/$(GL_GNULIB_RMDIR)/g' \
+ -e 's/@''GNULIB_SETHOSTNAME''@/$(GL_GNULIB_SETHOSTNAME)/g' \
+ -e 's/@''GNULIB_SLEEP''@/$(GL_GNULIB_SLEEP)/g' \
+ -e 's/@''GNULIB_SYMLINK''@/$(GL_GNULIB_SYMLINK)/g' \
+ -e 's/@''GNULIB_SYMLINKAT''@/$(GL_GNULIB_SYMLINKAT)/g' \
+ -e 's/@''GNULIB_TRUNCATE''@/$(GL_GNULIB_TRUNCATE)/g' \
+ -e 's/@''GNULIB_TTYNAME_R''@/$(GL_GNULIB_TTYNAME_R)/g' \
+ -e 's/@''GNULIB_UNISTD_H_GETOPT''@/0$(GL_GNULIB_UNISTD_H_GETOPT)/g' \
+ -e 's/@''GNULIB_UNISTD_H_NONBLOCKING''@/$(GL_GNULIB_UNISTD_H_NONBLOCKING)/g' \
+ -e 's/@''GNULIB_UNISTD_H_SIGPIPE''@/$(GL_GNULIB_UNISTD_H_SIGPIPE)/g' \
+ -e 's/@''GNULIB_UNLINK''@/$(GL_GNULIB_UNLINK)/g' \
+ -e 's/@''GNULIB_UNLINKAT''@/$(GL_GNULIB_UNLINKAT)/g' \
+ -e 's/@''GNULIB_USLEEP''@/$(GL_GNULIB_USLEEP)/g' \
+ -e 's/@''GNULIB_WRITE''@/$(GL_GNULIB_WRITE)/g' \
+ -e 's/@''GNULIB_MDA_ACCESS''@/$(GL_GNULIB_MDA_ACCESS)/g' \
+ -e 's/@''GNULIB_MDA_CHDIR''@/$(GL_GNULIB_MDA_CHDIR)/g' \
+ -e 's/@''GNULIB_MDA_CLOSE''@/$(GL_GNULIB_MDA_CLOSE)/g' \
+ -e 's/@''GNULIB_MDA_DUP''@/$(GL_GNULIB_MDA_DUP)/g' \
+ -e 's/@''GNULIB_MDA_DUP2''@/$(GL_GNULIB_MDA_DUP2)/g' \
+ -e 's/@''GNULIB_MDA_EXECL''@/$(GL_GNULIB_MDA_EXECL)/g' \
+ -e 's/@''GNULIB_MDA_EXECLE''@/$(GL_GNULIB_MDA_EXECLE)/g' \
+ -e 's/@''GNULIB_MDA_EXECLP''@/$(GL_GNULIB_MDA_EXECLP)/g' \
+ -e 's/@''GNULIB_MDA_EXECV''@/$(GL_GNULIB_MDA_EXECV)/g' \
+ -e 's/@''GNULIB_MDA_EXECVE''@/$(GL_GNULIB_MDA_EXECVE)/g' \
+ -e 's/@''GNULIB_MDA_EXECVP''@/$(GL_GNULIB_MDA_EXECVP)/g' \
+ -e 's/@''GNULIB_MDA_EXECVPE''@/$(GL_GNULIB_MDA_EXECVPE)/g' \
+ -e 's/@''GNULIB_MDA_GETCWD''@/$(GL_GNULIB_MDA_GETCWD)/g' \
+ -e 's/@''GNULIB_MDA_GETPID''@/$(GL_GNULIB_MDA_GETPID)/g' \
+ -e 's/@''GNULIB_MDA_ISATTY''@/$(GL_GNULIB_MDA_ISATTY)/g' \
+ -e 's/@''GNULIB_MDA_LSEEK''@/$(GL_GNULIB_MDA_LSEEK)/g' \
+ -e 's/@''GNULIB_MDA_READ''@/$(GL_GNULIB_MDA_READ)/g' \
+ -e 's/@''GNULIB_MDA_RMDIR''@/$(GL_GNULIB_MDA_RMDIR)/g' \
+ -e 's/@''GNULIB_MDA_SWAB''@/$(GL_GNULIB_MDA_SWAB)/g' \
+ -e 's/@''GNULIB_MDA_UNLINK''@/$(GL_GNULIB_MDA_UNLINK)/g' \
+ -e 's/@''GNULIB_MDA_WRITE''@/$(GL_GNULIB_MDA_WRITE)/g' \
+ < $(srcdir)/unistd.in.h | \
+ sed -e 's|@''HAVE_CHOWN''@|$(HAVE_CHOWN)|g' \
+ -e 's|@''HAVE_COPY_FILE_RANGE''@|$(HAVE_COPY_FILE_RANGE)|g' \
+ -e 's|@''HAVE_DUP3''@|$(HAVE_DUP3)|g' \
+ -e 's|@''HAVE_EUIDACCESS''@|$(HAVE_EUIDACCESS)|g' \
+ -e 's|@''HAVE_EXECVPE''@|$(HAVE_EXECVPE)|g' \
+ -e 's|@''HAVE_FACCESSAT''@|$(HAVE_FACCESSAT)|g' \
+ -e 's|@''HAVE_FCHDIR''@|$(HAVE_FCHDIR)|g' \
+ -e 's|@''HAVE_FCHOWNAT''@|$(HAVE_FCHOWNAT)|g' \
+ -e 's|@''HAVE_FDATASYNC''@|$(HAVE_FDATASYNC)|g' \
+ -e 's|@''HAVE_FSYNC''@|$(HAVE_FSYNC)|g' \
+ -e 's|@''HAVE_FTRUNCATE''@|$(HAVE_FTRUNCATE)|g' \
+ -e 's|@''HAVE_GETDTABLESIZE''@|$(HAVE_GETDTABLESIZE)|g' \
+ -e 's|@''HAVE_GETENTROPY''@|$(HAVE_GETENTROPY)|g' \
+ -e 's|@''HAVE_GETGROUPS''@|$(HAVE_GETGROUPS)|g' \
+ -e 's|@''HAVE_GETHOSTNAME''@|$(HAVE_GETHOSTNAME)|g' \
+ -e 's|@''HAVE_GETPAGESIZE''@|$(HAVE_GETPAGESIZE)|g' \
+ -e 's|@''HAVE_GETPASS''@|$(HAVE_GETPASS)|g' \
+ -e 's|@''HAVE_GROUP_MEMBER''@|$(HAVE_GROUP_MEMBER)|g' \
+ -e 's|@''HAVE_LCHOWN''@|$(HAVE_LCHOWN)|g' \
+ -e 's|@''HAVE_LINK''@|$(HAVE_LINK)|g' \
+ -e 's|@''HAVE_LINKAT''@|$(HAVE_LINKAT)|g' \
+ -e 's|@''HAVE_PIPE''@|$(HAVE_PIPE)|g' \
+ -e 's|@''HAVE_PIPE2''@|$(HAVE_PIPE2)|g' \
+ -e 's|@''HAVE_PREAD''@|$(HAVE_PREAD)|g' \
+ -e 's|@''HAVE_PWRITE''@|$(HAVE_PWRITE)|g' \
+ -e 's|@''HAVE_READLINK''@|$(HAVE_READLINK)|g' \
+ -e 's|@''HAVE_READLINKAT''@|$(HAVE_READLINKAT)|g' \
+ -e 's|@''HAVE_SETHOSTNAME''@|$(HAVE_SETHOSTNAME)|g' \
+ -e 's|@''HAVE_SLEEP''@|$(HAVE_SLEEP)|g' \
+ -e 's|@''HAVE_SYMLINK''@|$(HAVE_SYMLINK)|g' \
+ -e 's|@''HAVE_SYMLINKAT''@|$(HAVE_SYMLINKAT)|g' \
+ -e 's|@''HAVE_UNLINKAT''@|$(HAVE_UNLINKAT)|g' \
+ -e 's|@''HAVE_USLEEP''@|$(HAVE_USLEEP)|g' \
+ -e 's|@''HAVE_DECL_ENVIRON''@|$(HAVE_DECL_ENVIRON)|g' \
+ -e 's|@''HAVE_DECL_EXECVPE''@|$(HAVE_DECL_EXECVPE)|g' \
+ -e 's|@''HAVE_DECL_FCHDIR''@|$(HAVE_DECL_FCHDIR)|g' \
+ -e 's|@''HAVE_DECL_FDATASYNC''@|$(HAVE_DECL_FDATASYNC)|g' \
+ -e 's|@''HAVE_DECL_GETDOMAINNAME''@|$(HAVE_DECL_GETDOMAINNAME)|g' \
+ -e 's|@''HAVE_DECL_GETLOGIN''@|$(HAVE_DECL_GETLOGIN)|g' \
+ -e 's|@''HAVE_DECL_GETLOGIN_R''@|$(HAVE_DECL_GETLOGIN_R)|g' \
+ -e 's|@''HAVE_DECL_GETPAGESIZE''@|$(HAVE_DECL_GETPAGESIZE)|g' \
+ -e 's|@''HAVE_DECL_GETUSERSHELL''@|$(HAVE_DECL_GETUSERSHELL)|g' \
+ -e 's|@''HAVE_DECL_SETHOSTNAME''@|$(HAVE_DECL_SETHOSTNAME)|g' \
+ -e 's|@''HAVE_DECL_TRUNCATE''@|$(HAVE_DECL_TRUNCATE)|g' \
+ -e 's|@''HAVE_DECL_TTYNAME_R''@|$(HAVE_DECL_TTYNAME_R)|g' \
+ -e 's|@''HAVE_OS_H''@|$(HAVE_OS_H)|g' \
+ -e 's|@''HAVE_SYS_PARAM_H''@|$(HAVE_SYS_PARAM_H)|g' \
+ | \
+ sed -e 's|@''REPLACE_ACCESS''@|$(REPLACE_ACCESS)|g' \
+ -e 's|@''REPLACE_CHOWN''@|$(REPLACE_CHOWN)|g' \
+ -e 's|@''REPLACE_CLOSE''@|$(REPLACE_CLOSE)|g' \
+ -e 's|@''REPLACE_COPY_FILE_RANGE''@|$(REPLACE_COPY_FILE_RANGE)|g' \
+ -e 's|@''REPLACE_DUP''@|$(REPLACE_DUP)|g' \
+ -e 's|@''REPLACE_DUP2''@|$(REPLACE_DUP2)|g' \
+ -e 's|@''REPLACE_DUP3''@|$(REPLACE_DUP3)|g' \
+ -e 's|@''REPLACE_EXECL''@|$(REPLACE_EXECL)|g' \
+ -e 's|@''REPLACE_EXECLE''@|$(REPLACE_EXECLE)|g' \
+ -e 's|@''REPLACE_EXECLP''@|$(REPLACE_EXECLP)|g' \
+ -e 's|@''REPLACE_EXECV''@|$(REPLACE_EXECV)|g' \
+ -e 's|@''REPLACE_EXECVE''@|$(REPLACE_EXECVE)|g' \
+ -e 's|@''REPLACE_EXECVP''@|$(REPLACE_EXECVP)|g' \
+ -e 's|@''REPLACE_EXECVPE''@|$(REPLACE_EXECVPE)|g' \
+ -e 's|@''REPLACE_FACCESSAT''@|$(REPLACE_FACCESSAT)|g' \
+ -e 's|@''REPLACE_FCHOWNAT''@|$(REPLACE_FCHOWNAT)|g' \
+ -e 's|@''REPLACE_FDATASYNC''@|$(REPLACE_FDATASYNC)|g' \
+ -e 's|@''REPLACE_FTRUNCATE''@|$(REPLACE_FTRUNCATE)|g' \
+ -e 's|@''REPLACE_GETCWD''@|$(REPLACE_GETCWD)|g' \
+ -e 's|@''REPLACE_GETDOMAINNAME''@|$(REPLACE_GETDOMAINNAME)|g' \
+ -e 's|@''REPLACE_GETDTABLESIZE''@|$(REPLACE_GETDTABLESIZE)|g' \
+ -e 's|@''REPLACE_GETENTROPY''@|$(REPLACE_GETENTROPY)|g' \
+ -e 's|@''REPLACE_GETLOGIN_R''@|$(REPLACE_GETLOGIN_R)|g' \
+ -e 's|@''REPLACE_GETGROUPS''@|$(REPLACE_GETGROUPS)|g' \
+ -e 's|@''REPLACE_GETPAGESIZE''@|$(REPLACE_GETPAGESIZE)|g' \
+ -e 's|@''REPLACE_GETPASS''@|$(REPLACE_GETPASS)|g' \
+ -e 's|@''REPLACE_GETPASS_FOR_GETPASS_GNU''@|$(REPLACE_GETPASS_FOR_GETPASS_GNU)|g' \
+ -e 's|@''REPLACE_ISATTY''@|$(REPLACE_ISATTY)|g' \
+ -e 's|@''REPLACE_LCHOWN''@|$(REPLACE_LCHOWN)|g' \
+ -e 's|@''REPLACE_LINK''@|$(REPLACE_LINK)|g' \
+ -e 's|@''REPLACE_LINKAT''@|$(REPLACE_LINKAT)|g' \
+ -e 's|@''REPLACE_LSEEK''@|$(REPLACE_LSEEK)|g' \
+ -e 's|@''REPLACE_PIPE2''@|$(REPLACE_PIPE2)|g' \
+ -e 's|@''REPLACE_PREAD''@|$(REPLACE_PREAD)|g' \
+ -e 's|@''REPLACE_PWRITE''@|$(REPLACE_PWRITE)|g' \
+ -e 's|@''REPLACE_READ''@|$(REPLACE_READ)|g' \
+ -e 's|@''REPLACE_READLINK''@|$(REPLACE_READLINK)|g' \
+ -e 's|@''REPLACE_READLINKAT''@|$(REPLACE_READLINKAT)|g' \
+ -e 's|@''REPLACE_RMDIR''@|$(REPLACE_RMDIR)|g' \
+ -e 's|@''REPLACE_SETHOSTNAME''@|$(REPLACE_SETHOSTNAME)|g' \
+ -e 's|@''REPLACE_SLEEP''@|$(REPLACE_SLEEP)|g' \
+ -e 's|@''REPLACE_SYMLINK''@|$(REPLACE_SYMLINK)|g' \
+ -e 's|@''REPLACE_SYMLINKAT''@|$(REPLACE_SYMLINKAT)|g' \
+ -e 's|@''REPLACE_TRUNCATE''@|$(REPLACE_TRUNCATE)|g' \
+ -e 's|@''REPLACE_TTYNAME_R''@|$(REPLACE_TTYNAME_R)|g' \
+ -e 's|@''REPLACE_UNLINK''@|$(REPLACE_UNLINK)|g' \
+ -e 's|@''REPLACE_UNLINKAT''@|$(REPLACE_UNLINKAT)|g' \
+ -e 's|@''REPLACE_USLEEP''@|$(REPLACE_USLEEP)|g' \
+ -e 's|@''REPLACE_WRITE''@|$(REPLACE_WRITE)|g' \
+ -e 's|@''UNISTD_H_HAVE_SYS_RANDOM_H''@|$(UNISTD_H_HAVE_SYS_RANDOM_H)|g' \
+ -e 's|@''UNISTD_H_HAVE_WINSOCK2_H''@|$(UNISTD_H_HAVE_WINSOCK2_H)|g' \
+ -e 's|@''UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS''@|$(UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS)|g' \
+ -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
+ -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
+ -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)' \
+ > $@-t
+ $(AM_V_at)mv $@-t $@
+MOSTLYCLEANFILES += unistd.h unistd.h-t
+
+EXTRA_DIST += unistd.in.h
+
+## end gnulib module unistd
+
+
+mostlyclean-local: mostlyclean-generic
+ @for dir in '' $(MOSTLYCLEANDIRS); do \
+ if test -n "$$dir" && test -d $$dir; then \
+ echo "rmdir $$dir"; rmdir $$dir; \
+ fi; \
+ done; \
+ :
+distclean-local: distclean-gnulib-libobjs
+distclean-gnulib-libobjs:
+ -rm -f @gl_LIBOBJDEPS@
+maintainer-clean-local: distclean-gnulib-libobjs
diff --git a/gnulib/arg-nonnull.h b/gnulib/arg-nonnull.h
new file mode 100644
index 0000000..9498ae1
--- /dev/null
+++ b/gnulib/arg-nonnull.h
@@ -0,0 +1,26 @@
+/* A C macro for declaring that specific arguments must not be NULL.
+ Copyright (C) 2009-2023 Free Software Foundation, Inc.
+
+ This program is free software: you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published
+ by the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with this program. If not, see . */
+
+/* _GL_ARG_NONNULL((n,...,m)) tells the compiler and static analyzer tools
+ that the values passed as arguments n, ..., m must be non-NULL pointers.
+ n = 1 stands for the first argument, n = 2 for the second argument etc. */
+#ifndef _GL_ARG_NONNULL
+# if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 3) || defined __clang__
+# define _GL_ARG_NONNULL(params) __attribute__ ((__nonnull__ params))
+# else
+# define _GL_ARG_NONNULL(params)
+# endif
+#endif
diff --git a/gnulib/c++defs.h b/gnulib/c++defs.h
new file mode 100644
index 0000000..8ad4695
--- /dev/null
+++ b/gnulib/c++defs.h
@@ -0,0 +1,331 @@
+/* C++ compatible function declaration macros.
+ Copyright (C) 2010-2023 Free Software Foundation, Inc.
+
+ This program is free software: you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published
+ by the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with this program. If not, see . */
+
+#ifndef _GL_CXXDEFS_H
+#define _GL_CXXDEFS_H
+
+/* Begin/end the GNULIB_NAMESPACE namespace. */
+#if defined __cplusplus && defined GNULIB_NAMESPACE
+# define _GL_BEGIN_NAMESPACE namespace GNULIB_NAMESPACE {
+# define _GL_END_NAMESPACE }
+#else
+# define _GL_BEGIN_NAMESPACE
+# define _GL_END_NAMESPACE
+#endif
+
+/* The three most frequent use cases of these macros are:
+
+ * For providing a substitute for a function that is missing on some
+ platforms, but is declared and works fine on the platforms on which
+ it exists:
+
+ #if @GNULIB_FOO@
+ # if !@HAVE_FOO@
+ _GL_FUNCDECL_SYS (foo, ...);
+ # endif
+ _GL_CXXALIAS_SYS (foo, ...);
+ _GL_CXXALIASWARN (foo);
+ #elif defined GNULIB_POSIXCHECK
+ ...
+ #endif
+
+ * For providing a replacement for a function that exists on all platforms,
+ but is broken/insufficient and needs to be replaced on some platforms:
+
+ #if @GNULIB_FOO@
+ # if @REPLACE_FOO@
+ # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+ # undef foo
+ # define foo rpl_foo
+ # endif
+ _GL_FUNCDECL_RPL (foo, ...);
+ _GL_CXXALIAS_RPL (foo, ...);
+ # else
+ _GL_CXXALIAS_SYS (foo, ...);
+ # endif
+ _GL_CXXALIASWARN (foo);
+ #elif defined GNULIB_POSIXCHECK
+ ...
+ #endif
+
+ * For providing a replacement for a function that exists on some platforms
+ but is broken/insufficient and needs to be replaced on some of them and
+ is additionally either missing or undeclared on some other platforms:
+
+ #if @GNULIB_FOO@
+ # if @REPLACE_FOO@
+ # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+ # undef foo
+ # define foo rpl_foo
+ # endif
+ _GL_FUNCDECL_RPL (foo, ...);
+ _GL_CXXALIAS_RPL (foo, ...);
+ # else
+ # if !@HAVE_FOO@ or if !@HAVE_DECL_FOO@
+ _GL_FUNCDECL_SYS (foo, ...);
+ # endif
+ _GL_CXXALIAS_SYS (foo, ...);
+ # endif
+ _GL_CXXALIASWARN (foo);
+ #elif defined GNULIB_POSIXCHECK
+ ...
+ #endif
+*/
+
+/* _GL_EXTERN_C declaration;
+ performs the declaration with C linkage. */
+#if defined __cplusplus
+# define _GL_EXTERN_C extern "C"
+#else
+# define _GL_EXTERN_C extern
+#endif
+
+/* _GL_FUNCDECL_RPL (func, rettype, parameters_and_attributes);
+ declares a replacement function, named rpl_func, with the given prototype,
+ consisting of return type, parameters, and attributes.
+ Example:
+ _GL_FUNCDECL_RPL (open, int, (const char *filename, int flags, ...)
+ _GL_ARG_NONNULL ((1)));
+ */
+#define _GL_FUNCDECL_RPL(func,rettype,parameters_and_attributes) \
+ _GL_FUNCDECL_RPL_1 (rpl_##func, rettype, parameters_and_attributes)
+#define _GL_FUNCDECL_RPL_1(rpl_func,rettype,parameters_and_attributes) \
+ _GL_EXTERN_C rettype rpl_func parameters_and_attributes
+
+/* _GL_FUNCDECL_SYS (func, rettype, parameters_and_attributes);
+ declares the system function, named func, with the given prototype,
+ consisting of return type, parameters, and attributes.
+ Example:
+ _GL_FUNCDECL_SYS (open, int, (const char *filename, int flags, ...)
+ _GL_ARG_NONNULL ((1)));
+ */
+#define _GL_FUNCDECL_SYS(func,rettype,parameters_and_attributes) \
+ _GL_EXTERN_C rettype func parameters_and_attributes
+
+/* _GL_CXXALIAS_RPL (func, rettype, parameters);
+ declares a C++ alias called GNULIB_NAMESPACE::func
+ that redirects to rpl_func, if GNULIB_NAMESPACE is defined.
+ Example:
+ _GL_CXXALIAS_RPL (open, int, (const char *filename, int flags, ...));
+
+ Wrapping rpl_func in an object with an inline conversion operator
+ avoids a reference to rpl_func unless GNULIB_NAMESPACE::func is
+ actually used in the program. */
+#define _GL_CXXALIAS_RPL(func,rettype,parameters) \
+ _GL_CXXALIAS_RPL_1 (func, rpl_##func, rettype, parameters)
+#if defined __cplusplus && defined GNULIB_NAMESPACE
+# define _GL_CXXALIAS_RPL_1(func,rpl_func,rettype,parameters) \
+ namespace GNULIB_NAMESPACE \
+ { \
+ static const struct _gl_ ## func ## _wrapper \
+ { \
+ typedef rettype (*type) parameters; \
+ \
+ inline operator type () const \
+ { \
+ return ::rpl_func; \
+ } \
+ } func = {}; \
+ } \
+ _GL_EXTERN_C int _gl_cxxalias_dummy
+#else
+# define _GL_CXXALIAS_RPL_1(func,rpl_func,rettype,parameters) \
+ _GL_EXTERN_C int _gl_cxxalias_dummy
+#endif
+
+/* _GL_CXXALIAS_MDA (func, rettype, parameters);
+ is to be used when func is a Microsoft deprecated alias, on native Windows.
+ It declares a C++ alias called GNULIB_NAMESPACE::func
+ that redirects to _func, if GNULIB_NAMESPACE is defined.
+ Example:
+ _GL_CXXALIAS_MDA (open, int, (const char *filename, int flags, ...));
+ */
+#define _GL_CXXALIAS_MDA(func,rettype,parameters) \
+ _GL_CXXALIAS_RPL_1 (func, _##func, rettype, parameters)
+
+/* _GL_CXXALIAS_RPL_CAST_1 (func, rpl_func, rettype, parameters);
+ is like _GL_CXXALIAS_RPL_1 (func, rpl_func, rettype, parameters);
+ except that the C function rpl_func may have a slightly different
+ declaration. A cast is used to silence the "invalid conversion" error
+ that would otherwise occur. */
+#if defined __cplusplus && defined GNULIB_NAMESPACE
+# define _GL_CXXALIAS_RPL_CAST_1(func,rpl_func,rettype,parameters) \
+ namespace GNULIB_NAMESPACE \
+ { \
+ static const struct _gl_ ## func ## _wrapper \
+ { \
+ typedef rettype (*type) parameters; \
+ \
+ inline operator type () const \
+ { \
+ return reinterpret_cast(::rpl_func); \
+ } \
+ } func = {}; \
+ } \
+ _GL_EXTERN_C int _gl_cxxalias_dummy
+#else
+# define _GL_CXXALIAS_RPL_CAST_1(func,rpl_func,rettype,parameters) \
+ _GL_EXTERN_C int _gl_cxxalias_dummy
+#endif
+
+/* _GL_CXXALIAS_MDA_CAST (func, rettype, parameters);
+ is like _GL_CXXALIAS_MDA (func, rettype, parameters);
+ except that the C function func may have a slightly different declaration.
+ A cast is used to silence the "invalid conversion" error that would
+ otherwise occur. */
+#define _GL_CXXALIAS_MDA_CAST(func,rettype,parameters) \
+ _GL_CXXALIAS_RPL_CAST_1 (func, _##func, rettype, parameters)
+
+/* _GL_CXXALIAS_SYS (func, rettype, parameters);
+ declares a C++ alias called GNULIB_NAMESPACE::func
+ that redirects to the system provided function func, if GNULIB_NAMESPACE
+ is defined.
+ Example:
+ _GL_CXXALIAS_SYS (open, int, (const char *filename, int flags, ...));
+
+ Wrapping func in an object with an inline conversion operator
+ avoids a reference to func unless GNULIB_NAMESPACE::func is
+ actually used in the program. */
+#if defined __cplusplus && defined GNULIB_NAMESPACE
+# define _GL_CXXALIAS_SYS(func,rettype,parameters) \
+ namespace GNULIB_NAMESPACE \
+ { \
+ static const struct _gl_ ## func ## _wrapper \
+ { \
+ typedef rettype (*type) parameters; \
+ \
+ inline operator type () const \
+ { \
+ return ::func; \
+ } \
+ } func = {}; \
+ } \
+ _GL_EXTERN_C int _gl_cxxalias_dummy
+#else
+# define _GL_CXXALIAS_SYS(func,rettype,parameters) \
+ _GL_EXTERN_C int _gl_cxxalias_dummy
+#endif
+
+/* _GL_CXXALIAS_SYS_CAST (func, rettype, parameters);
+ is like _GL_CXXALIAS_SYS (func, rettype, parameters);
+ except that the C function func may have a slightly different declaration.
+ A cast is used to silence the "invalid conversion" error that would
+ otherwise occur. */
+#if defined __cplusplus && defined GNULIB_NAMESPACE
+# define _GL_CXXALIAS_SYS_CAST(func,rettype,parameters) \
+ namespace GNULIB_NAMESPACE \
+ { \
+ static const struct _gl_ ## func ## _wrapper \
+ { \
+ typedef rettype (*type) parameters; \
+ \
+ inline operator type () const \
+ { \
+ return reinterpret_cast(::func); \
+ } \
+ } func = {}; \
+ } \
+ _GL_EXTERN_C int _gl_cxxalias_dummy
+#else
+# define _GL_CXXALIAS_SYS_CAST(func,rettype,parameters) \
+ _GL_EXTERN_C int _gl_cxxalias_dummy
+#endif
+
+/* _GL_CXXALIAS_SYS_CAST2 (func, rettype, parameters, rettype2, parameters2);
+ is like _GL_CXXALIAS_SYS (func, rettype, parameters);
+ except that the C function is picked among a set of overloaded functions,
+ namely the one with rettype2 and parameters2. Two consecutive casts
+ are used to silence the "cannot find a match" and "invalid conversion"
+ errors that would otherwise occur. */
+#if defined __cplusplus && defined GNULIB_NAMESPACE
+ /* The outer cast must be a reinterpret_cast.
+ The inner cast: When the function is defined as a set of overloaded
+ functions, it works as a static_cast<>, choosing the designated variant.
+ When the function is defined as a single variant, it works as a
+ reinterpret_cast<>. The parenthesized cast syntax works both ways. */
+# define _GL_CXXALIAS_SYS_CAST2(func,rettype,parameters,rettype2,parameters2) \
+ namespace GNULIB_NAMESPACE \
+ { \
+ static const struct _gl_ ## func ## _wrapper \
+ { \
+ typedef rettype (*type) parameters; \
+ \
+ inline operator type () const \
+ { \
+ return reinterpret_cast((rettype2 (*) parameters2)(::func)); \
+ } \
+ } func = {}; \
+ } \
+ _GL_EXTERN_C int _gl_cxxalias_dummy
+#else
+# define _GL_CXXALIAS_SYS_CAST2(func,rettype,parameters,rettype2,parameters2) \
+ _GL_EXTERN_C int _gl_cxxalias_dummy
+#endif
+
+/* _GL_CXXALIASWARN (func);
+ causes a warning to be emitted when ::func is used but not when
+ GNULIB_NAMESPACE::func is used. func must be defined without overloaded
+ variants. */
+#if defined __cplusplus && defined GNULIB_NAMESPACE
+# define _GL_CXXALIASWARN(func) \
+ _GL_CXXALIASWARN_1 (func, GNULIB_NAMESPACE)
+# define _GL_CXXALIASWARN_1(func,namespace) \
+ _GL_CXXALIASWARN_2 (func, namespace)
+/* To work around GCC bug ,
+ we enable the warning only when not optimizing. */
+# if !(defined __GNUC__ && !defined __clang__ && __OPTIMIZE__)
+# define _GL_CXXALIASWARN_2(func,namespace) \
+ _GL_WARN_ON_USE (func, \
+ "The symbol ::" #func " refers to the system function. " \
+ "Use " #namespace "::" #func " instead.")
+# elif __GNUC__ >= 3 && GNULIB_STRICT_CHECKING
+# define _GL_CXXALIASWARN_2(func,namespace) \
+ extern __typeof__ (func) func
+# else
+# define _GL_CXXALIASWARN_2(func,namespace) \
+ _GL_EXTERN_C int _gl_cxxalias_dummy
+# endif
+#else
+# define _GL_CXXALIASWARN(func) \
+ _GL_EXTERN_C int _gl_cxxalias_dummy
+#endif
+
+/* _GL_CXXALIASWARN1 (func, rettype, parameters_and_attributes);
+ causes a warning to be emitted when the given overloaded variant of ::func
+ is used but not when GNULIB_NAMESPACE::func is used. */
+#if defined __cplusplus && defined GNULIB_NAMESPACE
+# define _GL_CXXALIASWARN1(func,rettype,parameters_and_attributes) \
+ _GL_CXXALIASWARN1_1 (func, rettype, parameters_and_attributes, \
+ GNULIB_NAMESPACE)
+# define _GL_CXXALIASWARN1_1(func,rettype,parameters_and_attributes,namespace) \
+ _GL_CXXALIASWARN1_2 (func, rettype, parameters_and_attributes, namespace)
+/* To work around GCC bug ,
+ we enable the warning only when not optimizing. */
+# if !(defined __GNUC__ && !defined __clang__ && __OPTIMIZE__)
+# define _GL_CXXALIASWARN1_2(func,rettype,parameters_and_attributes,namespace) \
+ _GL_WARN_ON_USE_CXX (func, rettype, rettype, parameters_and_attributes, \
+ "The symbol ::" #func " refers to the system function. " \
+ "Use " #namespace "::" #func " instead.")
+# else
+# define _GL_CXXALIASWARN1_2(func,rettype,parameters_and_attributes,namespace) \
+ _GL_EXTERN_C int _gl_cxxalias_dummy
+# endif
+#else
+# define _GL_CXXALIASWARN1(func,rettype,parameters_and_attributes) \
+ _GL_EXTERN_C int _gl_cxxalias_dummy
+#endif
+
+#endif /* _GL_CXXDEFS_H */
diff --git a/gnulib/getopt-cdefs.in.h b/gnulib/getopt-cdefs.in.h
new file mode 100644
index 0000000..e76c78c
--- /dev/null
+++ b/gnulib/getopt-cdefs.in.h
@@ -0,0 +1,66 @@
+/* getopt-on-non-glibc compatibility macros.
+ Copyright (C) 1989-2023 Free Software Foundation, Inc.
+ This file is part of gnulib.
+ Unlike most of the getopt implementation, it is NOT shared
+ with the GNU C Library.
+
+ This file is free software: you can redistribute it and/or modify
+ it under the terms of the GNU Lesser General Public License as
+ published by the Free Software Foundation; either version 2.1 of the
+ License, or (at your option) any later version.
+
+ This file is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with this program. If not, see . */
+
+#ifndef _GETOPT_CDEFS_H
+#define _GETOPT_CDEFS_H 1
+
+/* This header should not be used directly; include getopt.h or
+ unistd.h instead. It does not have a protective #error, because
+ the guard macro for getopt.h in gnulib is not fixed. */
+
+/* getopt-core.h and getopt-ext.h are shared with GNU libc, and expect
+ a number of the internal macros supplied to GNU libc's headers by
+ sys/cdefs.h. Provide fallback definitions for all of them. */
+#if @HAVE_SYS_CDEFS_H@
+# include
+#endif
+
+#ifndef __BEGIN_DECLS
+# ifdef __cplusplus
+# define __BEGIN_DECLS extern "C" {
+# else
+# define __BEGIN_DECLS /* nothing */
+# endif
+#endif
+#ifndef __END_DECLS
+# ifdef __cplusplus
+# define __END_DECLS }
+# else
+# define __END_DECLS /* nothing */
+# endif
+#endif
+
+#ifndef __GNUC_PREREQ
+# if defined __GNUC__ && defined __GNUC_VERSION__
+# define __GNUC_PREREQ(maj, min) \
+ ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
+# else
+# define __GNUC_PREREQ(maj, min) 0
+# endif
+#endif
+
+#ifndef __THROW
+# if defined __cplusplus && (__GNUC_PREREQ (2,8) || __clang_major__ >= 4)
+# define __THROW throw ()
+# else
+# define __THROW
+# endif
+#endif
+
+#endif /* _GETOPT_CDEFS_H */
diff --git a/gnulib/getopt-core.h b/gnulib/getopt-core.h
new file mode 100644
index 0000000..c5dd493
--- /dev/null
+++ b/gnulib/getopt-core.h
@@ -0,0 +1,96 @@
+/* Declarations for getopt (basic, portable features only).
+ Copyright (C) 1989-2023 Free Software Foundation, Inc.
+ This file is part of the GNU C Library and is also part of gnulib.
+ Patches to this file should be submitted to both projects.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ . */
+
+#ifndef _GETOPT_CORE_H
+#define _GETOPT_CORE_H 1
+
+/* This header should not be used directly; include getopt.h or
+ unistd.h instead. Unlike most bits headers, it does not have
+ a protective #error, because the guard macro for getopt.h in
+ gnulib is not fixed. */
+
+__BEGIN_DECLS
+
+/* For communication from 'getopt' to the caller.
+ When 'getopt' finds an option that takes an argument,
+ the argument value is returned here.
+ Also, when 'ordering' is RETURN_IN_ORDER,
+ each non-option ARGV-element is returned here. */
+
+extern char *optarg;
+
+/* Index in ARGV of the next element to be scanned.
+ This is used for communication to and from the caller
+ and for communication between successive calls to 'getopt'.
+
+ On entry to 'getopt', zero means this is the first call; initialize.
+
+ When 'getopt' returns -1, this is the index of the first of the
+ non-option elements that the caller should itself scan.
+
+ Otherwise, 'optind' communicates from one call to the next
+ how much of ARGV has been scanned so far. */
+
+extern int optind;
+
+/* Callers store zero here to inhibit the error message 'getopt' prints
+ for unrecognized options. */
+
+extern int opterr;
+
+/* Set to an option character which was unrecognized. */
+
+extern int optopt;
+
+/* Get definitions and prototypes for functions to process the
+ arguments in ARGV (ARGC of them, minus the program name) for
+ options given in OPTS.
+
+ Return the option character from OPTS just read. Return -1 when
+ there are no more options. For unrecognized options, or options
+ missing arguments, 'optopt' is set to the option letter, and '?' is
+ returned.
+
+ The OPTS string is a list of characters which are recognized option
+ letters, optionally followed by colons, specifying that that letter
+ takes an argument, to be placed in 'optarg'.
+
+ If a letter in OPTS is followed by two colons, its argument is
+ optional. This behavior is specific to the GNU 'getopt'.
+
+ The argument '--' causes premature termination of argument
+ scanning, explicitly telling 'getopt' that there are no more
+ options.
+
+ If OPTS begins with '-', then non-option arguments are treated as
+ arguments to the option '\1'. This behavior is specific to the GNU
+ 'getopt'. If OPTS begins with '+', or POSIXLY_CORRECT is set in
+ the environment, then do not permute arguments.
+
+ For standards compliance, the 'argv' argument has the type
+ char *const *, but this is inaccurate; if argument permutation is
+ enabled, the argv array (not the strings it points to) must be
+ writable. */
+
+extern int getopt (int ___argc, char *const *___argv, const char *__shortopts)
+ __THROW _GL_ARG_NONNULL ((2, 3));
+
+__END_DECLS
+
+#endif /* _GETOPT_CORE_H */
diff --git a/gnulib/getopt-ext.h b/gnulib/getopt-ext.h
new file mode 100644
index 0000000..d37c293
--- /dev/null
+++ b/gnulib/getopt-ext.h
@@ -0,0 +1,77 @@
+/* Declarations for getopt (GNU extensions).
+ Copyright (C) 1989-2023 Free Software Foundation, Inc.
+ This file is part of the GNU C Library and is also part of gnulib.
+ Patches to this file should be submitted to both projects.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ . */
+
+#ifndef _GETOPT_EXT_H
+#define _GETOPT_EXT_H 1
+
+/* This header should not be used directly; include getopt.h instead.
+ Unlike most bits headers, it does not have a protective #error,
+ because the guard macro for getopt.h in gnulib is not fixed. */
+
+__BEGIN_DECLS
+
+/* Describe the long-named options requested by the application.
+ The LONG_OPTIONS argument to getopt_long or getopt_long_only is a vector
+ of 'struct option' terminated by an element containing a name which is
+ zero.
+
+ The field 'has_arg' is:
+ no_argument (or 0) if the option does not take an argument,
+ required_argument (or 1) if the option requires an argument,
+ optional_argument (or 2) if the option takes an optional argument.
+
+ If the field 'flag' is not NULL, it points to a variable that is set
+ to the value given in the field 'val' when the option is found, but
+ left unchanged if the option is not found.
+
+ To have a long-named option do something other than set an 'int' to
+ a compiled-in constant, such as set a value from 'optarg', set the
+ option's 'flag' field to zero and its 'val' field to a nonzero
+ value (the equivalent single-letter option character, if there is
+ one). For long options that have a zero 'flag' field, 'getopt'
+ returns the contents of the 'val' field. */
+
+struct option
+{
+ const char *name;
+ /* has_arg can't be an enum because some compilers complain about
+ type mismatches in all the code that assumes it is an int. */
+ int has_arg;
+ int *flag;
+ int val;
+};
+
+/* Names for the values of the 'has_arg' field of 'struct option'. */
+
+#define no_argument 0
+#define required_argument 1
+#define optional_argument 2
+
+extern int getopt_long (int ___argc, char *__getopt_argv_const *___argv,
+ const char *__shortopts,
+ const struct option *__longopts, int *__longind)
+ __THROW _GL_ARG_NONNULL ((2, 3));
+extern int getopt_long_only (int ___argc, char *__getopt_argv_const *___argv,
+ const char *__shortopts,
+ const struct option *__longopts, int *__longind)
+ __THROW _GL_ARG_NONNULL ((2, 3));
+
+__END_DECLS
+
+#endif /* _GETOPT_EXT_H */
diff --git a/gnulib/getopt-pfx-core.h b/gnulib/getopt-pfx-core.h
new file mode 100644
index 0000000..095e393
--- /dev/null
+++ b/gnulib/getopt-pfx-core.h
@@ -0,0 +1,66 @@
+/* getopt (basic, portable features) gnulib wrapper header.
+ Copyright (C) 1989-2023 Free Software Foundation, Inc.
+ This file is part of gnulib.
+ Unlike most of the getopt implementation, it is NOT shared
+ with the GNU C Library.
+
+ This file is free software: you can redistribute it and/or modify
+ it under the terms of the GNU Lesser General Public License as
+ published by the Free Software Foundation; either version 2.1 of the
+ License, or (at your option) any later version.
+
+ This file is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with this program. If not, see . */
+
+#ifndef _GETOPT_PFX_CORE_H
+#define _GETOPT_PFX_CORE_H 1
+
+/* This header should not be used directly; include getopt.h or
+ unistd.h instead. It does not have a protective #error, because
+ the guard macro for getopt.h in gnulib is not fixed. */
+
+/* Standalone applications should #define __GETOPT_PREFIX to an
+ identifier that prefixes the external functions and variables
+ defined in getopt-core.h and getopt-ext.h. Systematically
+ rename identifiers so that they do not collide with the system
+ functions and variables. Renaming avoids problems with some
+ compilers and linkers. */
+#ifdef __GETOPT_PREFIX
+# ifndef __GETOPT_ID
+# define __GETOPT_CONCAT(x, y) x ## y
+# define __GETOPT_XCONCAT(x, y) __GETOPT_CONCAT (x, y)
+# define __GETOPT_ID(y) __GETOPT_XCONCAT (__GETOPT_PREFIX, y)
+# endif
+# undef getopt
+# undef optarg
+# undef opterr
+# undef optind
+# undef optopt
+# define getopt __GETOPT_ID (getopt)
+# define optarg __GETOPT_ID (optarg)
+# define opterr __GETOPT_ID (opterr)
+# define optind __GETOPT_ID (optind)
+# define optopt __GETOPT_ID (optopt)
+
+/* Work around a problem on macOS, which declares getopt with a
+ trailing __DARWIN_ALIAS(getopt) that would expand to something like
+ __asm("_" "rpl_getopt" "$UNIX2003") were it not for the following
+ hack to suppress the macOS declaration . */
+# ifdef __APPLE__
+# define _GETOPT
+# endif
+
+/* The system's getopt.h may have already included getopt-core.h to
+ declare the unprefixed identifiers. Undef _GETOPT_CORE_H so that
+ getopt-core.h declares them with prefixes. */
+# undef _GETOPT_CORE_H
+#endif
+
+#include
+
+#endif /* _GETOPT_PFX_CORE_H */
diff --git a/gnulib/getopt-pfx-ext.h b/gnulib/getopt-pfx-ext.h
new file mode 100644
index 0000000..8578d72
--- /dev/null
+++ b/gnulib/getopt-pfx-ext.h
@@ -0,0 +1,70 @@
+/* getopt (GNU extensions) gnulib wrapper header.
+ Copyright (C) 1989-2023 Free Software Foundation, Inc.
+ This file is part of gnulib.
+ Unlike most of the getopt implementation, it is NOT shared
+ with the GNU C Library.
+
+ This file is free software: you can redistribute it and/or modify
+ it under the terms of the GNU Lesser General Public License as
+ published by the Free Software Foundation; either version 2.1 of the
+ License, or (at your option) any later version.
+
+ This file is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with this program. If not, see . */
+
+#ifndef _GETOPT_PFX_EXT_H
+#define _GETOPT_PFX_EXT_H 1
+
+/* This header should not be used directly; include getopt.h instead.
+ It does not have a protective #error, because the guard macro for
+ getopt.h in gnulib is not fixed. */
+
+/* Standalone applications should #define __GETOPT_PREFIX to an
+ identifier that prefixes the external functions and variables
+ defined in getopt-core.h and getopt-ext.h. Systematically
+ rename identifiers so that they do not collide with the system
+ functions and variables. Renaming avoids problems with some
+ compilers and linkers. */
+#ifdef __GETOPT_PREFIX
+# ifndef __GETOPT_ID
+# define __GETOPT_CONCAT(x, y) x ## y
+# define __GETOPT_XCONCAT(x, y) __GETOPT_CONCAT (x, y)
+# define __GETOPT_ID(y) __GETOPT_XCONCAT (__GETOPT_PREFIX, y)
+# endif
+# undef getopt_long
+# undef getopt_long_only
+# undef option
+# undef _getopt_internal
+# define getopt_long __GETOPT_ID (getopt_long)
+# define getopt_long_only __GETOPT_ID (getopt_long_only)
+# define option __GETOPT_ID (option)
+# define _getopt_internal __GETOPT_ID (getopt_internal)
+
+/* The system's getopt.h may have already included getopt-ext.h to
+ declare the unprefixed identifiers. Undef _GETOPT_EXT_H so that
+ getopt-ext.h declares them with prefixes. */
+# undef _GETOPT_EXT_H
+#endif
+
+/* Standalone applications get correct prototypes for getopt_long and
+ getopt_long_only; they declare "char **argv". For backward
+ compatibility with old applications, if __GETOPT_PREFIX is not
+ defined, we supply GNU-libc-compatible, but incorrect, prototypes
+ using "char *const *argv". (GNU libc is stuck with the incorrect
+ prototypes, as they are baked into older versions of LSB.) */
+#ifndef __getopt_argv_const
+# if defined __GETOPT_PREFIX
+# define __getopt_argv_const /* empty */
+# else
+# define __getopt_argv_const const
+# endif
+#endif
+
+#include
+
+#endif /* _GETOPT_PFX_EXT_H */
diff --git a/gnulib/getopt.c b/gnulib/getopt.c
new file mode 100644
index 0000000..1e2441c
--- /dev/null
+++ b/gnulib/getopt.c
@@ -0,0 +1,811 @@
+/* Getopt for GNU.
+ Copyright (C) 1987-2023 Free Software Foundation, Inc.
+ This file is part of the GNU C Library and is also part of gnulib.
+ Patches to this file should be submitted to both projects.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ . */
+
+#ifndef _LIBC
+# include
+#endif
+
+#include "getopt.h"
+
+#include
+#include
+#include
+#include
+
+#ifdef _LIBC
+/* When used as part of glibc, error printing must be done differently
+ for standards compliance. getopt is not a cancellation point, so
+ it must not call functions that are, and it is specified by an
+ older standard than stdio locking, so it must not refer to
+ functions in the "user namespace" related to stdio locking.
+ Finally, it must use glibc's internal message translation so that
+ the messages are looked up in the proper text domain. */
+# include
+# define fprintf __fxprintf_nocancel
+# define flockfile(fp) _IO_flockfile (fp)
+# define funlockfile(fp) _IO_funlockfile (fp)
+#else
+# include "gettext.h"
+# define _(msgid) gettext (msgid)
+/* When used standalone, flockfile and funlockfile might not be
+ available. */
+# if (!defined _POSIX_THREAD_SAFE_FUNCTIONS \
+ || (defined _WIN32 && ! defined __CYGWIN__))
+# define flockfile(fp) /* nop */
+# define funlockfile(fp) /* nop */
+# endif
+/* When used standalone, do not attempt to use alloca. */
+# define __libc_use_alloca(size) 0
+# undef alloca
+# define alloca(size) (abort (), (void *)0)
+#endif
+
+/* This implementation of 'getopt' has three modes for handling
+ options interspersed with non-option arguments. It can stop
+ scanning for options at the first non-option argument encountered,
+ as POSIX specifies. It can continue scanning for options after the
+ first non-option argument, but permute 'argv' as it goes so that,
+ after 'getopt' is done, all the options precede all the non-option
+ arguments and 'optind' points to the first non-option argument.
+ Or, it can report non-option arguments as if they were arguments to
+ the option character '\x01'.
+
+ The default behavior of 'getopt_long' is to permute the argument list.
+ When this implementation is used standalone, the default behavior of
+ 'getopt' is to stop at the first non-option argument, but when it is
+ used as part of GNU libc it also permutes the argument list. In both
+ cases, setting the environment variable POSIXLY_CORRECT to any value
+ disables permutation.
+
+ If the first character of the OPTSTRING argument to 'getopt' or
+ 'getopt_long' is '+', both functions will stop at the first
+ non-option argument. If it is '-', both functions will report
+ non-option arguments as arguments to the option character '\x01'. */
+
+#include "getopt_int.h"
+
+/* For communication from 'getopt' to the caller.
+ When 'getopt' finds an option that takes an argument,
+ the argument value is returned here.
+ Also, when 'ordering' is RETURN_IN_ORDER,
+ each non-option ARGV-element is returned here. */
+
+char *optarg;
+
+/* Index in ARGV of the next element to be scanned.
+ This is used for communication to and from the caller
+ and for communication between successive calls to 'getopt'.
+
+ On entry to 'getopt', zero means this is the first call; initialize.
+
+ When 'getopt' returns -1, this is the index of the first of the
+ non-option elements that the caller should itself scan.
+
+ Otherwise, 'optind' communicates from one call to the next
+ how much of ARGV has been scanned so far. */
+
+/* 1003.2 says this must be 1 before any call. */
+int optind = 1;
+
+/* Callers store zero here to inhibit the error message
+ for unrecognized options. */
+
+int opterr = 1;
+
+/* Set to an option character which was unrecognized.
+ This must be initialized on some systems to avoid linking in the
+ system's own getopt implementation. */
+
+int optopt = '?';
+
+/* Keep a global copy of all internal members of getopt_data. */
+
+static struct _getopt_data getopt_data;
+
+/* Exchange two adjacent subsequences of ARGV.
+ One subsequence is elements [first_nonopt,last_nonopt)
+ which contains all the non-options that have been skipped so far.
+ The other is elements [last_nonopt,optind), which contains all
+ the options processed since those non-options were skipped.
+
+ 'first_nonopt' and 'last_nonopt' are relocated so that they describe
+ the new indices of the non-options in ARGV after they are moved. */
+
+static void
+exchange (char **argv, struct _getopt_data *d)
+{
+ int bottom = d->__first_nonopt;
+ int middle = d->__last_nonopt;
+ int top = d->optind;
+ char *tem;
+
+ /* Exchange the shorter segment with the far end of the longer segment.
+ That puts the shorter segment into the right place.
+ It leaves the longer segment in the right place overall,
+ but it consists of two parts that need to be swapped next. */
+
+ while (top > middle && middle > bottom)
+ {
+ if (top - middle > middle - bottom)
+ {
+ /* Bottom segment is the short one. */
+ int len = middle - bottom;
+ int i;
+
+ /* Swap it with the top part of the top segment. */
+ for (i = 0; i < len; i++)
+ {
+ tem = argv[bottom + i];
+ argv[bottom + i] = argv[top - (middle - bottom) + i];
+ argv[top - (middle - bottom) + i] = tem;
+ }
+ /* Exclude the moved bottom segment from further swapping. */
+ top -= len;
+ }
+ else
+ {
+ /* Top segment is the short one. */
+ int len = top - middle;
+ int i;
+
+ /* Swap it with the bottom part of the bottom segment. */
+ for (i = 0; i < len; i++)
+ {
+ tem = argv[bottom + i];
+ argv[bottom + i] = argv[middle + i];
+ argv[middle + i] = tem;
+ }
+ /* Exclude the moved top segment from further swapping. */
+ bottom += len;
+ }
+ }
+
+ /* Update records for the slots the non-options now occupy. */
+
+ d->__first_nonopt += (d->optind - d->__last_nonopt);
+ d->__last_nonopt = d->optind;
+}
+
+/* Process the argument starting with d->__nextchar as a long option.
+ d->optind should *not* have been advanced over this argument.
+
+ If the value returned is -1, it was not actually a long option, the
+ state is unchanged, and the argument should be processed as a set
+ of short options (this can only happen when long_only is true).
+ Otherwise, the option (and its argument, if any) have been consumed
+ and the return value is the value to return from _getopt_internal_r. */
+static int
+process_long_option (int argc, char **argv, const char *optstring,
+ const struct option *longopts, int *longind,
+ int long_only, struct _getopt_data *d,
+ int print_errors, const char *prefix)
+{
+ char *nameend;
+ size_t namelen;
+ const struct option *p;
+ const struct option *pfound = NULL;
+ int n_options;
+ int option_index;
+
+ for (nameend = d->__nextchar; *nameend && *nameend != '='; nameend++)
+ /* Do nothing. */ ;
+ namelen = nameend - d->__nextchar;
+
+ /* First look for an exact match, counting the options as a side
+ effect. */
+ for (p = longopts, n_options = 0; p->name; p++, n_options++)
+ if (!strncmp (p->name, d->__nextchar, namelen)
+ && namelen == strlen (p->name))
+ {
+ /* Exact match found. */
+ pfound = p;
+ option_index = n_options;
+ break;
+ }
+
+ if (pfound == NULL)
+ {
+ /* Didn't find an exact match, so look for abbreviations. */
+ unsigned char *ambig_set = NULL;
+ int ambig_malloced = 0;
+ int ambig_fallback = 0;
+ int indfound = -1;
+
+ for (p = longopts, option_index = 0; p->name; p++, option_index++)
+ if (!strncmp (p->name, d->__nextchar, namelen))
+ {
+ if (pfound == NULL)
+ {
+ /* First nonexact match found. */
+ pfound = p;
+ indfound = option_index;
+ }
+ else if (long_only
+ || pfound->has_arg != p->has_arg
+ || pfound->flag != p->flag
+ || pfound->val != p->val)
+ {
+ /* Second or later nonexact match found. */
+ if (!ambig_fallback)
+ {
+ if (!print_errors)
+ /* Don't waste effort tracking the ambig set if
+ we're not going to print it anyway. */
+ ambig_fallback = 1;
+ else if (!ambig_set)
+ {
+ if (__libc_use_alloca (n_options))
+ ambig_set = alloca (n_options);
+ else if ((ambig_set = malloc (n_options)) == NULL)
+ /* Fall back to simpler error message. */
+ ambig_fallback = 1;
+ else
+ ambig_malloced = 1;
+
+ if (ambig_set)
+ {
+ memset (ambig_set, 0, n_options);
+ ambig_set[indfound] = 1;
+ }
+ }
+ if (ambig_set)
+ ambig_set[option_index] = 1;
+ }
+ }
+ }
+
+ if (ambig_set || ambig_fallback)
+ {
+ if (print_errors)
+ {
+ if (ambig_fallback)
+ fprintf (stderr, _("%s: option '%s%s' is ambiguous\n"),
+ argv[0], prefix, d->__nextchar);
+ else
+ {
+ flockfile (stderr);
+ fprintf (stderr,
+ _("%s: option '%s%s' is ambiguous; possibilities:"),
+ argv[0], prefix, d->__nextchar);
+
+ for (option_index = 0; option_index < n_options; option_index++)
+ if (ambig_set[option_index])
+ fprintf (stderr, " '%s%s'",
+ prefix, longopts[option_index].name);
+
+ /* This must use 'fprintf' even though it's only
+ printing a single character, so that it goes through
+ __fxprintf_nocancel when compiled as part of glibc. */
+ fprintf (stderr, "\n");
+ funlockfile (stderr);
+ }
+ }
+ if (ambig_malloced)
+ free (ambig_set);
+ d->__nextchar += strlen (d->__nextchar);
+ d->optind++;
+ d->optopt = 0;
+ return '?';
+ }
+
+ option_index = indfound;
+ }
+
+ if (pfound == NULL)
+ {
+ /* Can't find it as a long option. If this is not getopt_long_only,
+ or the option starts with '--' or is not a valid short option,
+ then it's an error. */
+ if (!long_only || argv[d->optind][1] == '-'
+ || strchr (optstring, *d->__nextchar) == NULL)
+ {
+ if (print_errors)
+ fprintf (stderr, _("%s: unrecognized option '%s%s'\n"),
+ argv[0], prefix, d->__nextchar);
+
+ d->__nextchar = NULL;
+ d->optind++;
+ d->optopt = 0;
+ return '?';
+ }
+
+ /* Otherwise interpret it as a short option. */
+ return -1;
+ }
+
+ /* We have found a matching long option. Consume it. */
+ d->optind++;
+ d->__nextchar = NULL;
+ if (*nameend)
+ {
+ /* Don't test has_arg with >, because some C compilers don't
+ allow it to be used on enums. */
+ if (pfound->has_arg)
+ d->optarg = nameend + 1;
+ else
+ {
+ if (print_errors)
+ fprintf (stderr,
+ _("%s: option '%s%s' doesn't allow an argument\n"),
+ argv[0], prefix, pfound->name);
+
+ d->optopt = pfound->val;
+ return '?';
+ }
+ }
+ else if (pfound->has_arg == 1)
+ {
+ if (d->optind < argc)
+ d->optarg = argv[d->optind++];
+ else
+ {
+ if (print_errors)
+ fprintf (stderr,
+ _("%s: option '%s%s' requires an argument\n"),
+ argv[0], prefix, pfound->name);
+
+ d->optopt = pfound->val;
+ return optstring[0] == ':' ? ':' : '?';
+ }
+ }
+
+ if (longind != NULL)
+ *longind = option_index;
+ if (pfound->flag)
+ {
+ *(pfound->flag) = pfound->val;
+ return 0;
+ }
+ return pfound->val;
+}
+
+/* Initialize internal data upon the first call to getopt. */
+
+static const char *
+_getopt_initialize (_GL_UNUSED int argc,
+ _GL_UNUSED char **argv, const char *optstring,
+ struct _getopt_data *d, int posixly_correct)
+{
+ /* Start processing options with ARGV-element 1 (since ARGV-element 0
+ is the program name); the sequence of previously skipped
+ non-option ARGV-elements is empty. */
+ if (d->optind == 0)
+ d->optind = 1;
+
+ d->__first_nonopt = d->__last_nonopt = d->optind;
+ d->__nextchar = NULL;
+
+ /* Determine how to handle the ordering of options and nonoptions. */
+ if (optstring[0] == '-')
+ {
+ d->__ordering = RETURN_IN_ORDER;
+ ++optstring;
+ }
+ else if (optstring[0] == '+')
+ {
+ d->__ordering = REQUIRE_ORDER;
+ ++optstring;
+ }
+ else if (posixly_correct || !!getenv ("POSIXLY_CORRECT"))
+ d->__ordering = REQUIRE_ORDER;
+ else
+ d->__ordering = PERMUTE;
+
+ d->__initialized = 1;
+ return optstring;
+}
+
+/* Scan elements of ARGV (whose length is ARGC) for option characters
+ given in OPTSTRING.
+
+ If an element of ARGV starts with '-', and is not exactly "-" or "--",
+ then it is an option element. The characters of this element
+ (aside from the initial '-') are option characters. If 'getopt'
+ is called repeatedly, it returns successively each of the option characters
+ from each of the option elements.
+
+ If 'getopt' finds another option character, it returns that character,
+ updating 'optind' and 'nextchar' so that the next call to 'getopt' can
+ resume the scan with the following option character or ARGV-element.
+
+ If there are no more option characters, 'getopt' returns -1.
+ Then 'optind' is the index in ARGV of the first ARGV-element
+ that is not an option. (The ARGV-elements have been permuted
+ so that those that are not options now come last.)
+
+ OPTSTRING is a string containing the legitimate option characters.
+ If an option character is seen that is not listed in OPTSTRING,
+ return '?' after printing an error message. If you set 'opterr' to
+ zero, the error message is suppressed but we still return '?'.
+
+ If a char in OPTSTRING is followed by a colon, that means it wants an arg,
+ so the following text in the same ARGV-element, or the text of the following
+ ARGV-element, is returned in 'optarg'. Two colons mean an option that
+ wants an optional arg; if there is text in the current ARGV-element,
+ it is returned in 'optarg', otherwise 'optarg' is set to zero.
+
+ If OPTSTRING starts with '-' or '+', it requests different methods of
+ handling the non-option ARGV-elements.
+ See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above.
+
+ Long-named options begin with '--' instead of '-'.
+ Their names may be abbreviated as long as the abbreviation is unique
+ or is an exact match for some defined option. If they have an
+ argument, it follows the option name in the same ARGV-element, separated
+ from the option name by a '=', or else the in next ARGV-element.
+ When 'getopt' finds a long-named option, it returns 0 if that option's
+ 'flag' field is nonzero, the value of the option's 'val' field
+ if the 'flag' field is zero.
+
+ The elements of ARGV aren't really const, because we permute them.
+ But we pretend they're const in the prototype to be compatible
+ with other systems.
+
+ LONGOPTS is a vector of 'struct option' terminated by an
+ element containing a name which is zero.
+
+ LONGIND returns the index in LONGOPT of the long-named option found.
+ It is only valid when a long-named option has been found by the most
+ recent call.
+
+ If LONG_ONLY is nonzero, '-' as well as '--' can introduce
+ long-named options. */
+
+int
+_getopt_internal_r (int argc, char **argv, const char *optstring,
+ const struct option *longopts, int *longind,
+ int long_only, struct _getopt_data *d, int posixly_correct)
+{
+ int print_errors = d->opterr;
+
+ if (argc < 1)
+ return -1;
+
+ d->optarg = NULL;
+
+ if (d->optind == 0 || !d->__initialized)
+ optstring = _getopt_initialize (argc, argv, optstring, d, posixly_correct);
+ else if (optstring[0] == '-' || optstring[0] == '+')
+ optstring++;
+
+ if (optstring[0] == ':')
+ print_errors = 0;
+
+ /* Test whether ARGV[optind] points to a non-option argument. */
+#define NONOPTION_P (argv[d->optind][0] != '-' || argv[d->optind][1] == '\0')
+
+ if (d->__nextchar == NULL || *d->__nextchar == '\0')
+ {
+ /* Advance to the next ARGV-element. */
+
+ /* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been
+ moved back by the user (who may also have changed the arguments). */
+ if (d->__last_nonopt > d->optind)
+ d->__last_nonopt = d->optind;
+ if (d->__first_nonopt > d->optind)
+ d->__first_nonopt = d->optind;
+
+ if (d->__ordering == PERMUTE)
+ {
+ /* If we have just processed some options following some non-options,
+ exchange them so that the options come first. */
+
+ if (d->__first_nonopt != d->__last_nonopt
+ && d->__last_nonopt != d->optind)
+ exchange (argv, d);
+ else if (d->__last_nonopt != d->optind)
+ d->__first_nonopt = d->optind;
+
+ /* Skip any additional non-options
+ and extend the range of non-options previously skipped. */
+
+ while (d->optind < argc && NONOPTION_P)
+ d->optind++;
+ d->__last_nonopt = d->optind;
+ }
+
+ /* The special ARGV-element '--' means premature end of options.
+ Skip it like a null option,
+ then exchange with previous non-options as if it were an option,
+ then skip everything else like a non-option. */
+
+ if (d->optind != argc && !strcmp (argv[d->optind], "--"))
+ {
+ d->optind++;
+
+ if (d->__first_nonopt != d->__last_nonopt
+ && d->__last_nonopt != d->optind)
+ exchange (argv, d);
+ else if (d->__first_nonopt == d->__last_nonopt)
+ d->__first_nonopt = d->optind;
+ d->__last_nonopt = argc;
+
+ d->optind = argc;
+ }
+
+ /* If we have done all the ARGV-elements, stop the scan
+ and back over any non-options that we skipped and permuted. */
+
+ if (d->optind == argc)
+ {
+ /* Set the next-arg-index to point at the non-options
+ that we previously skipped, so the caller will digest them. */
+ if (d->__first_nonopt != d->__last_nonopt)
+ d->optind = d->__first_nonopt;
+ return -1;
+ }
+
+ /* If we have come to a non-option and did not permute it,
+ either stop the scan or describe it to the caller and pass it by. */
+
+ if (NONOPTION_P)
+ {
+ if (d->__ordering == REQUIRE_ORDER)
+ return -1;
+ d->optarg = argv[d->optind++];
+ return 1;
+ }
+
+ /* We have found another option-ARGV-element.
+ Check whether it might be a long option. */
+ if (longopts)
+ {
+ if (argv[d->optind][1] == '-')
+ {
+ /* "--foo" is always a long option. The special option
+ "--" was handled above. */
+ d->__nextchar = argv[d->optind] + 2;
+ return process_long_option (argc, argv, optstring, longopts,
+ longind, long_only, d,
+ print_errors, "--");
+ }
+
+ /* If long_only and the ARGV-element has the form "-f",
+ where f is a valid short option, don't consider it an
+ abbreviated form of a long option that starts with f.
+ Otherwise there would be no way to give the -f short
+ option.
+
+ On the other hand, if there's a long option "fubar" and
+ the ARGV-element is "-fu", do consider that an
+ abbreviation of the long option, just like "--fu", and
+ not "-f" with arg "u".
+
+ This distinction seems to be the most useful approach. */
+ if (long_only && (argv[d->optind][2]
+ || !strchr (optstring, argv[d->optind][1])))
+ {
+ int code;
+ d->__nextchar = argv[d->optind] + 1;
+ code = process_long_option (argc, argv, optstring, longopts,
+ longind, long_only, d,
+ print_errors, "-");
+ if (code != -1)
+ return code;
+ }
+ }
+
+ /* It is not a long option. Skip the initial punctuation. */
+ d->__nextchar = argv[d->optind] + 1;
+ }
+
+ /* Look at and handle the next short option-character. */
+
+ {
+ char c = *d->__nextchar++;
+ const char *temp = strchr (optstring, c);
+
+ /* Increment 'optind' when we start to process its last character. */
+ if (*d->__nextchar == '\0')
+ ++d->optind;
+
+ if (temp == NULL || c == ':' || c == ';')
+ {
+ if (print_errors)
+ fprintf (stderr, _("%s: invalid option -- '%c'\n"), argv[0], c);
+ d->optopt = c;
+ return '?';
+ }
+
+ /* Convenience. Treat POSIX -W foo same as long option --foo */
+ if (temp[0] == 'W' && temp[1] == ';' && longopts != NULL)
+ {
+ /* This is an option that requires an argument. */
+ if (*d->__nextchar != '\0')
+ d->optarg = d->__nextchar;
+ else if (d->optind == argc)
+ {
+ if (print_errors)
+ fprintf (stderr,
+ _("%s: option requires an argument -- '%c'\n"),
+ argv[0], c);
+
+ d->optopt = c;
+ if (optstring[0] == ':')
+ c = ':';
+ else
+ c = '?';
+ return c;
+ }
+ else
+ d->optarg = argv[d->optind];
+
+ d->__nextchar = d->optarg;
+ d->optarg = NULL;
+ return process_long_option (argc, argv, optstring, longopts, longind,
+ 0 /* long_only */, d, print_errors, "-W ");
+ }
+ if (temp[1] == ':')
+ {
+ if (temp[2] == ':')
+ {
+ /* This is an option that accepts an argument optionally. */
+ if (*d->__nextchar != '\0')
+ {
+ d->optarg = d->__nextchar;
+ d->optind++;
+ }
+ else
+ d->optarg = NULL;
+ d->__nextchar = NULL;
+ }
+ else
+ {
+ /* This is an option that requires an argument. */
+ if (*d->__nextchar != '\0')
+ {
+ d->optarg = d->__nextchar;
+ /* If we end this ARGV-element by taking the rest as an arg,
+ we must advance to the next element now. */
+ d->optind++;
+ }
+ else if (d->optind == argc)
+ {
+ if (print_errors)
+ fprintf (stderr,
+ _("%s: option requires an argument -- '%c'\n"),
+ argv[0], c);
+
+ d->optopt = c;
+ if (optstring[0] == ':')
+ c = ':';
+ else
+ c = '?';
+ }
+ else
+ /* We already incremented 'optind' once;
+ increment it again when taking next ARGV-elt as argument. */
+ d->optarg = argv[d->optind++];
+ d->__nextchar = NULL;
+ }
+ }
+ return c;
+ }
+}
+
+int
+_getopt_internal (int argc, char **argv, const char *optstring,
+ const struct option *longopts, int *longind, int long_only,
+ int posixly_correct)
+{
+ int result;
+
+ getopt_data.optind = optind;
+ getopt_data.opterr = opterr;
+
+ result = _getopt_internal_r (argc, argv, optstring, longopts,
+ longind, long_only, &getopt_data,
+ posixly_correct);
+
+ optind = getopt_data.optind;
+ optarg = getopt_data.optarg;
+ optopt = getopt_data.optopt;
+
+ return result;
+}
+
+/* glibc gets a LSB-compliant getopt and a POSIX-complaint __posix_getopt.
+ Standalone applications just get a POSIX-compliant getopt.
+ POSIX and LSB both require these functions to take 'char *const *argv'
+ even though this is incorrect (because of the permutation). */
+#define GETOPT_ENTRY(NAME, POSIXLY_CORRECT) \
+ int \
+ NAME (int argc, char *const *argv, const char *optstring) \
+ { \
+ return _getopt_internal (argc, (char **)argv, optstring, \
+ 0, 0, 0, POSIXLY_CORRECT); \
+ }
+
+#ifdef _LIBC
+GETOPT_ENTRY(getopt, 0)
+GETOPT_ENTRY(__posix_getopt, 1)
+#else
+GETOPT_ENTRY(getopt, 1)
+#endif
+
+
+#ifdef TEST
+
+/* Compile with -DTEST to make an executable for use in testing
+ the above definition of 'getopt'. */
+
+int
+main (int argc, char **argv)
+{
+ int c;
+ int digit_optind = 0;
+
+ while (1)
+ {
+ int this_option_optind = optind ? optind : 1;
+
+ c = getopt (argc, argv, "abc:d:0123456789");
+ if (c == -1)
+ break;
+
+ switch (c)
+ {
+ case '0':
+ case '1':
+ case '2':
+ case '3':
+ case '4':
+ case '5':
+ case '6':
+ case '7':
+ case '8':
+ case '9':
+ if (digit_optind != 0 && digit_optind != this_option_optind)
+ printf ("digits occur in two different argv-elements.\n");
+ digit_optind = this_option_optind;
+ printf ("option %c\n", c);
+ break;
+
+ case 'a':
+ printf ("option a\n");
+ break;
+
+ case 'b':
+ printf ("option b\n");
+ break;
+
+ case 'c':
+ printf ("option c with value '%s'\n", optarg);
+ break;
+
+ case '?':
+ break;
+
+ default:
+ printf ("?? getopt returned character code 0%o ??\n", c);
+ }
+ }
+
+ if (optind < argc)
+ {
+ printf ("non-option ARGV-elements: ");
+ while (optind < argc)
+ printf ("%s ", argv[optind++]);
+ printf ("\n");
+ }
+
+ exit (0);
+}
+
+#endif /* TEST */
diff --git a/gnulib/getopt.in.h b/gnulib/getopt.in.h
new file mode 100644
index 0000000..0867d36
--- /dev/null
+++ b/gnulib/getopt.in.h
@@ -0,0 +1,61 @@
+/* Declarations for getopt.
+ Copyright (C) 1989-2023 Free Software Foundation, Inc.
+ This file is part of gnulib.
+ Unlike most of the getopt implementation, it is NOT shared
+ with the GNU C Library, which supplies a different version of
+ this file.
+
+ This file is free software: you can redistribute it and/or modify
+ it under the terms of the GNU Lesser General Public License as
+ published by the Free Software Foundation; either version 2.1 of the
+ License, or (at your option) any later version.
+
+ This file is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with this program. If not, see . */
+
+#ifndef _@GUARD_PREFIX@_GETOPT_H
+
+#if __GNUC__ >= 3
+@PRAGMA_SYSTEM_HEADER@
+#endif
+@PRAGMA_COLUMNS@
+
+/* The include_next requires a split double-inclusion guard. We must
+ also inform the replacement unistd.h to not recursively use
+ ; our definitions will be present soon enough. */
+#if @HAVE_GETOPT_H@
+# define _GL_SYSTEM_GETOPT
+# @INCLUDE_NEXT@ @NEXT_GETOPT_H@
+# undef _GL_SYSTEM_GETOPT
+#endif
+
+#define _@GUARD_PREFIX@_GETOPT_H 1
+
+/* Standalone applications should #define __GETOPT_PREFIX to an
+ identifier that prefixes the external functions and variables
+ defined in getopt-core.h and getopt-ext.h. When this happens,
+ include the headers that might declare getopt so that they will not
+ cause confusion if included after this file (if the system had
+ , we have already included it). */
+#if defined __GETOPT_PREFIX
+# if !@HAVE_GETOPT_H@
+# define __need_system_stdlib_h
+# include
+# undef __need_system_stdlib_h
+# include
+# include
+# endif
+#endif
+
+/* The definition of _GL_ARG_NONNULL is copied here. */
+
+#include
+#include
+#include
+
+#endif /* _@GUARD_PREFIX@_GETOPT_H */
diff --git a/gnulib/getopt1.c b/gnulib/getopt1.c
new file mode 100644
index 0000000..49323aa
--- /dev/null
+++ b/gnulib/getopt1.c
@@ -0,0 +1,159 @@
+/* getopt_long and getopt_long_only entry points for GNU getopt.
+ Copyright (C) 1987-2023 Free Software Foundation, Inc.
+ This file is part of the GNU C Library and is also part of gnulib.
+ Patches to this file should be submitted to both projects.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ . */
+
+#ifndef _LIBC
+# include
+#endif
+
+#include "getopt.h"
+#include "getopt_int.h"
+
+int
+getopt_long (int argc, char *__getopt_argv_const *argv, const char *options,
+ const struct option *long_options, int *opt_index)
+{
+ return _getopt_internal (argc, (char **) argv, options, long_options,
+ opt_index, 0, 0);
+}
+
+int
+_getopt_long_r (int argc, char **argv, const char *options,
+ const struct option *long_options, int *opt_index,
+ struct _getopt_data *d)
+{
+ return _getopt_internal_r (argc, argv, options, long_options, opt_index,
+ 0, d, 0);
+}
+
+/* Like getopt_long, but '-' as well as '--' can indicate a long option.
+ If an option that starts with '-' (not '--') doesn't match a long option,
+ but does match a short option, it is parsed as a short option
+ instead. */
+
+int
+getopt_long_only (int argc, char *__getopt_argv_const *argv,
+ const char *options,
+ const struct option *long_options, int *opt_index)
+{
+ return _getopt_internal (argc, (char **) argv, options, long_options,
+ opt_index, 1, 0);
+}
+
+int
+_getopt_long_only_r (int argc, char **argv, const char *options,
+ const struct option *long_options, int *opt_index,
+ struct _getopt_data *d)
+{
+ return _getopt_internal_r (argc, argv, options, long_options, opt_index,
+ 1, d, 0);
+}
+
+
+#ifdef TEST
+
+#include
+#include
+
+int
+main (int argc, char **argv)
+{
+ int c;
+ int digit_optind = 0;
+
+ while (1)
+ {
+ int this_option_optind = optind ? optind : 1;
+ int option_index = 0;
+ static const struct option long_options[] =
+ {
+ {"add", 1, 0, 0},
+ {"append", 0, 0, 0},
+ {"delete", 1, 0, 0},
+ {"verbose", 0, 0, 0},
+ {"create", 0, 0, 0},
+ {"file", 1, 0, 0},
+ {0, 0, 0, 0}
+ };
+
+ c = getopt_long (argc, argv, "abc:d:0123456789",
+ long_options, &option_index);
+ if (c == -1)
+ break;
+
+ switch (c)
+ {
+ case 0:
+ printf ("option %s", long_options[option_index].name);
+ if (optarg)
+ printf (" with arg %s", optarg);
+ printf ("\n");
+ break;
+
+ case '0':
+ case '1':
+ case '2':
+ case '3':
+ case '4':
+ case '5':
+ case '6':
+ case '7':
+ case '8':
+ case '9':
+ if (digit_optind != 0 && digit_optind != this_option_optind)
+ printf ("digits occur in two different argv-elements.\n");
+ digit_optind = this_option_optind;
+ printf ("option %c\n", c);
+ break;
+
+ case 'a':
+ printf ("option a\n");
+ break;
+
+ case 'b':
+ printf ("option b\n");
+ break;
+
+ case 'c':
+ printf ("option c with value '%s'\n", optarg);
+ break;
+
+ case 'd':
+ printf ("option d with value '%s'\n", optarg);
+ break;
+
+ case '?':
+ break;
+
+ default:
+ printf ("?? getopt returned character code 0%o ??\n", c);
+ }
+ }
+
+ if (optind < argc)
+ {
+ printf ("non-option ARGV-elements: ");
+ while (optind < argc)
+ printf ("%s ", argv[optind++]);
+ printf ("\n");
+ }
+
+ exit (0);
+}
+
+#endif /* TEST */
diff --git a/gnulib/getopt_int.h b/gnulib/getopt_int.h
new file mode 100644
index 0000000..4d9e24b
--- /dev/null
+++ b/gnulib/getopt_int.h
@@ -0,0 +1,118 @@
+/* Internal declarations for getopt.
+ Copyright (C) 1989-2023 Free Software Foundation, Inc.
+ This file is part of the GNU C Library and is also part of gnulib.
+ Patches to this file should be submitted to both projects.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ . */
+
+#ifndef _GETOPT_INT_H
+#define _GETOPT_INT_H 1
+
+#include
+
+extern int _getopt_internal (int ___argc, char **___argv,
+ const char *__shortopts,
+ const struct option *__longopts, int *__longind,
+ int __long_only, int __posixly_correct);
+
+
+/* Reentrant versions which can handle parsing multiple argument
+ vectors at the same time. */
+
+/* Describe how to deal with options that follow non-option ARGV-elements.
+
+ REQUIRE_ORDER means don't recognize them as options; stop option
+ processing when the first non-option is seen. This is what POSIX
+ specifies should happen.
+
+ PERMUTE means permute the contents of ARGV as we scan, so that
+ eventually all the non-options are at the end. This allows options
+ to be given in any order, even with programs that were not written
+ to expect this.
+
+ RETURN_IN_ORDER is an option available to programs that were
+ written to expect options and other ARGV-elements in any order
+ and that care about the ordering of the two. We describe each
+ non-option ARGV-element as if it were the argument of an option
+ with character code 1.
+
+ The special argument '--' forces an end of option-scanning regardless
+ of the value of 'ordering'. In the case of RETURN_IN_ORDER, only
+ '--' can cause 'getopt' to return -1 with 'optind' != ARGC. */
+
+enum __ord
+ {
+ REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER
+ };
+
+/* Data type for reentrant functions. */
+struct _getopt_data
+{
+ /* These have exactly the same meaning as the corresponding global
+ variables, except that they are used for the reentrant
+ versions of getopt. */
+ int optind;
+ int opterr;
+ int optopt;
+ char *optarg;
+
+ /* Internal members. */
+
+ /* True if the internal members have been initialized. */
+ int __initialized;
+
+ /* The next char to be scanned in the option-element
+ in which the last option character we returned was found.
+ This allows us to pick up the scan where we left off.
+
+ If this is zero, or a null string, it means resume the scan
+ by advancing to the next ARGV-element. */
+ char *__nextchar;
+
+ /* See __ord above. */
+ enum __ord __ordering;
+
+ /* Handle permutation of arguments. */
+
+ /* Describe the part of ARGV that contains non-options that have
+ been skipped. 'first_nonopt' is the index in ARGV of the first
+ of them; 'last_nonopt' is the index after the last of them. */
+
+ int __first_nonopt;
+ int __last_nonopt;
+};
+
+/* The initializer is necessary to set OPTIND and OPTERR to their
+ default values and to clear the initialization flag. */
+#define _GETOPT_DATA_INITIALIZER { 1, 1 }
+
+extern int _getopt_internal_r (int ___argc, char **___argv,
+ const char *__shortopts,
+ const struct option *__longopts, int *__longind,
+ int __long_only, struct _getopt_data *__data,
+ int __posixly_correct);
+
+extern int _getopt_long_r (int ___argc, char **___argv,
+ const char *__shortopts,
+ const struct option *__longopts, int *__longind,
+ struct _getopt_data *__data);
+
+extern int _getopt_long_only_r (int ___argc, char **___argv,
+ const char *__shortopts,
+ const struct option *__longopts,
+ int *__longind,
+ struct _getopt_data *__data);
+
+#endif /* getopt_int.h */
diff --git a/gnulib/gettext.h b/gnulib/gettext.h
new file mode 100644
index 0000000..d0462c4
--- /dev/null
+++ b/gnulib/gettext.h
@@ -0,0 +1,300 @@
+/* Convenience header for conditional use of GNU .
+ Copyright (C) 1995-1998, 2000-2002, 2004-2006, 2009-2023 Free Software
+ Foundation, Inc.
+
+ This file is free software: you can redistribute it and/or modify
+ it under the terms of the GNU Lesser General Public License as
+ published by the Free Software Foundation; either version 2.1 of the
+ License, or (at your option) any later version.
+
+ This file is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with this program. If not, see . */
+
+#ifndef _LIBGETTEXT_H
+#define _LIBGETTEXT_H 1
+
+/* NLS can be disabled through the configure --disable-nls option
+ or through "#define ENABLE NLS 0" before including this file. */
+#if defined ENABLE_NLS && ENABLE_NLS
+
+/* Get declarations of GNU message catalog functions. */
+# include
+
+/* You can set the DEFAULT_TEXT_DOMAIN macro to specify the domain used by
+ the gettext() and ngettext() macros. This is an alternative to calling
+ textdomain(), and is useful for libraries. */
+# ifdef DEFAULT_TEXT_DOMAIN
+# undef gettext
+# define gettext(Msgid) \
+ dgettext (DEFAULT_TEXT_DOMAIN, Msgid)
+# undef ngettext
+# define ngettext(Msgid1, Msgid2, N) \
+ dngettext (DEFAULT_TEXT_DOMAIN, Msgid1, Msgid2, N)
+# endif
+
+#else
+
+/* Solaris /usr/include/locale.h includes /usr/include/libintl.h, which
+ chokes if dcgettext is defined as a macro. So include it now, to make
+ later inclusions of a NOP. We don't include
+ as well because people using "gettext.h" will not include ,
+ and also including would fail on SunOS 4, whereas
+ is OK. */
+#if defined(__sun)
+# include
+#endif
+
+/* Many header files from the libstdc++ coming with g++ 3.3 or newer include
+ , which chokes if dcgettext is defined as a macro. So include
+ it now, to make later inclusions of a NOP. */
+#if defined(__cplusplus) && defined(__GNUG__) && (__GNUC__ >= 3)
+# include
+# if (__GLIBC__ >= 2 && !defined __UCLIBC__) || _GLIBCXX_HAVE_LIBINTL_H
+# include
+# endif
+#endif
+
+/* Disabled NLS.
+ The casts to 'const char *' serve the purpose of producing warnings
+ for invalid uses of the value returned from these functions.
+ On pre-ANSI systems without 'const', the config.h file is supposed to
+ contain "#define const". */
+# undef gettext
+# define gettext(Msgid) ((const char *) (Msgid))
+# undef dgettext
+# define dgettext(Domainname, Msgid) ((void) (Domainname), gettext (Msgid))
+# undef dcgettext
+# define dcgettext(Domainname, Msgid, Category) \
+ ((void) (Category), dgettext (Domainname, Msgid))
+# undef ngettext
+# define ngettext(Msgid1, Msgid2, N) \
+ ((N) == 1 \
+ ? ((void) (Msgid2), (const char *) (Msgid1)) \
+ : ((void) (Msgid1), (const char *) (Msgid2)))
+# undef dngettext
+# define dngettext(Domainname, Msgid1, Msgid2, N) \
+ ((void) (Domainname), ngettext (Msgid1, Msgid2, N))
+# undef dcngettext
+# define dcngettext(Domainname, Msgid1, Msgid2, N, Category) \
+ ((void) (Category), dngettext (Domainname, Msgid1, Msgid2, N))
+# undef textdomain
+# define textdomain(Domainname) ((const char *) (Domainname))
+# undef bindtextdomain
+# define bindtextdomain(Domainname, Dirname) \
+ ((void) (Domainname), (const char *) (Dirname))
+# undef bind_textdomain_codeset
+# define bind_textdomain_codeset(Domainname, Codeset) \
+ ((void) (Domainname), (const char *) (Codeset))
+
+#endif
+
+/* Prefer gnulib's setlocale override over libintl's setlocale override. */
+#ifdef GNULIB_defined_setlocale
+# undef setlocale
+# define setlocale rpl_setlocale
+#endif
+
+/* A pseudo function call that serves as a marker for the automated
+ extraction of messages, but does not call gettext(). The run-time
+ translation is done at a different place in the code.
+ The argument, String, should be a literal string. Concatenated strings
+ and other string expressions won't work.
+ The macro's expansion is not parenthesized, so that it is suitable as
+ initializer for static 'char[]' or 'const char[]' variables. */
+#define gettext_noop(String) String
+
+/* The separator between msgctxt and msgid in a .mo file. */
+#define GETTEXT_CONTEXT_GLUE "\004"
+
+/* Pseudo function calls, taking a MSGCTXT and a MSGID instead of just a
+ MSGID. MSGCTXT and MSGID must be string literals. MSGCTXT should be
+ short and rarely need to change.
+ The letter 'p' stands for 'particular' or 'special'. */
+#ifdef DEFAULT_TEXT_DOMAIN
+# define pgettext(Msgctxt, Msgid) \
+ pgettext_aux (DEFAULT_TEXT_DOMAIN, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, LC_MESSAGES)
+#else
+# define pgettext(Msgctxt, Msgid) \
+ pgettext_aux (NULL, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, LC_MESSAGES)
+#endif
+#define dpgettext(Domainname, Msgctxt, Msgid) \
+ pgettext_aux (Domainname, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, LC_MESSAGES)
+#define dcpgettext(Domainname, Msgctxt, Msgid, Category) \
+ pgettext_aux (Domainname, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, Category)
+#ifdef DEFAULT_TEXT_DOMAIN
+# define npgettext(Msgctxt, Msgid, MsgidPlural, N) \
+ npgettext_aux (DEFAULT_TEXT_DOMAIN, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, MsgidPlural, N, LC_MESSAGES)
+#else
+# define npgettext(Msgctxt, Msgid, MsgidPlural, N) \
+ npgettext_aux (NULL, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, MsgidPlural, N, LC_MESSAGES)
+#endif
+#define dnpgettext(Domainname, Msgctxt, Msgid, MsgidPlural, N) \
+ npgettext_aux (Domainname, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, MsgidPlural, N, LC_MESSAGES)
+#define dcnpgettext(Domainname, Msgctxt, Msgid, MsgidPlural, N, Category) \
+ npgettext_aux (Domainname, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, MsgidPlural, N, Category)
+
+#if defined __GNUC__ || defined __clang__
+__inline
+#else
+#ifdef __cplusplus
+inline
+#endif
+#endif
+static const char *
+pgettext_aux (const char *domain,
+ const char *msg_ctxt_id, const char *msgid,
+ int category)
+{
+ const char *translation = dcgettext (domain, msg_ctxt_id, category);
+ if (translation == msg_ctxt_id)
+ return msgid;
+ else
+ return translation;
+}
+
+#if defined __GNUC__ || defined __clang__
+__inline
+#else
+#ifdef __cplusplus
+inline
+#endif
+#endif
+static const char *
+npgettext_aux (const char *domain,
+ const char *msg_ctxt_id, const char *msgid,
+ const char *msgid_plural, unsigned long int n,
+ int category)
+{
+ const char *translation =
+ dcngettext (domain, msg_ctxt_id, msgid_plural, n, category);
+ if (translation == msg_ctxt_id || translation == msgid_plural)
+ return (n == 1 ? msgid : msgid_plural);
+ else
+ return translation;
+}
+
+/* The same thing extended for non-constant arguments. Here MSGCTXT and MSGID
+ can be arbitrary expressions. But for string literals these macros are
+ less efficient than those above. */
+
+#include
+
+/* GNULIB_NO_VLA can be defined to disable use of VLAs even if supported.
+ This relates to the -Wvla and -Wvla-larger-than warnings, enabled in
+ the default GCC many warnings set. This allows programs to disable use
+ of VLAs, which may be unintended, or may be awkward to support portably,
+ or may have security implications due to non-deterministic stack usage. */
+
+#if (!defined GNULIB_NO_VLA \
+ && defined __STDC_VERSION__ && 199901L <= __STDC_VERSION__ \
+ && !defined __STDC_NO_VLA__)
+# define _LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS 1
+#else
+# define _LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS 0
+#endif
+
+#if !_LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
+#include
+#endif
+
+#define pgettext_expr(Msgctxt, Msgid) \
+ dcpgettext_expr (NULL, Msgctxt, Msgid, LC_MESSAGES)
+#define dpgettext_expr(Domainname, Msgctxt, Msgid) \
+ dcpgettext_expr (Domainname, Msgctxt, Msgid, LC_MESSAGES)
+
+#if defined __GNUC__ || defined __clang__
+__inline
+#else
+#ifdef __cplusplus
+inline
+#endif
+#endif
+static const char *
+dcpgettext_expr (const char *domain,
+ const char *msgctxt, const char *msgid,
+ int category)
+{
+ size_t msgctxt_len = strlen (msgctxt) + 1;
+ size_t msgid_len = strlen (msgid) + 1;
+ const char *translation;
+#if _LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
+ char msg_ctxt_id[msgctxt_len + msgid_len];
+#else
+ char buf[1024];
+ char *msg_ctxt_id =
+ (msgctxt_len + msgid_len <= sizeof (buf)
+ ? buf
+ : (char *) malloc (msgctxt_len + msgid_len));
+ if (msg_ctxt_id != NULL)
+#endif
+ {
+ int found_translation;
+ memcpy (msg_ctxt_id, msgctxt, msgctxt_len - 1);
+ msg_ctxt_id[msgctxt_len - 1] = '\004';
+ memcpy (msg_ctxt_id + msgctxt_len, msgid, msgid_len);
+ translation = dcgettext (domain, msg_ctxt_id, category);
+ found_translation = (translation != msg_ctxt_id);
+#if !_LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
+ if (msg_ctxt_id != buf)
+ free (msg_ctxt_id);
+#endif
+ if (found_translation)
+ return translation;
+ }
+ return msgid;
+}
+
+#define npgettext_expr(Msgctxt, Msgid, MsgidPlural, N) \
+ dcnpgettext_expr (NULL, Msgctxt, Msgid, MsgidPlural, N, LC_MESSAGES)
+#define dnpgettext_expr(Domainname, Msgctxt, Msgid, MsgidPlural, N) \
+ dcnpgettext_expr (Domainname, Msgctxt, Msgid, MsgidPlural, N, LC_MESSAGES)
+
+#if defined __GNUC__ || defined __clang__
+__inline
+#else
+#ifdef __cplusplus
+inline
+#endif
+#endif
+static const char *
+dcnpgettext_expr (const char *domain,
+ const char *msgctxt, const char *msgid,
+ const char *msgid_plural, unsigned long int n,
+ int category)
+{
+ size_t msgctxt_len = strlen (msgctxt) + 1;
+ size_t msgid_len = strlen (msgid) + 1;
+ const char *translation;
+#if _LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
+ char msg_ctxt_id[msgctxt_len + msgid_len];
+#else
+ char buf[1024];
+ char *msg_ctxt_id =
+ (msgctxt_len + msgid_len <= sizeof (buf)
+ ? buf
+ : (char *) malloc (msgctxt_len + msgid_len));
+ if (msg_ctxt_id != NULL)
+#endif
+ {
+ int found_translation;
+ memcpy (msg_ctxt_id, msgctxt, msgctxt_len - 1);
+ msg_ctxt_id[msgctxt_len - 1] = '\004';
+ memcpy (msg_ctxt_id + msgctxt_len, msgid, msgid_len);
+ translation = dcngettext (domain, msg_ctxt_id, msgid_plural, n, category);
+ found_translation = !(translation == msg_ctxt_id || translation == msgid_plural);
+#if !_LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
+ if (msg_ctxt_id != buf)
+ free (msg_ctxt_id);
+#endif
+ if (found_translation)
+ return translation;
+ }
+ return (n == 1 ? msgid : msgid_plural);
+}
+
+#endif /* _LIBGETTEXT_H */
diff --git a/gnulib/stddef.in.h b/gnulib/stddef.in.h
new file mode 100644
index 0000000..ddbb74c
--- /dev/null
+++ b/gnulib/stddef.in.h
@@ -0,0 +1,186 @@
+/* A substitute for POSIX 2008 , for platforms that have issues.
+
+ Copyright (C) 2009-2023 Free Software Foundation, Inc.
+
+ This file is free software: you can redistribute it and/or modify
+ it under the terms of the GNU Lesser General Public License as
+ published by the Free Software Foundation; either version 2.1 of the
+ License, or (at your option) any later version.
+
+ This file is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with this program. If not, see . */
+
+/* Written by Eric Blake. */
+
+/*
+ * POSIX 2008 and ISO C 23 for platforms that have issues.
+ *
+ */
+
+#if __GNUC__ >= 3
+@PRAGMA_SYSTEM_HEADER@
+#endif
+@PRAGMA_COLUMNS@
+
+#if defined __need_wchar_t || defined __need_size_t \
+ || defined __need_ptrdiff_t || defined __need_NULL \
+ || defined __need_wint_t
+/* Special invocation convention inside gcc header files. In
+ particular, gcc provides a version of that blindly
+ redefines NULL even when __need_wint_t was defined, even though
+ wint_t is not normally provided by . Hence, we must
+ remember if special invocation has ever been used to obtain wint_t,
+ in which case we need to clean up NULL yet again. */
+
+# if !(defined _@GUARD_PREFIX@_STDDEF_H && defined _@GUARD_PREFIX@_STDDEF_WINT_T)
+# ifdef __need_wint_t
+# define _@GUARD_PREFIX@_STDDEF_WINT_T
+# endif
+# @INCLUDE_NEXT@ @NEXT_STDDEF_H@
+ /* On TinyCC, make sure that the macros that indicate the special invocation
+ convention get undefined. */
+# undef __need_wchar_t
+# undef __need_size_t
+# undef __need_ptrdiff_t
+# undef __need_NULL
+# undef __need_wint_t
+# endif
+
+#else
+/* Normal invocation convention. */
+
+# ifndef _@GUARD_PREFIX@_STDDEF_H
+
+/* On AIX 7.2, with xlc in 64-bit mode, defines max_align_t to a
+ type with alignment 4, but 'long' has alignment 8. */
+# if defined _AIX && defined __LP64__
+# if !GNULIB_defined_max_align_t
+# ifdef _MAX_ALIGN_T
+/* /usr/include/stddef.h has already defined max_align_t. Override it. */
+typedef long rpl_max_align_t;
+# define max_align_t rpl_max_align_t
+# else
+/* Prevent /usr/include/stddef.h from defining max_align_t. */
+typedef long max_align_t;
+# define _MAX_ALIGN_T
+# endif
+# define __CLANG_MAX_ALIGN_T_DEFINED
+# define GNULIB_defined_max_align_t 1
+# endif
+# endif
+
+/* The include_next requires a split double-inclusion guard. */
+
+# @INCLUDE_NEXT@ @NEXT_STDDEF_H@
+
+/* On NetBSD 5.0, the definition of NULL lacks proper parentheses. */
+# if (@REPLACE_NULL@ \
+ && (!defined _@GUARD_PREFIX@_STDDEF_H || defined _@GUARD_PREFIX@_STDDEF_WINT_T))
+# undef NULL
+# ifdef __cplusplus
+ /* ISO C++ says that the macro NULL must expand to an integer constant
+ expression, hence '((void *) 0)' is not allowed in C++. */
+# if __GNUG__ >= 3
+ /* GNU C++ has a __null macro that behaves like an integer ('int' or
+ 'long') but has the same size as a pointer. Use that, to avoid
+ warnings. */
+# define NULL __null
+# else
+# define NULL 0L
+# endif
+# else
+# define NULL ((void *) 0)
+# endif
+# endif
+
+# ifndef _@GUARD_PREFIX@_STDDEF_H
+# define _@GUARD_PREFIX@_STDDEF_H
+
+/* Some platforms lack wchar_t. */
+#if !@HAVE_WCHAR_T@
+# define wchar_t int
+#endif
+
+/* Some platforms lack max_align_t. The check for _GCC_MAX_ALIGN_T is
+ a hack in case the configure-time test was done with g++ even though
+ we are currently compiling with gcc.
+ On MSVC, max_align_t is defined only in C++ mode, after was
+ included. Its definition is good since it has an alignment of 8 (on x86
+ and x86_64).
+ Similarly on OS/2 kLIBC. */
+#if (defined _MSC_VER || (defined __KLIBC__ && !defined __LIBCN__)) \
+ && defined __cplusplus
+# include
+#else
+# if ! (@HAVE_MAX_ALIGN_T@ || (defined _GCC_MAX_ALIGN_T && !defined __clang__))
+# if !GNULIB_defined_max_align_t
+/* On the x86, the maximum storage alignment of double, long, etc. is 4,
+ but GCC's C11 ABI for x86 says that max_align_t has an alignment of 8,
+ and the C11 standard allows this. Work around this problem by
+ using __alignof__ (which returns 8 for double) rather than _Alignof
+ (which returns 4), and align each union member accordingly. */
+# if defined __GNUC__ || (__clang_major__ >= 4)
+# define _GL_STDDEF_ALIGNAS(type) \
+ __attribute__ ((__aligned__ (__alignof__ (type))))
+# else
+# define _GL_STDDEF_ALIGNAS(type) /* */
+# endif
+typedef union
+{
+ char *__p _GL_STDDEF_ALIGNAS (char *);
+ double __d _GL_STDDEF_ALIGNAS (double);
+ long double __ld _GL_STDDEF_ALIGNAS (long double);
+ long int __i _GL_STDDEF_ALIGNAS (long int);
+} rpl_max_align_t;
+# define max_align_t rpl_max_align_t
+# define __CLANG_MAX_ALIGN_T_DEFINED
+# define GNULIB_defined_max_align_t 1
+# endif
+# endif
+#endif
+
+/* ISO C 23 § 7.21.1 The unreachable macro */
+#ifndef unreachable
+
+/* Code borrowed from verify.h. */
+# ifndef _GL_HAS_BUILTIN_UNREACHABLE
+# if defined __clang_major__ && __clang_major__ < 5
+# define _GL_HAS_BUILTIN_UNREACHABLE 0
+# elif 4 < __GNUC__ + (5 <= __GNUC_MINOR__)
+# define _GL_HAS_BUILTIN_UNREACHABLE 1
+# elif defined __has_builtin
+# define _GL_HAS_BUILTIN_UNREACHABLE __has_builtin (__builtin_unreachable)
+# else
+# define _GL_HAS_BUILTIN_UNREACHABLE 0
+# endif
+# endif
+
+# if _GL_HAS_BUILTIN_UNREACHABLE
+# define unreachable() __builtin_unreachable ()
+# elif 1200 <= _MSC_VER
+# define unreachable() __assume (0)
+# else
+/* Declare abort(), without including . */
+extern
+# if defined __cplusplus
+"C"
+# endif
+_Noreturn
+void abort (void)
+# if defined __cplusplus && (__GLIBC__ >= 2)
+throw ()
+# endif
+;
+# define unreachable() abort ()
+# endif
+
+#endif
+
+# endif /* _@GUARD_PREFIX@_STDDEF_H */
+# endif /* _@GUARD_PREFIX@_STDDEF_H */
+#endif /* __need_XXX */
diff --git a/gnulib/sys_types.in.h b/gnulib/sys_types.in.h
new file mode 100644
index 0000000..082a6c6
--- /dev/null
+++ b/gnulib/sys_types.in.h
@@ -0,0 +1,106 @@
+/* Provide a more complete sys/types.h.
+
+ Copyright (C) 2011-2023 Free Software Foundation, Inc.
+
+ This file is free software: you can redistribute it and/or modify
+ it under the terms of the GNU Lesser General Public License as
+ published by the Free Software Foundation; either version 2.1 of the
+ License, or (at your option) any later version.
+
+ This file is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with this program. If not, see . */
+
+#if __GNUC__ >= 3
+@PRAGMA_SYSTEM_HEADER@
+#endif
+@PRAGMA_COLUMNS@
+
+#if defined _WIN32 && !defined __CYGWIN__ \
+ && (defined __need_off_t || defined __need___off64_t \
+ || defined __need_ssize_t || defined __need_time_t)
+
+/* Special invocation convention inside mingw header files. */
+
+#@INCLUDE_NEXT@ @NEXT_SYS_TYPES_H@
+
+#else
+/* Normal invocation convention. */
+
+#ifndef _@GUARD_PREFIX@_SYS_TYPES_H
+
+/* The include_next requires a split double-inclusion guard. */
+# define _GL_INCLUDING_SYS_TYPES_H
+#@INCLUDE_NEXT@ @NEXT_SYS_TYPES_H@
+# undef _GL_INCLUDING_SYS_TYPES_H
+
+#ifndef _@GUARD_PREFIX@_SYS_TYPES_H
+#define _@GUARD_PREFIX@_SYS_TYPES_H
+
+/* Override off_t if Large File Support is requested on native Windows. */
+#if @WINDOWS_64_BIT_OFF_T@
+/* Same as int64_t in . */
+# if defined _MSC_VER
+# define off_t __int64
+# else
+# define off_t long long int
+# endif
+/* Indicator, for gnulib internal purposes. */
+# define _GL_WINDOWS_64_BIT_OFF_T 1
+#endif
+
+/* Override dev_t and ino_t if distinguishable inodes support is requested
+ on native Windows. */
+#if @WINDOWS_STAT_INODES@
+
+# if @WINDOWS_STAT_INODES@ == 2
+/* Experimental, not useful in Windows 10. */
+
+/* Define dev_t to a 64-bit type. */
+# if !defined GNULIB_defined_dev_t
+typedef unsigned long long int rpl_dev_t;
+# undef dev_t
+# define dev_t rpl_dev_t
+# define GNULIB_defined_dev_t 1
+# endif
+
+/* Define ino_t to a 128-bit type. */
+# if !defined GNULIB_defined_ino_t
+/* MSVC does not have a 128-bit integer type.
+ GCC has a 128-bit integer type __int128, but only on 64-bit targets. */
+typedef struct { unsigned long long int _gl_ino[2]; } rpl_ino_t;
+# undef ino_t
+# define ino_t rpl_ino_t
+# define GNULIB_defined_ino_t 1
+# endif
+
+# else /* @WINDOWS_STAT_INODES@ == 1 */
+
+/* Define ino_t to a 64-bit type. */
+# if !defined GNULIB_defined_ino_t
+typedef unsigned long long int rpl_ino_t;
+# undef ino_t
+# define ino_t rpl_ino_t
+# define GNULIB_defined_ino_t 1
+# endif
+
+# endif
+
+/* Indicator, for gnulib internal purposes. */
+# define _GL_WINDOWS_STAT_INODES @WINDOWS_STAT_INODES@
+
+#endif
+
+/* MSVC 9 defines size_t in , not in . */
+/* But avoid namespace pollution on glibc systems. */
+#if (defined _WIN32 && ! defined __CYGWIN__) && ! defined __GLIBC__
+# include
+#endif
+
+#endif /* _@GUARD_PREFIX@_SYS_TYPES_H */
+#endif /* _@GUARD_PREFIX@_SYS_TYPES_H */
+#endif /* __need_XXX */
diff --git a/gnulib/unistd.c b/gnulib/unistd.c
new file mode 100644
index 0000000..be7a825
--- /dev/null
+++ b/gnulib/unistd.c
@@ -0,0 +1,22 @@
+/* Inline functions for .
+
+ Copyright (C) 2012-2023 Free Software Foundation, Inc.
+
+ This file is free software: you can redistribute it and/or modify
+ it under the terms of the GNU Lesser General Public License as
+ published by the Free Software Foundation; either version 2.1 of the
+ License, or (at your option) any later version.
+
+ This file is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with this program. If not, see . */
+
+#include
+
+#define _GL_UNISTD_INLINE _GL_EXTERN_INLINE
+#include "unistd.h"
+typedef int dummy;
diff --git a/gnulib/unistd.in.h b/gnulib/unistd.in.h
new file mode 100644
index 0000000..8ba9867
--- /dev/null
+++ b/gnulib/unistd.in.h
@@ -0,0 +1,2411 @@
+/* Substitute for and wrapper around .
+ Copyright (C) 2003-2023 Free Software Foundation, Inc.
+
+ This file is free software: you can redistribute it and/or modify
+ it under the terms of the GNU Lesser General Public License as
+ published by the Free Software Foundation; either version 2.1 of the
+ License, or (at your option) any later version.
+
+ This file is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with this program. If not, see . */
+
+#ifndef _@GUARD_PREFIX@_UNISTD_H
+
+#if __GNUC__ >= 3
+@PRAGMA_SYSTEM_HEADER@
+#endif
+@PRAGMA_COLUMNS@
+
+#if @HAVE_UNISTD_H@ && defined _GL_INCLUDING_UNISTD_H
+/* Special invocation convention:
+ - On Mac OS X 10.3.9 we have a sequence of nested includes
+ -> -> ->
+ In this situation, the functions are not yet declared, therefore we cannot
+ provide the C++ aliases. */
+
+#@INCLUDE_NEXT@ @NEXT_UNISTD_H@
+
+#else
+/* Normal invocation convention. */
+
+/* The include_next requires a split double-inclusion guard. */
+#if @HAVE_UNISTD_H@
+# define _GL_INCLUDING_UNISTD_H
+# @INCLUDE_NEXT@ @NEXT_UNISTD_H@
+# undef _GL_INCLUDING_UNISTD_H
+#endif
+
+/* Avoid lseek bugs in FreeBSD, macOS .
+ This bug is fixed after FreeBSD 13; see .
+ Use macOS "9999" to stand for a future fixed macOS version. */
+#if defined __FreeBSD__ && __FreeBSD__ < 14
+# undef SEEK_DATA
+# undef SEEK_HOLE
+#elif defined __APPLE__ && defined __MACH__ && defined SEEK_DATA
+# ifdef __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__
+# include
+# endif
+# if (!defined MAC_OS_X_VERSION_MIN_REQUIRED \
+ || MAC_OS_X_VERSION_MIN_REQUIRED < 99990000)
+# include /* It also defines the two macros. */
+# undef SEEK_DATA
+# undef SEEK_HOLE
+# endif
+#endif
+
+/* Get all possible declarations of gethostname(). */
+#if @GNULIB_GETHOSTNAME@ && @UNISTD_H_HAVE_WINSOCK2_H@ \
+ && !defined _GL_INCLUDING_WINSOCK2_H
+# define _GL_INCLUDING_WINSOCK2_H
+# include
+# undef _GL_INCLUDING_WINSOCK2_H
+#endif
+
+#if !defined _@GUARD_PREFIX@_UNISTD_H && !defined _GL_INCLUDING_WINSOCK2_H
+#define _@GUARD_PREFIX@_UNISTD_H
+
+/* NetBSD 5.0 mis-defines NULL. Also get size_t. */
+/* But avoid namespace pollution on glibc systems. */
+#ifndef __GLIBC__
+# include
+#endif
+
+/* mingw doesn't define the SEEK_* or *_FILENO macros in . */
+/* MSVC declares 'unlink' in , not in . We must include
+ it before we #define unlink rpl_unlink. */
+/* Cygwin 1.7.1 declares symlinkat in , not in . */
+/* But avoid namespace pollution on glibc systems. */
+#if (!(defined SEEK_CUR && defined SEEK_END && defined SEEK_SET) \
+ || ((@GNULIB_UNLINK@ || defined GNULIB_POSIXCHECK) \
+ && (defined _WIN32 && ! defined __CYGWIN__)) \
+ || ((@GNULIB_SYMLINKAT@ || defined GNULIB_POSIXCHECK) \
+ && defined __CYGWIN__)) \
+ && ! defined __GLIBC__
+# include
+#endif
+
+/* Cygwin 1.7.1 and Android 4.3 declare unlinkat in , not in
+ . */
+/* But avoid namespace pollution on glibc systems. */
+#if (@GNULIB_UNLINKAT@ || defined GNULIB_POSIXCHECK) \
+ && (defined __CYGWIN__ || defined __ANDROID__) \
+ && ! defined __GLIBC__
+# include
+#endif
+
+/* mingw fails to declare _exit in . */
+/* mingw, MSVC, BeOS, Haiku declare environ in , not in
+ . */
+/* Solaris declares getcwd not only in but also in . */
+/* OSF Tru64 Unix cannot see gnulib rpl_strtod when system is
+ included here. */
+/* But avoid namespace pollution on glibc systems. */
+#if !defined __GLIBC__ && !defined __osf__
+# define __need_system_stdlib_h
+# include
+# undef __need_system_stdlib_h
+#endif
+
+/* Native Windows platforms declare _chdir, _getcwd, _rmdir in
+ and/or , not in .
+ They also declare _access(), _chmod(), _close(), _dup(), _dup2(), _isatty(),
+ _lseek(), _read(), _unlink(), _write() in . */
+#if defined _WIN32 && !defined __CYGWIN__
+# include
+# include
+#endif
+
+/* Native Windows platforms declare _execl*, _execv* in . */
+#if defined _WIN32 && !defined __CYGWIN__
+# include
+#endif
+
+/* AIX and OSF/1 5.1 declare getdomainname in , not in .
+ NonStop Kernel declares gethostname in , not in . */
+/* But avoid namespace pollution on glibc systems. */
+#if ((@GNULIB_GETDOMAINNAME@ && (defined _AIX || defined __osf__)) \
+ || (@GNULIB_GETHOSTNAME@ && defined __TANDEM)) \
+ && !defined __GLIBC__
+# include
+#endif
+
+/* Mac OS X 10.13, Solaris 11.4, and Android 9.0 declare getentropy in
+ , not in . */
+/* But avoid namespace pollution on glibc systems. */
+#if (@GNULIB_GETENTROPY@ || defined GNULIB_POSIXCHECK) \
+ && ((defined __APPLE__ && defined __MACH__) || defined __sun \
+ || defined __ANDROID__) \
+ && @UNISTD_H_HAVE_SYS_RANDOM_H@ \
+ && !defined __GLIBC__
+# include
+#endif
+
+/* Android 4.3 declares fchownat in , not in . */
+/* But avoid namespace pollution on glibc systems. */
+#if (@GNULIB_FCHOWNAT@ || defined GNULIB_POSIXCHECK) && defined __ANDROID__ \
+ && !defined __GLIBC__
+# include
+#endif
+
+/* MSVC defines off_t in .
+ May also define off_t to a 64-bit type on native Windows. */
+/* Get off_t, ssize_t, mode_t. */
+#include
+
+/* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */
+
+/* The definition of _GL_ARG_NONNULL is copied here. */
+
+/* The definition of _GL_WARN_ON_USE is copied here. */
+
+
+/* Get getopt(), optarg, optind, opterr, optopt. */
+#if @GNULIB_GETOPT_POSIX@ && @GNULIB_UNISTD_H_GETOPT@ && !defined _GL_SYSTEM_GETOPT
+# include
+# include
+#endif
+
+#ifndef _GL_INLINE_HEADER_BEGIN
+ #error "Please include config.h first."
+#endif
+_GL_INLINE_HEADER_BEGIN
+#ifndef _GL_UNISTD_INLINE
+# define _GL_UNISTD_INLINE _GL_INLINE
+#endif
+
+/* Hide some function declarations from . */
+
+#if @GNULIB_GETHOSTNAME@ && @UNISTD_H_HAVE_WINSOCK2_H@
+# if !defined _@GUARD_PREFIX@_SYS_SOCKET_H
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef socket
+# define socket socket_used_without_including_sys_socket_h
+# undef connect
+# define connect connect_used_without_including_sys_socket_h
+# undef accept
+# define accept accept_used_without_including_sys_socket_h
+# undef bind
+# define bind bind_used_without_including_sys_socket_h
+# undef getpeername
+# define getpeername getpeername_used_without_including_sys_socket_h
+# undef getsockname
+# define getsockname getsockname_used_without_including_sys_socket_h
+# undef getsockopt
+# define getsockopt getsockopt_used_without_including_sys_socket_h
+# undef listen
+# define listen listen_used_without_including_sys_socket_h
+# undef recv
+# define recv recv_used_without_including_sys_socket_h
+# undef send
+# define send send_used_without_including_sys_socket_h
+# undef recvfrom
+# define recvfrom recvfrom_used_without_including_sys_socket_h
+# undef sendto
+# define sendto sendto_used_without_including_sys_socket_h
+# undef setsockopt
+# define setsockopt setsockopt_used_without_including_sys_socket_h
+# undef shutdown
+# define shutdown shutdown_used_without_including_sys_socket_h
+# else
+ _GL_WARN_ON_USE (socket,
+ "socket() used without including ");
+ _GL_WARN_ON_USE (connect,
+ "connect() used without including ");
+ _GL_WARN_ON_USE (accept,
+ "accept() used without including ");
+ _GL_WARN_ON_USE (bind,
+ "bind() used without including ");
+ _GL_WARN_ON_USE (getpeername,
+ "getpeername() used without including ");
+ _GL_WARN_ON_USE (getsockname,
+ "getsockname() used without including ");
+ _GL_WARN_ON_USE (getsockopt,
+ "getsockopt() used without including ");
+ _GL_WARN_ON_USE (listen,
+ "listen() used without including ");
+ _GL_WARN_ON_USE (recv,
+ "recv() used without including ");
+ _GL_WARN_ON_USE (send,
+ "send() used without including ");
+ _GL_WARN_ON_USE (recvfrom,
+ "recvfrom() used without including ");
+ _GL_WARN_ON_USE (sendto,
+ "sendto() used without including ");
+ _GL_WARN_ON_USE (setsockopt,
+ "setsockopt() used without including ");
+ _GL_WARN_ON_USE (shutdown,
+ "shutdown() used without including ");
+# endif
+# endif
+# if !defined _@GUARD_PREFIX@_SYS_SELECT_H
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef select
+# define select select_used_without_including_sys_select_h
+# else
+ _GL_WARN_ON_USE (select,
+ "select() used without including ");
+# endif
+# endif
+#endif
+
+
+/* OS/2 EMX lacks these macros. */
+#ifndef STDIN_FILENO
+# define STDIN_FILENO 0
+#endif
+#ifndef STDOUT_FILENO
+# define STDOUT_FILENO 1
+#endif
+#ifndef STDERR_FILENO
+# define STDERR_FILENO 2
+#endif
+
+/* Ensure *_OK macros exist. */
+#ifndef F_OK
+# define F_OK 0
+# define X_OK 1
+# define W_OK 2
+# define R_OK 4
+#endif
+
+
+/* Declare overridden functions. */
+
+
+#if @GNULIB_ACCESS@
+# if @REPLACE_ACCESS@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef access
+# define access rpl_access
+# endif
+_GL_FUNCDECL_RPL (access, int, (const char *file, int mode)
+ _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (access, int, (const char *file, int mode));
+# elif defined _WIN32 && !defined __CYGWIN__
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef access
+# define access _access
+# endif
+_GL_CXXALIAS_MDA (access, int, (const char *file, int mode));
+# else
+_GL_CXXALIAS_SYS (access, int, (const char *file, int mode));
+# endif
+_GL_CXXALIASWARN (access);
+#elif defined GNULIB_POSIXCHECK
+# undef access
+# if HAVE_RAW_DECL_ACCESS
+/* The access() function is a security risk. */
+_GL_WARN_ON_USE (access, "access does not always support X_OK - "
+ "use gnulib module access for portability; "
+ "also, this function is a security risk - "
+ "use the gnulib module faccessat instead");
+# endif
+#elif @GNULIB_MDA_ACCESS@
+/* On native Windows, map 'access' to '_access', so that -loldnames is not
+ required. In C++ with GNULIB_NAMESPACE, avoid differences between
+ platforms by defining GNULIB_NAMESPACE::access always. */
+# if defined _WIN32 && !defined __CYGWIN__
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef access
+# define access _access
+# endif
+_GL_CXXALIAS_MDA (access, int, (const char *file, int mode));
+# else
+_GL_CXXALIAS_SYS (access, int, (const char *file, int mode));
+# endif
+_GL_CXXALIASWARN (access);
+#endif
+
+
+#if @GNULIB_CHDIR@
+# if defined _WIN32 && !defined __CYGWIN__
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef chdir
+# define chdir _chdir
+# endif
+_GL_CXXALIAS_MDA (chdir, int, (const char *file));
+# else
+_GL_CXXALIAS_SYS (chdir, int, (const char *file) _GL_ARG_NONNULL ((1)));
+# endif
+_GL_CXXALIASWARN (chdir);
+#elif defined GNULIB_POSIXCHECK
+# undef chdir
+# if HAVE_RAW_DECL_CHDIR
+_GL_WARN_ON_USE (chown, "chdir is not always in - "
+ "use gnulib module chdir for portability");
+# endif
+#elif @GNULIB_MDA_CHDIR@
+/* On native Windows, map 'chdir' to '_chdir', so that -loldnames is not
+ required. In C++ with GNULIB_NAMESPACE, avoid differences between
+ platforms by defining GNULIB_NAMESPACE::chdir always. */
+# if defined _WIN32 && !defined __CYGWIN__
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef chdir
+# define chdir _chdir
+# endif
+_GL_CXXALIAS_MDA (chdir, int, (const char *file));
+# else
+_GL_CXXALIAS_SYS (chdir, int, (const char *file) _GL_ARG_NONNULL ((1)));
+# endif
+_GL_CXXALIASWARN (chdir);
+#endif
+
+
+#if @GNULIB_CHOWN@
+/* Change the owner of FILE to UID (if UID is not -1) and the group of FILE
+ to GID (if GID is not -1). Follow symbolic links.
+ Return 0 if successful, otherwise -1 and errno set.
+ See the POSIX:2008 specification
+ . */
+# if @REPLACE_DUP2@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# define dup2 rpl_dup2
+# endif
+_GL_FUNCDECL_RPL (dup2, int, (int oldfd, int newfd));
+_GL_CXXALIAS_RPL (dup2, int, (int oldfd, int newfd));
+# elif defined _WIN32 && !defined __CYGWIN__
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef dup2
+# define dup2 _dup2
+# endif
+_GL_CXXALIAS_MDA (dup2, int, (int oldfd, int newfd));
+# else
+_GL_CXXALIAS_SYS (dup2, int, (int oldfd, int newfd));
+# endif
+_GL_CXXALIASWARN (dup2);
+#elif defined GNULIB_POSIXCHECK
+# undef dup2
+# if HAVE_RAW_DECL_DUP2
+_GL_WARN_ON_USE (dup2, "dup2 is unportable - "
+ "use gnulib module dup2 for portability");
+# endif
+#elif @GNULIB_MDA_DUP2@
+/* On native Windows, map 'dup2' to '_dup2', so that -loldnames is not
+ required. In C++ with GNULIB_NAMESPACE, avoid differences between
+ platforms by defining GNULIB_NAMESPACE::dup2 always. */
+# if defined _WIN32 && !defined __CYGWIN__
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef dup2
+# define dup2 _dup2
+# endif
+_GL_CXXALIAS_MDA (dup2, int, (int oldfd, int newfd));
+# else
+_GL_CXXALIAS_SYS (dup2, int, (int oldfd, int newfd));
+# endif
+_GL_CXXALIASWARN (dup2);
+#endif
+
+
+#if @GNULIB_DUP3@
+/* Copy the file descriptor OLDFD into file descriptor NEWFD, with the
+ specified flags.
+ The flags are a bitmask, possibly including O_CLOEXEC (defined in )
+ and O_TEXT, O_BINARY (defined in "binary-io.h").
+ Close NEWFD first if it is open.
+ Return newfd if successful, otherwise -1 and errno set.
+ See the Linux man page at
+ . */
+# if @REPLACE_DUP3@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef dup3
+# define dup3 rpl_dup3
+# endif
+_GL_FUNCDECL_RPL (dup3, int, (int oldfd, int newfd, int flags));
+_GL_CXXALIAS_RPL (dup3, int, (int oldfd, int newfd, int flags));
+# else
+# if !@HAVE_DUP3@
+_GL_FUNCDECL_SYS (dup3, int, (int oldfd, int newfd, int flags));
+# endif
+_GL_CXXALIAS_SYS (dup3, int, (int oldfd, int newfd, int flags));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (dup3);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef dup3
+# if HAVE_RAW_DECL_DUP3
+_GL_WARN_ON_USE (dup3, "dup3 is unportable - "
+ "use gnulib module dup3 for portability");
+# endif
+#endif
+
+
+#if @GNULIB_ENVIRON@
+# if defined __CYGWIN__ && !defined __i386__
+/* The 'environ' variable is defined in a DLL. Therefore its declaration needs
+ the '__declspec(dllimport)' attribute, but the system's lacks it.
+ This leads to a link error on 64-bit Cygwin when the option
+ -Wl,--disable-auto-import is in use. */
+_GL_EXTERN_C __declspec(dllimport) char **environ;
+# endif
+# if !@HAVE_DECL_ENVIRON@
+/* Set of environment variables and values. An array of strings of the form
+ "VARIABLE=VALUE", terminated with a NULL. */
+# if defined __APPLE__ && defined __MACH__
+# include
+# if !TARGET_OS_IPHONE && !TARGET_IPHONE_SIMULATOR
+# define _GL_USE_CRT_EXTERNS
+# endif
+# endif
+# ifdef _GL_USE_CRT_EXTERNS
+# include
+# define environ (*_NSGetEnviron ())
+# else
+# ifdef __cplusplus
+extern "C" {
+# endif
+extern char **environ;
+# ifdef __cplusplus
+}
+# endif
+# endif
+# endif
+#elif defined GNULIB_POSIXCHECK
+# if HAVE_RAW_DECL_ENVIRON
+_GL_UNISTD_INLINE char ***
+_GL_WARN_ON_USE_ATTRIBUTE ("environ is unportable - "
+ "use gnulib module environ for portability")
+rpl_environ (void)
+{
+ return &environ;
+}
+# undef environ
+# define environ (*rpl_environ ())
+# endif
+#endif
+
+
+#if @GNULIB_EUIDACCESS@
+/* Like access(), except that it uses the effective user id and group id of
+ the current process. */
+# if !@HAVE_EUIDACCESS@
+_GL_FUNCDECL_SYS (euidaccess, int, (const char *filename, int mode)
+ _GL_ARG_NONNULL ((1)));
+# endif
+_GL_CXXALIAS_SYS (euidaccess, int, (const char *filename, int mode));
+_GL_CXXALIASWARN (euidaccess);
+# if defined GNULIB_POSIXCHECK
+/* Like access(), this function is a security risk. */
+_GL_WARN_ON_USE (euidaccess, "the euidaccess function is a security risk - "
+ "use the gnulib module faccessat instead");
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef euidaccess
+# if HAVE_RAW_DECL_EUIDACCESS
+_GL_WARN_ON_USE (euidaccess, "euidaccess is unportable - "
+ "use gnulib module euidaccess for portability");
+# endif
+#endif
+
+
+#if @GNULIB_EXECL@
+# if @REPLACE_EXECL@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef execl
+# define execl rpl_execl
+# endif
+_GL_FUNCDECL_RPL (execl, int, (const char *program, const char *arg, ...)
+ _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (execl, int, (const char *program, const char *arg, ...));
+# else
+_GL_CXXALIAS_SYS (execl, int, (const char *program, const char *arg, ...));
+# endif
+_GL_CXXALIASWARN (execl);
+#elif defined GNULIB_POSIXCHECK
+# undef execl
+# if HAVE_RAW_DECL_EXECL
+_GL_WARN_ON_USE (execl, "execl behaves very differently on mingw - "
+ "use gnulib module execl for portability");
+# endif
+#elif @GNULIB_MDA_EXECL@
+/* On native Windows, map 'execl' to '_execl', so that -loldnames is not
+ required. In C++ with GNULIB_NAMESPACE, avoid differences between
+ platforms by defining GNULIB_NAMESPACE::execl always. */
+# if defined _WIN32 && !defined __CYGWIN__
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef execl
+# define execl _execl
+# endif
+_GL_CXXALIAS_MDA (execl, intptr_t, (const char *program, const char *arg, ...));
+# else
+_GL_CXXALIAS_SYS (execl, int, (const char *program, const char *arg, ...));
+# endif
+_GL_CXXALIASWARN (execl);
+#endif
+
+#if @GNULIB_EXECLE@
+# if @REPLACE_EXECLE@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef execle
+# define execle rpl_execle
+# endif
+_GL_FUNCDECL_RPL (execle, int, (const char *program, const char *arg, ...)
+ _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (execle, int, (const char *program, const char *arg, ...));
+# else
+_GL_CXXALIAS_SYS (execle, int, (const char *program, const char *arg, ...));
+# endif
+_GL_CXXALIASWARN (execle);
+#elif defined GNULIB_POSIXCHECK
+# undef execle
+# if HAVE_RAW_DECL_EXECLE
+_GL_WARN_ON_USE (execle, "execle behaves very differently on mingw - "
+ "use gnulib module execle for portability");
+# endif
+#elif @GNULIB_MDA_EXECLE@
+/* On native Windows, map 'execle' to '_execle', so that -loldnames is not
+ required. In C++ with GNULIB_NAMESPACE, avoid differences between
+ platforms by defining GNULIB_NAMESPACE::execle always. */
+# if defined _WIN32 && !defined __CYGWIN__
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef execle
+# define execle _execle
+# endif
+_GL_CXXALIAS_MDA (execle, intptr_t,
+ (const char *program, const char *arg, ...));
+# else
+_GL_CXXALIAS_SYS (execle, int, (const char *program, const char *arg, ...));
+# endif
+_GL_CXXALIASWARN (execle);
+#endif
+
+#if @GNULIB_EXECLP@
+# if @REPLACE_EXECLP@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef execlp
+# define execlp rpl_execlp
+# endif
+_GL_FUNCDECL_RPL (execlp, int, (const char *program, const char *arg, ...)
+ _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (execlp, int, (const char *program, const char *arg, ...));
+# else
+_GL_CXXALIAS_SYS (execlp, int, (const char *program, const char *arg, ...));
+# endif
+_GL_CXXALIASWARN (execlp);
+#elif defined GNULIB_POSIXCHECK
+# undef execlp
+# if HAVE_RAW_DECL_EXECLP
+_GL_WARN_ON_USE (execlp, "execlp behaves very differently on mingw - "
+ "use gnulib module execlp for portability");
+# endif
+#elif @GNULIB_MDA_EXECLP@
+/* On native Windows, map 'execlp' to '_execlp', so that -loldnames is not
+ required. In C++ with GNULIB_NAMESPACE, avoid differences between
+ platforms by defining GNULIB_NAMESPACE::execlp always. */
+# if defined _WIN32 && !defined __CYGWIN__
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef execlp
+# define execlp _execlp
+# endif
+_GL_CXXALIAS_MDA (execlp, intptr_t,
+ (const char *program, const char *arg, ...));
+# else
+_GL_CXXALIAS_SYS (execlp, int, (const char *program, const char *arg, ...));
+# endif
+_GL_CXXALIASWARN (execlp);
+#endif
+
+
+#if @GNULIB_EXECV@
+# if @REPLACE_EXECV@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef execv
+# define execv rpl_execv
+# endif
+_GL_FUNCDECL_RPL (execv, int, (const char *program, char * const *argv)
+ _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (execv, int, (const char *program, char * const *argv));
+# else
+_GL_CXXALIAS_SYS (execv, int, (const char *program, char * const *argv));
+# endif
+_GL_CXXALIASWARN (execv);
+#elif defined GNULIB_POSIXCHECK
+# undef execv
+# if HAVE_RAW_DECL_EXECV
+_GL_WARN_ON_USE (execv, "execv behaves very differently on mingw - "
+ "use gnulib module execv for portability");
+# endif
+#elif @GNULIB_MDA_EXECV@
+/* On native Windows, map 'execv' to '_execv', so that -loldnames is not
+ required. In C++ with GNULIB_NAMESPACE, avoid differences between
+ platforms by defining GNULIB_NAMESPACE::execv always. */
+# if defined _WIN32 && !defined __CYGWIN__
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef execv
+# define execv _execv
+# endif
+_GL_CXXALIAS_MDA_CAST (execv, intptr_t,
+ (const char *program, char * const *argv));
+# else
+_GL_CXXALIAS_SYS (execv, int, (const char *program, char * const *argv));
+# endif
+_GL_CXXALIASWARN (execv);
+#endif
+
+#if @GNULIB_EXECVE@
+# if @REPLACE_EXECVE@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef execve
+# define execve rpl_execve
+# endif
+_GL_FUNCDECL_RPL (execve, int,
+ (const char *program, char * const *argv, char * const *env)
+ _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (execve, int,
+ (const char *program, char * const *argv, char * const *env));
+# else
+_GL_CXXALIAS_SYS (execve, int,
+ (const char *program, char * const *argv, char * const *env));
+# endif
+_GL_CXXALIASWARN (execve);
+#elif defined GNULIB_POSIXCHECK
+# undef execve
+# if HAVE_RAW_DECL_EXECVE
+_GL_WARN_ON_USE (execve, "execve behaves very differently on mingw - "
+ "use gnulib module execve for portability");
+# endif
+#elif @GNULIB_MDA_EXECVE@
+/* On native Windows, map 'execve' to '_execve', so that -loldnames is not
+ required. In C++ with GNULIB_NAMESPACE, avoid differences between
+ platforms by defining GNULIB_NAMESPACE::execve always. */
+# if defined _WIN32 && !defined __CYGWIN__
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef execve
+# define execve _execve
+# endif
+_GL_CXXALIAS_MDA_CAST (execve, intptr_t,
+ (const char *program, char * const *argv,
+ char * const *env));
+# else
+_GL_CXXALIAS_SYS (execve, int,
+ (const char *program, char * const *argv, char * const *env));
+# endif
+_GL_CXXALIASWARN (execve);
+#endif
+
+#if @GNULIB_EXECVP@
+# if @REPLACE_EXECVP@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef execvp
+# define execvp rpl_execvp
+# endif
+_GL_FUNCDECL_RPL (execvp, int, (const char *program, char * const *argv)
+ _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (execvp, int, (const char *program, char * const *argv));
+# else
+_GL_CXXALIAS_SYS (execvp, int, (const char *program, char * const *argv));
+# endif
+_GL_CXXALIASWARN (execvp);
+#elif defined GNULIB_POSIXCHECK
+# undef execvp
+# if HAVE_RAW_DECL_EXECVP
+_GL_WARN_ON_USE (execvp, "execvp behaves very differently on mingw - "
+ "use gnulib module execvp for portability");
+# endif
+#elif @GNULIB_MDA_EXECVP@
+/* On native Windows, map 'execvp' to '_execvp', so that -loldnames is not
+ required. In C++ with GNULIB_NAMESPACE, avoid differences between
+ platforms by defining GNULIB_NAMESPACE::execvp always. */
+# if defined _WIN32 && !defined __CYGWIN__
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef execvp
+# define execvp _execvp
+# endif
+_GL_CXXALIAS_MDA_CAST (execvp, intptr_t,
+ (const char *program, char * const *argv));
+# else
+_GL_CXXALIAS_SYS (execvp, int, (const char *program, char * const *argv));
+# endif
+_GL_CXXALIASWARN (execvp);
+#endif
+
+#if @GNULIB_EXECVPE@
+# if @REPLACE_EXECVPE@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef execvpe
+# define execvpe rpl_execvpe
+# endif
+_GL_FUNCDECL_RPL (execvpe, int,
+ (const char *program, char * const *argv, char * const *env)
+ _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (execvpe, int,
+ (const char *program, char * const *argv, char * const *env));
+# else
+# if !@HAVE_DECL_EXECVPE@
+_GL_FUNCDECL_SYS (execvpe, int,
+ (const char *program, char * const *argv, char * const *env)
+ _GL_ARG_NONNULL ((1, 2)));
+# endif
+_GL_CXXALIAS_SYS (execvpe, int,
+ (const char *program, char * const *argv, char * const *env));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (execvpe);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef execvpe
+# if HAVE_RAW_DECL_EXECVPE
+_GL_WARN_ON_USE (execvpe, "execvpe behaves very differently on mingw - "
+ "use gnulib module execvpe for portability");
+# endif
+#elif @GNULIB_MDA_EXECVPE@
+/* On native Windows, map 'execvpe' to '_execvpe', so that -loldnames is not
+ required. In C++ with GNULIB_NAMESPACE, avoid differences between
+ platforms by defining GNULIB_NAMESPACE::execvpe on all platforms that have
+ it. */
+# if defined _WIN32 && !defined __CYGWIN__
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef execvpe
+# define execvpe _execvpe
+# endif
+_GL_CXXALIAS_MDA_CAST (execvpe, intptr_t,
+ (const char *program, char * const *argv,
+ char * const *env));
+# elif @HAVE_EXECVPE@
+# if !@HAVE_DECL_EXECVPE@
+_GL_FUNCDECL_SYS (execvpe, int,
+ (const char *program, char * const *argv, char * const *env)
+ _GL_ARG_NONNULL ((1, 2)));
+# endif
+_GL_CXXALIAS_SYS (execvpe, int,
+ (const char *program, char * const *argv, char * const *env));
+# endif
+# if (defined _WIN32 && !defined __CYGWIN__) || @HAVE_EXECVPE@
+_GL_CXXALIASWARN (execvpe);
+# endif
+#endif
+
+
+#if @GNULIB_FACCESSAT@
+# if @REPLACE_FACCESSAT@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef faccessat
+# define faccessat rpl_faccessat
+# endif
+_GL_FUNCDECL_RPL (faccessat, int,
+ (int fd, char const *name, int mode, int flag)
+ _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (faccessat, int,
+ (int fd, char const *name, int mode, int flag));
+# else
+# if !@HAVE_FACCESSAT@
+_GL_FUNCDECL_SYS (faccessat, int,
+ (int fd, char const *file, int mode, int flag)
+ _GL_ARG_NONNULL ((2)));
+# endif
+_GL_CXXALIAS_SYS (faccessat, int,
+ (int fd, char const *file, int mode, int flag));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (faccessat);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef faccessat
+# if HAVE_RAW_DECL_FACCESSAT
+_GL_WARN_ON_USE (faccessat, "faccessat is not portable - "
+ "use gnulib module faccessat for portability");
+# endif
+#endif
+
+
+#if @GNULIB_FCHDIR@
+/* Change the process' current working directory to the directory on which
+ the given file descriptor is open.
+ Return 0 if successful, otherwise -1 and errno set.
+ See the POSIX:2008 specification
+ . */
+# if ! @HAVE_FCHDIR@
+_GL_FUNCDECL_SYS (fchdir, int, (int /*fd*/));
+
+/* Gnulib internal hooks needed to maintain the fchdir metadata. */
+_GL_EXTERN_C int _gl_register_fd (int fd, const char *filename)
+ _GL_ARG_NONNULL ((2));
+_GL_EXTERN_C void _gl_unregister_fd (int fd);
+_GL_EXTERN_C int _gl_register_dup (int oldfd, int newfd);
+_GL_EXTERN_C const char *_gl_directory_name (int fd);
+
+# else
+# if !@HAVE_DECL_FCHDIR@
+_GL_FUNCDECL_SYS (fchdir, int, (int /*fd*/));
+# endif
+# endif
+_GL_CXXALIAS_SYS (fchdir, int, (int /*fd*/));
+_GL_CXXALIASWARN (fchdir);
+#elif defined GNULIB_POSIXCHECK
+# undef fchdir
+# if HAVE_RAW_DECL_FCHDIR
+_GL_WARN_ON_USE (fchdir, "fchdir is unportable - "
+ "use gnulib module fchdir for portability");
+# endif
+#endif
+
+
+#if @GNULIB_FCHOWNAT@
+# if @REPLACE_FCHOWNAT@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef fchownat
+# define fchownat rpl_fchownat
+# endif
+_GL_FUNCDECL_RPL (fchownat, int, (int fd, char const *file,
+ uid_t owner, gid_t group, int flag)
+ _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (fchownat, int, (int fd, char const *file,
+ uid_t owner, gid_t group, int flag));
+# else
+# if !@HAVE_FCHOWNAT@
+_GL_FUNCDECL_SYS (fchownat, int, (int fd, char const *file,
+ uid_t owner, gid_t group, int flag)
+ _GL_ARG_NONNULL ((2)));
+# endif
+_GL_CXXALIAS_SYS (fchownat, int, (int fd, char const *file,
+ uid_t owner, gid_t group, int flag));
+# endif
+_GL_CXXALIASWARN (fchownat);
+#elif defined GNULIB_POSIXCHECK
+# undef fchownat
+# if HAVE_RAW_DECL_FCHOWNAT
+_GL_WARN_ON_USE (fchownat, "fchownat is not portable - "
+ "use gnulib module fchownat for portability");
+# endif
+#endif
+
+
+#if @GNULIB_FDATASYNC@
+/* Synchronize changes to a file.
+ Return 0 if successful, otherwise -1 and errno set.
+ See POSIX:2008 specification
+ . */
+# if @REPLACE_FDATASYNC@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef fdatasync
+# define fdatasync rpl_fdatasync
+# endif
+_GL_FUNCDECL_RPL (fdatasync, int, (int fd));
+_GL_CXXALIAS_RPL (fdatasync, int, (int fd));
+# else
+# if !@HAVE_FDATASYNC@|| !@HAVE_DECL_FDATASYNC@
+_GL_FUNCDECL_SYS (fdatasync, int, (int fd));
+# endif
+_GL_CXXALIAS_SYS (fdatasync, int, (int fd));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (fdatasync);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef fdatasync
+# if HAVE_RAW_DECL_FDATASYNC
+_GL_WARN_ON_USE (fdatasync, "fdatasync is unportable - "
+ "use gnulib module fdatasync for portability");
+# endif
+#endif
+
+
+#if @GNULIB_FSYNC@
+/* Synchronize changes, including metadata, to a file.
+ Return 0 if successful, otherwise -1 and errno set.
+ See POSIX:2008 specification
+ . */
+# if !@HAVE_FSYNC@
+_GL_FUNCDECL_SYS (fsync, int, (int fd));
+# endif
+_GL_CXXALIAS_SYS (fsync, int, (int fd));
+_GL_CXXALIASWARN (fsync);
+#elif defined GNULIB_POSIXCHECK
+# undef fsync
+# if HAVE_RAW_DECL_FSYNC
+_GL_WARN_ON_USE (fsync, "fsync is unportable - "
+ "use gnulib module fsync for portability");
+# endif
+#endif
+
+
+#if @GNULIB_FTRUNCATE@
+/* Change the size of the file to which FD is opened to become equal to LENGTH.
+ Return 0 if successful, otherwise -1 and errno set.
+ See the POSIX:2008 specification
+ . */
+# if @REPLACE_FTRUNCATE@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef ftruncate
+# define ftruncate rpl_ftruncate
+# endif
+_GL_FUNCDECL_RPL (ftruncate, int, (int fd, off_t length));
+_GL_CXXALIAS_RPL (ftruncate, int, (int fd, off_t length));
+# else
+# if !@HAVE_FTRUNCATE@
+_GL_FUNCDECL_SYS (ftruncate, int, (int fd, off_t length));
+# endif
+_GL_CXXALIAS_SYS (ftruncate, int, (int fd, off_t length));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (ftruncate);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef ftruncate
+# if HAVE_RAW_DECL_FTRUNCATE
+_GL_WARN_ON_USE (ftruncate, "ftruncate is unportable - "
+ "use gnulib module ftruncate for portability");
+# endif
+#endif
+
+
+#if @GNULIB_GETCWD@
+/* Get the name of the current working directory, and put it in SIZE bytes
+ of BUF.
+ Return BUF if successful, or NULL if the directory couldn't be determined
+ or SIZE was too small.
+ See the POSIX:2008 specification
+ .
+ Additionally, the gnulib module 'getcwd' guarantees the following GNU
+ extension: If BUF is NULL, an array is allocated with 'malloc'; the array
+ is SIZE bytes long, unless SIZE == 0, in which case it is as big as
+ necessary. */
+# if @REPLACE_GETCWD@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# define getcwd rpl_getcwd
+# endif
+_GL_FUNCDECL_RPL (getcwd, char *, (char *buf, size_t size));
+_GL_CXXALIAS_RPL (getcwd, char *, (char *buf, size_t size));
+# elif defined _WIN32 && !defined __CYGWIN__
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef getcwd
+# define getcwd _getcwd
+# endif
+_GL_CXXALIAS_MDA (getcwd, char *, (char *buf, size_t size));
+# else
+/* Need to cast, because on mingw, the second parameter is
+ int size. */
+_GL_CXXALIAS_SYS_CAST (getcwd, char *, (char *buf, size_t size));
+# endif
+_GL_CXXALIASWARN (getcwd);
+#elif defined GNULIB_POSIXCHECK
+# undef getcwd
+# if HAVE_RAW_DECL_GETCWD
+_GL_WARN_ON_USE (getcwd, "getcwd is unportable - "
+ "use gnulib module getcwd for portability");
+# endif
+#elif @GNULIB_MDA_GETCWD@
+/* On native Windows, map 'getcwd' to '_getcwd', so that -loldnames is not
+ required. In C++ with GNULIB_NAMESPACE, avoid differences between
+ platforms by defining GNULIB_NAMESPACE::getcwd always. */
+# if defined _WIN32 && !defined __CYGWIN__
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef getcwd
+# define getcwd _getcwd
+# endif
+/* Need to cast, because on mingw, the second parameter is either
+ 'int size' or 'size_t size'. */
+_GL_CXXALIAS_MDA_CAST (getcwd, char *, (char *buf, size_t size));
+# else
+_GL_CXXALIAS_SYS_CAST (getcwd, char *, (char *buf, size_t size));
+# endif
+_GL_CXXALIASWARN (getcwd);
+#endif
+
+
+#if @GNULIB_GETDOMAINNAME@
+/* Return the NIS domain name of the machine.
+ WARNING! The NIS domain name is unrelated to the fully qualified host name
+ of the machine. It is also unrelated to email addresses.
+ WARNING! The NIS domain name is usually the empty string or "(none)" when
+ not using NIS.
+
+ Put up to LEN bytes of the NIS domain name into NAME.
+ Null terminate it if the name is shorter than LEN.
+ If the NIS domain name is longer than LEN, set errno = EINVAL and return -1.
+ Return 0 if successful, otherwise set errno and return -1. */
+# if @REPLACE_GETDOMAINNAME@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef getdomainname
+# define getdomainname rpl_getdomainname
+# endif
+_GL_FUNCDECL_RPL (getdomainname, int, (char *name, size_t len)
+ _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (getdomainname, int, (char *name, size_t len));
+# else
+# if !@HAVE_DECL_GETDOMAINNAME@
+_GL_FUNCDECL_SYS (getdomainname, int, (char *name, size_t len)
+ _GL_ARG_NONNULL ((1)));
+# endif
+_GL_CXXALIAS_SYS (getdomainname, int, (char *name, size_t len));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (getdomainname);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef getdomainname
+# if HAVE_RAW_DECL_GETDOMAINNAME
+_GL_WARN_ON_USE (getdomainname, "getdomainname is unportable - "
+ "use gnulib module getdomainname for portability");
+# endif
+#endif
+
+
+#if @GNULIB_GETDTABLESIZE@
+/* Return the maximum number of file descriptors in the current process.
+ In POSIX, this is same as sysconf (_SC_OPEN_MAX). */
+# if @REPLACE_GETDTABLESIZE@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef getdtablesize
+# define getdtablesize rpl_getdtablesize
+# endif
+_GL_FUNCDECL_RPL (getdtablesize, int, (void));
+_GL_CXXALIAS_RPL (getdtablesize, int, (void));
+# else
+# if !@HAVE_GETDTABLESIZE@
+_GL_FUNCDECL_SYS (getdtablesize, int, (void));
+# endif
+/* Need to cast, because on AIX, the parameter list is
+ (...). */
+_GL_CXXALIAS_SYS_CAST (getdtablesize, int, (void));
+# endif
+_GL_CXXALIASWARN (getdtablesize);
+#elif defined GNULIB_POSIXCHECK
+# undef getdtablesize
+# if HAVE_RAW_DECL_GETDTABLESIZE
+_GL_WARN_ON_USE (getdtablesize, "getdtablesize is unportable - "
+ "use gnulib module getdtablesize for portability");
+# endif
+#endif
+
+
+#if @GNULIB_GETENTROPY@
+/* Fill a buffer with random bytes. */
+# if @REPLACE_GETENTROPY@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef getentropy
+# define getentropy rpl_getentropy
+# endif
+_GL_FUNCDECL_RPL (getentropy, int, (void *buffer, size_t length));
+_GL_CXXALIAS_RPL (getentropy, int, (void *buffer, size_t length));
+# else
+# if !@HAVE_GETENTROPY@
+_GL_FUNCDECL_SYS (getentropy, int, (void *buffer, size_t length));
+# endif
+_GL_CXXALIAS_SYS (getentropy, int, (void *buffer, size_t length));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (getentropy);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef getentropy
+# if HAVE_RAW_DECL_GETENTROPY
+_GL_WARN_ON_USE (getentropy, "getentropy is unportable - "
+ "use gnulib module getentropy for portability");
+# endif
+#endif
+
+
+#if @GNULIB_GETGROUPS@
+/* Return the supplemental groups that the current process belongs to.
+ It is unspecified whether the effective group id is in the list.
+ If N is 0, return the group count; otherwise, N describes how many
+ entries are available in GROUPS. Return -1 and set errno if N is
+ not 0 and not large enough. Fails with ENOSYS on some systems. */
+# if @REPLACE_GETGROUPS@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef getgroups
+# define getgroups rpl_getgroups
+# endif
+_GL_FUNCDECL_RPL (getgroups, int, (int n, gid_t *groups));
+_GL_CXXALIAS_RPL (getgroups, int, (int n, gid_t *groups));
+# else
+# if !@HAVE_GETGROUPS@
+_GL_FUNCDECL_SYS (getgroups, int, (int n, gid_t *groups));
+# endif
+_GL_CXXALIAS_SYS (getgroups, int, (int n, gid_t *groups));
+# endif
+_GL_CXXALIASWARN (getgroups);
+#elif defined GNULIB_POSIXCHECK
+# undef getgroups
+# if HAVE_RAW_DECL_GETGROUPS
+_GL_WARN_ON_USE (getgroups, "getgroups is unportable - "
+ "use gnulib module getgroups for portability");
+# endif
+#endif
+
+
+#if @GNULIB_GETHOSTNAME@
+/* Return the standard host name of the machine.
+ WARNING! The host name may or may not be fully qualified.
+
+ Put up to LEN bytes of the host name into NAME.
+ Null terminate it if the name is shorter than LEN.
+ If the host name is longer than LEN, set errno = EINVAL and return -1.
+ Return 0 if successful, otherwise set errno and return -1. */
+# if @UNISTD_H_HAVE_WINSOCK2_H@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef gethostname
+# define gethostname rpl_gethostname
+# endif
+_GL_FUNCDECL_RPL (gethostname, int, (char *name, size_t len)
+ _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (gethostname, int, (char *name, size_t len));
+# else
+# if !@HAVE_GETHOSTNAME@
+_GL_FUNCDECL_SYS (gethostname, int, (char *name, size_t len)
+ _GL_ARG_NONNULL ((1)));
+# endif
+/* Need to cast, because on Solaris 10 and OSF/1 5.1 systems, the second
+ parameter is
+ int len. */
+_GL_CXXALIAS_SYS_CAST (gethostname, int, (char *name, size_t len));
+# endif
+_GL_CXXALIASWARN (gethostname);
+#elif @UNISTD_H_HAVE_WINSOCK2_H@
+# undef gethostname
+# define gethostname gethostname_used_without_requesting_gnulib_module_gethostname
+#elif defined GNULIB_POSIXCHECK
+# undef gethostname
+# if HAVE_RAW_DECL_GETHOSTNAME
+_GL_WARN_ON_USE (gethostname, "gethostname is unportable - "
+ "use gnulib module gethostname for portability");
+# endif
+#endif
+
+
+#if @GNULIB_GETLOGIN@
+/* Returns the user's login name, or NULL if it cannot be found. Upon error,
+ returns NULL with errno set.
+
+ See .
+
+ Most programs don't need to use this function, because the information is
+ available through environment variables:
+ ${LOGNAME-$USER} on Unix platforms,
+ $USERNAME on native Windows platforms.
+ */
+# if !@HAVE_DECL_GETLOGIN@
+_GL_FUNCDECL_SYS (getlogin, char *, (void));
+# endif
+_GL_CXXALIAS_SYS (getlogin, char *, (void));
+_GL_CXXALIASWARN (getlogin);
+#elif defined GNULIB_POSIXCHECK
+# undef getlogin
+# if HAVE_RAW_DECL_GETLOGIN
+_GL_WARN_ON_USE (getlogin, "getlogin is unportable - "
+ "use gnulib module getlogin for portability");
+# endif
+#endif
+
+
+#if @GNULIB_GETLOGIN_R@
+/* Copies the user's login name to NAME.
+ The array pointed to by NAME has room for SIZE bytes.
+
+ Returns 0 if successful. Upon error, an error number is returned, or -1 in
+ the case that the login name cannot be found but no specific error is
+ provided (this case is hopefully rare but is left open by the POSIX spec).
+
+ See .
+
+ Most programs don't need to use this function, because the information is
+ available through environment variables:
+ ${LOGNAME-$USER} on Unix platforms,
+ $USERNAME on native Windows platforms.
+ */
+# if @REPLACE_GETLOGIN_R@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# define getlogin_r rpl_getlogin_r
+# endif
+_GL_FUNCDECL_RPL (getlogin_r, int, (char *name, size_t size)
+ _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (getlogin_r, int, (char *name, size_t size));
+# else
+# if !@HAVE_DECL_GETLOGIN_R@
+_GL_FUNCDECL_SYS (getlogin_r, int, (char *name, size_t size)
+ _GL_ARG_NONNULL ((1)));
+# endif
+/* Need to cast, because on Solaris 10 systems, the second argument is
+ int size. */
+_GL_CXXALIAS_SYS_CAST (getlogin_r, int, (char *name, size_t size));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (getlogin_r);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef getlogin_r
+# if HAVE_RAW_DECL_GETLOGIN_R
+_GL_WARN_ON_USE (getlogin_r, "getlogin_r is unportable - "
+ "use gnulib module getlogin_r for portability");
+# endif
+#endif
+
+
+#if @GNULIB_GETPAGESIZE@
+# if @REPLACE_GETPAGESIZE@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# define getpagesize rpl_getpagesize
+# endif
+_GL_FUNCDECL_RPL (getpagesize, int, (void));
+_GL_CXXALIAS_RPL (getpagesize, int, (void));
+# else
+/* On HP-UX, getpagesize exists, but it is not declared in even if
+ the compiler options -D_HPUX_SOURCE -D_XOPEN_SOURCE=600 are used. */
+# if defined __hpux
+_GL_FUNCDECL_SYS (getpagesize, int, (void));
+# endif
+# if !@HAVE_GETPAGESIZE@
+# if !defined getpagesize
+/* This is for POSIX systems. */
+# if !defined _gl_getpagesize && defined _SC_PAGESIZE
+# if ! (defined __VMS && __VMS_VER < 70000000)
+# define _gl_getpagesize() sysconf (_SC_PAGESIZE)
+# endif
+# endif
+/* This is for older VMS. */
+# if !defined _gl_getpagesize && defined __VMS
+# ifdef __ALPHA
+# define _gl_getpagesize() 8192
+# else
+# define _gl_getpagesize() 512
+# endif
+# endif
+/* This is for BeOS. */
+# if !defined _gl_getpagesize && @HAVE_OS_H@
+# include
+# if defined B_PAGE_SIZE
+# define _gl_getpagesize() B_PAGE_SIZE
+# endif
+# endif
+/* This is for AmigaOS4.0. */
+# if !defined _gl_getpagesize && defined __amigaos4__
+# define _gl_getpagesize() 2048
+# endif
+/* This is for older Unix systems. */
+# if !defined _gl_getpagesize && @HAVE_SYS_PARAM_H@
+# include
+# ifdef EXEC_PAGESIZE
+# define _gl_getpagesize() EXEC_PAGESIZE
+# else
+# ifdef NBPG
+# ifndef CLSIZE
+# define CLSIZE 1
+# endif
+# define _gl_getpagesize() (NBPG * CLSIZE)
+# else
+# ifdef NBPC
+# define _gl_getpagesize() NBPC
+# endif
+# endif
+# endif
+# endif
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# define getpagesize() _gl_getpagesize ()
+# else
+# if !GNULIB_defined_getpagesize_function
+_GL_UNISTD_INLINE int
+getpagesize ()
+{
+ return _gl_getpagesize ();
+}
+# define GNULIB_defined_getpagesize_function 1
+# endif
+# endif
+# endif
+# endif
+/* Need to cast, because on Cygwin 1.5.x systems, the return type is size_t. */
+_GL_CXXALIAS_SYS_CAST (getpagesize, int, (void));
+# endif
+# if @HAVE_DECL_GETPAGESIZE@
+_GL_CXXALIASWARN (getpagesize);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef getpagesize
+# if HAVE_RAW_DECL_GETPAGESIZE
+_GL_WARN_ON_USE (getpagesize, "getpagesize is unportable - "
+ "use gnulib module getpagesize for portability");
+# endif
+#endif
+
+
+#if @GNULIB_GETPASS@
+/* Function getpass() from module 'getpass':
+ Read a password from /dev/tty or stdin.
+ Function getpass() from module 'getpass-gnu':
+ Read a password of arbitrary length from /dev/tty or stdin. */
+# if (@GNULIB_GETPASS@ && @REPLACE_GETPASS@) \
+ || (@GNULIB_GETPASS_GNU@ && @REPLACE_GETPASS_FOR_GETPASS_GNU@)
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef getpass
+# define getpass rpl_getpass
+# endif
+_GL_FUNCDECL_RPL (getpass, char *, (const char *prompt)
+ _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (getpass, char *, (const char *prompt));
+# else
+# if !@HAVE_GETPASS@
+_GL_FUNCDECL_SYS (getpass, char *, (const char *prompt)
+ _GL_ARG_NONNULL ((1)));
+# endif
+_GL_CXXALIAS_SYS (getpass, char *, (const char *prompt));
+# endif
+_GL_CXXALIASWARN (getpass);
+#elif defined GNULIB_POSIXCHECK
+# undef getpass
+# if HAVE_RAW_DECL_GETPASS
+_GL_WARN_ON_USE (getpass, "getpass is unportable - "
+ "use gnulib module getpass or getpass-gnu for portability");
+# endif
+#endif
+
+
+#if @GNULIB_MDA_GETPID@
+/* On native Windows, map 'getpid' to '_getpid', so that -loldnames is not
+ required. In C++ with GNULIB_NAMESPACE, avoid differences between
+ platforms by defining GNULIB_NAMESPACE::getpid always. */
+# if defined _WIN32 && !defined __CYGWIN__
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef getpid
+# define getpid _getpid
+# endif
+_GL_CXXALIAS_MDA (getpid, int, (void));
+# else
+_GL_CXXALIAS_SYS (getpid, pid_t, (void));
+# endif
+_GL_CXXALIASWARN (getpid);
+#endif
+
+
+#if @GNULIB_GETUSERSHELL@
+/* Return the next valid login shell on the system, or NULL when the end of
+ the list has been reached. */
+# if !@HAVE_DECL_GETUSERSHELL@
+_GL_FUNCDECL_SYS (getusershell, char *, (void));
+# endif
+_GL_CXXALIAS_SYS (getusershell, char *, (void));
+_GL_CXXALIASWARN (getusershell);
+#elif defined GNULIB_POSIXCHECK
+# undef getusershell
+# if HAVE_RAW_DECL_GETUSERSHELL
+_GL_WARN_ON_USE (getusershell, "getusershell is unportable - "
+ "use gnulib module getusershell for portability");
+# endif
+#endif
+
+#if @GNULIB_GETUSERSHELL@
+/* Rewind to pointer that is advanced at each getusershell() call. */
+# if !@HAVE_DECL_GETUSERSHELL@
+_GL_FUNCDECL_SYS (setusershell, void, (void));
+# endif
+_GL_CXXALIAS_SYS (setusershell, void, (void));
+_GL_CXXALIASWARN (setusershell);
+#elif defined GNULIB_POSIXCHECK
+# undef setusershell
+# if HAVE_RAW_DECL_SETUSERSHELL
+_GL_WARN_ON_USE (setusershell, "setusershell is unportable - "
+ "use gnulib module getusershell for portability");
+# endif
+#endif
+
+#if @GNULIB_GETUSERSHELL@
+/* Free the pointer that is advanced at each getusershell() call and
+ associated resources. */
+# if !@HAVE_DECL_GETUSERSHELL@
+_GL_FUNCDECL_SYS (endusershell, void, (void));
+# endif
+_GL_CXXALIAS_SYS (endusershell, void, (void));
+_GL_CXXALIASWARN (endusershell);
+#elif defined GNULIB_POSIXCHECK
+# undef endusershell
+# if HAVE_RAW_DECL_ENDUSERSHELL
+_GL_WARN_ON_USE (endusershell, "endusershell is unportable - "
+ "use gnulib module getusershell for portability");
+# endif
+#endif
+
+
+#if @GNULIB_GROUP_MEMBER@
+/* Determine whether group id is in calling user's group list. */
+# if !@HAVE_GROUP_MEMBER@
+_GL_FUNCDECL_SYS (group_member, int, (gid_t gid));
+# endif
+_GL_CXXALIAS_SYS (group_member, int, (gid_t gid));
+_GL_CXXALIASWARN (group_member);
+#elif defined GNULIB_POSIXCHECK
+# undef group_member
+# if HAVE_RAW_DECL_GROUP_MEMBER
+_GL_WARN_ON_USE (group_member, "group_member is unportable - "
+ "use gnulib module group-member for portability");
+# endif
+#endif
+
+
+#if @GNULIB_ISATTY@
+# if @REPLACE_ISATTY@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef isatty
+# define isatty rpl_isatty
+# endif
+# define GNULIB_defined_isatty 1
+_GL_FUNCDECL_RPL (isatty, int, (int fd));
+_GL_CXXALIAS_RPL (isatty, int, (int fd));
+# elif defined _WIN32 && !defined __CYGWIN__
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef isatty
+# define isatty _isatty
+# endif
+_GL_CXXALIAS_MDA (isatty, int, (int fd));
+# else
+_GL_CXXALIAS_SYS (isatty, int, (int fd));
+# endif
+_GL_CXXALIASWARN (isatty);
+#elif defined GNULIB_POSIXCHECK
+# undef isatty
+# if HAVE_RAW_DECL_ISATTY
+_GL_WARN_ON_USE (isatty, "isatty has portability problems on native Windows - "
+ "use gnulib module isatty for portability");
+# endif
+#elif @GNULIB_MDA_ISATTY@
+/* On native Windows, map 'isatty' to '_isatty', so that -loldnames is not
+ required. In C++ with GNULIB_NAMESPACE, avoid differences between
+ platforms by defining GNULIB_NAMESPACE::isatty always. */
+# if defined _WIN32 && !defined __CYGWIN__
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef isatty
+# define isatty _isatty
+# endif
+_GL_CXXALIAS_MDA (isatty, int, (int fd));
+# else
+_GL_CXXALIAS_SYS (isatty, int, (int fd));
+# endif
+_GL_CXXALIASWARN (isatty);
+#endif
+
+
+#if @GNULIB_LCHOWN@
+/* Change the owner of FILE to UID (if UID is not -1) and the group of FILE
+ to GID (if GID is not -1). Do not follow symbolic links.
+ Return 0 if successful, otherwise -1 and errno set.
+ See the POSIX:2008 specification
+ . */
+# if @REPLACE_LCHOWN@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef lchown
+# define lchown rpl_lchown
+# endif
+_GL_FUNCDECL_RPL (lchown, int, (char const *file, uid_t owner, gid_t group)
+ _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (lchown, int, (char const *file, uid_t owner, gid_t group));
+# else
+# if !@HAVE_LCHOWN@
+_GL_FUNCDECL_SYS (lchown, int, (char const *file, uid_t owner, gid_t group)
+ _GL_ARG_NONNULL ((1)));
+# endif
+_GL_CXXALIAS_SYS (lchown, int, (char const *file, uid_t owner, gid_t group));
+# endif
+_GL_CXXALIASWARN (lchown);
+#elif defined GNULIB_POSIXCHECK
+# undef lchown
+# if HAVE_RAW_DECL_LCHOWN
+_GL_WARN_ON_USE (lchown, "lchown is unportable to pre-POSIX.1-2001 systems - "
+ "use gnulib module lchown for portability");
+# endif
+#endif
+
+
+#if @GNULIB_LINK@
+/* Create a new hard link for an existing file.
+ Return 0 if successful, otherwise -1 and errno set.
+ See POSIX:2008 specification
+ . */
+# if @REPLACE_LINK@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# define link rpl_link
+# endif
+_GL_FUNCDECL_RPL (link, int, (const char *path1, const char *path2)
+ _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (link, int, (const char *path1, const char *path2));
+# else
+# if !@HAVE_LINK@
+_GL_FUNCDECL_SYS (link, int, (const char *path1, const char *path2)
+ _GL_ARG_NONNULL ((1, 2)));
+# endif
+_GL_CXXALIAS_SYS (link, int, (const char *path1, const char *path2));
+# endif
+_GL_CXXALIASWARN (link);
+#elif defined GNULIB_POSIXCHECK
+# undef link
+# if HAVE_RAW_DECL_LINK
+_GL_WARN_ON_USE (link, "link is unportable - "
+ "use gnulib module link for portability");
+# endif
+#endif
+
+
+#if @GNULIB_LINKAT@
+/* Create a new hard link for an existing file, relative to two
+ directories. FLAG controls whether symlinks are followed.
+ Return 0 if successful, otherwise -1 and errno set. */
+# if @REPLACE_LINKAT@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef linkat
+# define linkat rpl_linkat
+# endif
+_GL_FUNCDECL_RPL (linkat, int,
+ (int fd1, const char *path1, int fd2, const char *path2,
+ int flag)
+ _GL_ARG_NONNULL ((2, 4)));
+_GL_CXXALIAS_RPL (linkat, int,
+ (int fd1, const char *path1, int fd2, const char *path2,
+ int flag));
+# else
+# if !@HAVE_LINKAT@
+_GL_FUNCDECL_SYS (linkat, int,
+ (int fd1, const char *path1, int fd2, const char *path2,
+ int flag)
+ _GL_ARG_NONNULL ((2, 4)));
+# endif
+_GL_CXXALIAS_SYS (linkat, int,
+ (int fd1, const char *path1, int fd2, const char *path2,
+ int flag));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (linkat);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef linkat
+# if HAVE_RAW_DECL_LINKAT
+_GL_WARN_ON_USE (linkat, "linkat is unportable - "
+ "use gnulib module linkat for portability");
+# endif
+#endif
+
+
+#if @GNULIB_LSEEK@
+/* Set the offset of FD relative to SEEK_SET, SEEK_CUR, or SEEK_END.
+ Return the new offset if successful, otherwise -1 and errno set.
+ See the POSIX:2008 specification
+ . */
+# if @REPLACE_LSEEK@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# define lseek rpl_lseek
+# endif
+_GL_FUNCDECL_RPL (lseek, off_t, (int fd, off_t offset, int whence));
+_GL_CXXALIAS_RPL (lseek, off_t, (int fd, off_t offset, int whence));
+# elif defined _WIN32 && !defined __CYGWIN__
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef lseek
+# define lseek _lseek
+# endif
+_GL_CXXALIAS_MDA (lseek, off_t, (int fd, off_t offset, int whence));
+# else
+_GL_CXXALIAS_SYS (lseek, off_t, (int fd, off_t offset, int whence));
+# endif
+_GL_CXXALIASWARN (lseek);
+#elif defined GNULIB_POSIXCHECK
+# undef lseek
+# if HAVE_RAW_DECL_LSEEK
+_GL_WARN_ON_USE (lseek, "lseek does not fail with ESPIPE on pipes on some "
+ "systems - use gnulib module lseek for portability");
+# endif
+#elif @GNULIB_MDA_LSEEK@
+/* On native Windows, map 'lseek' to '_lseek', so that -loldnames is not
+ required. In C++ with GNULIB_NAMESPACE, avoid differences between
+ platforms by defining GNULIB_NAMESPACE::lseek always. */
+# if defined _WIN32 && !defined __CYGWIN__
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef lseek
+# define lseek _lseek
+# endif
+_GL_CXXALIAS_MDA (lseek, long, (int fd, long offset, int whence));
+# else
+_GL_CXXALIAS_SYS (lseek, off_t, (int fd, off_t offset, int whence));
+# endif
+_GL_CXXALIASWARN (lseek);
+#endif
+
+
+#if @GNULIB_PIPE@
+/* Create a pipe, defaulting to O_BINARY mode.
+ Store the read-end as fd[0] and the write-end as fd[1].
+ Return 0 upon success, or -1 with errno set upon failure. */
+# if !@HAVE_PIPE@
+_GL_FUNCDECL_SYS (pipe, int, (int fd[2]) _GL_ARG_NONNULL ((1)));
+# endif
+_GL_CXXALIAS_SYS (pipe, int, (int fd[2]));
+_GL_CXXALIASWARN (pipe);
+#elif defined GNULIB_POSIXCHECK
+# undef pipe
+# if HAVE_RAW_DECL_PIPE
+_GL_WARN_ON_USE (pipe, "pipe is unportable - "
+ "use gnulib module pipe-posix for portability");
+# endif
+#endif
+
+
+#if @GNULIB_PIPE2@
+/* Create a pipe, applying the given flags when opening the read-end of the
+ pipe and the write-end of the pipe.
+ The flags are a bitmask, possibly including O_CLOEXEC (defined in )
+ and O_TEXT, O_BINARY (defined in "binary-io.h").
+ Store the read-end as fd[0] and the write-end as fd[1].
+ Return 0 upon success, or -1 with errno set upon failure.
+ See also the Linux man page at
+ . */
+# if @REPLACE_PIPE2@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef pipe2
+# define pipe2 rpl_pipe2
+# endif
+_GL_FUNCDECL_RPL (pipe2, int, (int fd[2], int flags) _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (pipe2, int, (int fd[2], int flags));
+# else
+_GL_FUNCDECL_SYS (pipe2, int, (int fd[2], int flags) _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_SYS (pipe2, int, (int fd[2], int flags));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pipe2);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pipe2
+# if HAVE_RAW_DECL_PIPE2
+_GL_WARN_ON_USE (pipe2, "pipe2 is unportable - "
+ "use gnulib module pipe2 for portability");
+# endif
+#endif
+
+
+#if @GNULIB_PREAD@
+/* Read at most BUFSIZE bytes from FD into BUF, starting at OFFSET.
+ Return the number of bytes placed into BUF if successful, otherwise
+ set errno and return -1. 0 indicates EOF.
+ See the POSIX:2008 specification
+ . */
+# if @REPLACE_PREAD@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef pread
+# define pread rpl_pread
+# endif
+_GL_FUNCDECL_RPL (pread, ssize_t,
+ (int fd, void *buf, size_t bufsize, off_t offset)
+ _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (pread, ssize_t,
+ (int fd, void *buf, size_t bufsize, off_t offset));
+# else
+# if !@HAVE_PREAD@
+_GL_FUNCDECL_SYS (pread, ssize_t,
+ (int fd, void *buf, size_t bufsize, off_t offset)
+ _GL_ARG_NONNULL ((2)));
+# endif
+_GL_CXXALIAS_SYS (pread, ssize_t,
+ (int fd, void *buf, size_t bufsize, off_t offset));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pread);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pread
+# if HAVE_RAW_DECL_PREAD
+_GL_WARN_ON_USE (pread, "pread is unportable - "
+ "use gnulib module pread for portability");
+# endif
+#endif
+
+
+#if @GNULIB_PWRITE@
+/* Write at most BUFSIZE bytes from BUF into FD, starting at OFFSET.
+ Return the number of bytes written if successful, otherwise
+ set errno and return -1. 0 indicates nothing written. See the
+ POSIX:2008 specification
+ . */
+# if @REPLACE_PWRITE@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef pwrite
+# define pwrite rpl_pwrite
+# endif
+_GL_FUNCDECL_RPL (pwrite, ssize_t,
+ (int fd, const void *buf, size_t bufsize, off_t offset)
+ _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (pwrite, ssize_t,
+ (int fd, const void *buf, size_t bufsize, off_t offset));
+# else
+# if !@HAVE_PWRITE@
+_GL_FUNCDECL_SYS (pwrite, ssize_t,
+ (int fd, const void *buf, size_t bufsize, off_t offset)
+ _GL_ARG_NONNULL ((2)));
+# endif
+_GL_CXXALIAS_SYS (pwrite, ssize_t,
+ (int fd, const void *buf, size_t bufsize, off_t offset));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (pwrite);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef pwrite
+# if HAVE_RAW_DECL_PWRITE
+_GL_WARN_ON_USE (pwrite, "pwrite is unportable - "
+ "use gnulib module pwrite for portability");
+# endif
+#endif
+
+
+#if @GNULIB_READ@
+/* Read up to COUNT bytes from file descriptor FD into the buffer starting
+ at BUF. See the POSIX:2008 specification
+ . */
+# if @REPLACE_READ@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef read
+# define read rpl_read
+# endif
+_GL_FUNCDECL_RPL (read, ssize_t, (int fd, void *buf, size_t count)
+ _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (read, ssize_t, (int fd, void *buf, size_t count));
+# elif defined _WIN32 && !defined __CYGWIN__
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef read
+# define read _read
+# endif
+_GL_CXXALIAS_MDA (read, ssize_t, (int fd, void *buf, size_t count));
+# else
+_GL_CXXALIAS_SYS (read, ssize_t, (int fd, void *buf, size_t count));
+# endif
+_GL_CXXALIASWARN (read);
+#elif @GNULIB_MDA_READ@
+/* On native Windows, map 'read' to '_read', so that -loldnames is not
+ required. In C++ with GNULIB_NAMESPACE, avoid differences between
+ platforms by defining GNULIB_NAMESPACE::read always. */
+# if defined _WIN32 && !defined __CYGWIN__
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef read
+# define read _read
+# endif
+# ifdef __MINGW32__
+_GL_CXXALIAS_MDA (read, int, (int fd, void *buf, unsigned int count));
+# else
+_GL_CXXALIAS_MDA (read, ssize_t, (int fd, void *buf, unsigned int count));
+# endif
+# else
+_GL_CXXALIAS_SYS (read, ssize_t, (int fd, void *buf, size_t count));
+# endif
+_GL_CXXALIASWARN (read);
+#endif
+
+
+#if @GNULIB_READLINK@
+/* Read the contents of the symbolic link FILE and place the first BUFSIZE
+ bytes of it into BUF. Return the number of bytes placed into BUF if
+ successful, otherwise -1 and errno set.
+ See the POSIX:2008 specification
+ . */
+# if @REPLACE_READLINK@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# define readlink rpl_readlink
+# endif
+_GL_FUNCDECL_RPL (readlink, ssize_t,
+ (const char *restrict file,
+ char *restrict buf, size_t bufsize)
+ _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (readlink, ssize_t,
+ (const char *restrict file,
+ char *restrict buf, size_t bufsize));
+# else
+# if !@HAVE_READLINK@
+_GL_FUNCDECL_SYS (readlink, ssize_t,
+ (const char *restrict file,
+ char *restrict buf, size_t bufsize)
+ _GL_ARG_NONNULL ((1, 2)));
+# endif
+_GL_CXXALIAS_SYS (readlink, ssize_t,
+ (const char *restrict file,
+ char *restrict buf, size_t bufsize));
+# endif
+_GL_CXXALIASWARN (readlink);
+#elif defined GNULIB_POSIXCHECK
+# undef readlink
+# if HAVE_RAW_DECL_READLINK
+_GL_WARN_ON_USE (readlink, "readlink is unportable - "
+ "use gnulib module readlink for portability");
+# endif
+#endif
+
+
+#if @GNULIB_READLINKAT@
+# if @REPLACE_READLINKAT@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# define readlinkat rpl_readlinkat
+# endif
+_GL_FUNCDECL_RPL (readlinkat, ssize_t,
+ (int fd, char const *restrict file,
+ char *restrict buf, size_t len)
+ _GL_ARG_NONNULL ((2, 3)));
+_GL_CXXALIAS_RPL (readlinkat, ssize_t,
+ (int fd, char const *restrict file,
+ char *restrict buf, size_t len));
+# else
+# if !@HAVE_READLINKAT@
+_GL_FUNCDECL_SYS (readlinkat, ssize_t,
+ (int fd, char const *restrict file,
+ char *restrict buf, size_t len)
+ _GL_ARG_NONNULL ((2, 3)));
+# endif
+_GL_CXXALIAS_SYS (readlinkat, ssize_t,
+ (int fd, char const *restrict file,
+ char *restrict buf, size_t len));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (readlinkat);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef readlinkat
+# if HAVE_RAW_DECL_READLINKAT
+_GL_WARN_ON_USE (readlinkat, "readlinkat is not portable - "
+ "use gnulib module readlinkat for portability");
+# endif
+#endif
+
+
+#if @GNULIB_RMDIR@
+/* Remove the directory DIR. */
+# if @REPLACE_RMDIR@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# define rmdir rpl_rmdir
+# endif
+_GL_FUNCDECL_RPL (rmdir, int, (char const *name) _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (rmdir, int, (char const *name));
+# elif defined _WIN32 && !defined __CYGWIN__
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef rmdir
+# define rmdir _rmdir
+# endif
+_GL_CXXALIAS_MDA (rmdir, int, (char const *name));
+# else
+_GL_CXXALIAS_SYS (rmdir, int, (char const *name));
+# endif
+_GL_CXXALIASWARN (rmdir);
+#elif defined GNULIB_POSIXCHECK
+# undef rmdir
+# if HAVE_RAW_DECL_RMDIR
+_GL_WARN_ON_USE (rmdir, "rmdir is unportable - "
+ "use gnulib module rmdir for portability");
+# endif
+#elif @GNULIB_MDA_RMDIR@
+/* On native Windows, map 'rmdir' to '_rmdir', so that -loldnames is not
+ required. In C++ with GNULIB_NAMESPACE, avoid differences between
+ platforms by defining GNULIB_NAMESPACE::rmdir always. */
+# if defined _WIN32 && !defined __CYGWIN__
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef rmdir
+# define rmdir _rmdir
+# endif
+_GL_CXXALIAS_MDA (rmdir, int, (char const *name));
+# else
+_GL_CXXALIAS_SYS (rmdir, int, (char const *name));
+# endif
+_GL_CXXALIASWARN (rmdir);
+#endif
+
+
+#if @GNULIB_SETHOSTNAME@
+/* Set the host name of the machine.
+ The host name may or may not be fully qualified.
+
+ Put LEN bytes of NAME into the host name.
+ Return 0 if successful, otherwise, set errno and return -1.
+
+ Platforms with no ability to set the hostname return -1 and set
+ errno = ENOSYS. */
+# if @REPLACE_SETHOSTNAME@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef sethostname
+# define sethostname rpl_sethostname
+# endif
+_GL_FUNCDECL_RPL (sethostname, int, (const char *name, size_t len)
+ _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (sethostname, int, (const char *name, size_t len));
+# else
+# if !@HAVE_SETHOSTNAME@ || !@HAVE_DECL_SETHOSTNAME@
+_GL_FUNCDECL_SYS (sethostname, int, (const char *name, size_t len)
+ _GL_ARG_NONNULL ((1)));
+# endif
+/* Need to cast, because on Solaris 11 2011-10, Mac OS X 10.5, IRIX 6.5
+ and FreeBSD 6.4 the second parameter is int. On Solaris 11
+ 2011-10, the first parameter is not const. */
+_GL_CXXALIAS_SYS_CAST (sethostname, int, (const char *name, size_t len));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (sethostname);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef sethostname
+# if HAVE_RAW_DECL_SETHOSTNAME
+_GL_WARN_ON_USE (sethostname, "sethostname is unportable - "
+ "use gnulib module sethostname for portability");
+# endif
+#endif
+
+
+#if @GNULIB_SLEEP@
+/* Pause the execution of the current thread for N seconds.
+ Returns the number of seconds left to sleep.
+ See the POSIX:2008 specification
+ . */
+# if @REPLACE_SLEEP@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef sleep
+# define sleep rpl_sleep
+# endif
+_GL_FUNCDECL_RPL (sleep, unsigned int, (unsigned int n));
+_GL_CXXALIAS_RPL (sleep, unsigned int, (unsigned int n));
+# else
+# if !@HAVE_SLEEP@
+_GL_FUNCDECL_SYS (sleep, unsigned int, (unsigned int n));
+# endif
+_GL_CXXALIAS_SYS (sleep, unsigned int, (unsigned int n));
+# endif
+_GL_CXXALIASWARN (sleep);
+#elif defined GNULIB_POSIXCHECK
+# undef sleep
+# if HAVE_RAW_DECL_SLEEP
+_GL_WARN_ON_USE (sleep, "sleep is unportable - "
+ "use gnulib module sleep for portability");
+# endif
+#endif
+
+
+#if @GNULIB_MDA_SWAB@
+/* On native Windows, map 'swab' to '_swab', so that -loldnames is not
+ required. In C++ with GNULIB_NAMESPACE, avoid differences between
+ platforms by defining GNULIB_NAMESPACE::swab always. */
+# if defined _WIN32 && !defined __CYGWIN__
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef swab
+# define swab _swab
+# endif
+/* Need to cast, because in old mingw the arguments are
+ (const char *from, char *to, size_t n). */
+_GL_CXXALIAS_MDA_CAST (swab, void, (char *from, char *to, int n));
+# else
+# if defined __hpux /* HP-UX */
+_GL_CXXALIAS_SYS (swab, void, (const char *from, char *to, int n));
+# elif defined __sun && (defined __SunOS_5_10 || defined __XOPEN_OR_POSIX) && !defined _XPG4 /* Solaris */
+_GL_CXXALIAS_SYS (swab, void, (const char *from, char *to, ssize_t n));
+# else
+_GL_CXXALIAS_SYS (swab, void, (const void *from, void *to, ssize_t n));
+# endif
+# endif
+_GL_CXXALIASWARN (swab);
+#endif
+
+
+#if @GNULIB_SYMLINK@
+# if @REPLACE_SYMLINK@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef symlink
+# define symlink rpl_symlink
+# endif
+_GL_FUNCDECL_RPL (symlink, int, (char const *contents, char const *file)
+ _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (symlink, int, (char const *contents, char const *file));
+# else
+# if !@HAVE_SYMLINK@
+_GL_FUNCDECL_SYS (symlink, int, (char const *contents, char const *file)
+ _GL_ARG_NONNULL ((1, 2)));
+# endif
+_GL_CXXALIAS_SYS (symlink, int, (char const *contents, char const *file));
+# endif
+_GL_CXXALIASWARN (symlink);
+#elif defined GNULIB_POSIXCHECK
+# undef symlink
+# if HAVE_RAW_DECL_SYMLINK
+_GL_WARN_ON_USE (symlink, "symlink is not portable - "
+ "use gnulib module symlink for portability");
+# endif
+#endif
+
+
+#if @GNULIB_SYMLINKAT@
+# if @REPLACE_SYMLINKAT@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef symlinkat
+# define symlinkat rpl_symlinkat
+# endif
+_GL_FUNCDECL_RPL (symlinkat, int,
+ (char const *contents, int fd, char const *file)
+ _GL_ARG_NONNULL ((1, 3)));
+_GL_CXXALIAS_RPL (symlinkat, int,
+ (char const *contents, int fd, char const *file));
+# else
+# if !@HAVE_SYMLINKAT@
+_GL_FUNCDECL_SYS (symlinkat, int,
+ (char const *contents, int fd, char const *file)
+ _GL_ARG_NONNULL ((1, 3)));
+# endif
+_GL_CXXALIAS_SYS (symlinkat, int,
+ (char const *contents, int fd, char const *file));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (symlinkat);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef symlinkat
+# if HAVE_RAW_DECL_SYMLINKAT
+_GL_WARN_ON_USE (symlinkat, "symlinkat is not portable - "
+ "use gnulib module symlinkat for portability");
+# endif
+#endif
+
+
+#if @GNULIB_TRUNCATE@
+/* Change the size of the file designated by FILENAME to become equal to LENGTH.
+ Return 0 if successful, otherwise -1 and errno set.
+ See the POSIX:2008 specification
+ . */
+# if @REPLACE_TRUNCATE@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef truncate
+# define truncate rpl_truncate
+# endif
+_GL_FUNCDECL_RPL (truncate, int, (const char *filename, off_t length)
+ _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (truncate, int, (const char *filename, off_t length));
+# else
+# if !@HAVE_DECL_TRUNCATE@
+_GL_FUNCDECL_SYS (truncate, int, (const char *filename, off_t length)
+ _GL_ARG_NONNULL ((1)));
+# endif
+_GL_CXXALIAS_SYS (truncate, int, (const char *filename, off_t length));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (truncate);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef truncate
+# if HAVE_RAW_DECL_TRUNCATE
+_GL_WARN_ON_USE (truncate, "truncate is unportable - "
+ "use gnulib module truncate for portability");
+# endif
+#endif
+
+
+#if @GNULIB_TTYNAME_R@
+/* Store at most BUFLEN characters of the pathname of the terminal FD is
+ open on in BUF. Return 0 on success, otherwise an error number. */
+# if @REPLACE_TTYNAME_R@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef ttyname_r
+# define ttyname_r rpl_ttyname_r
+# endif
+_GL_FUNCDECL_RPL (ttyname_r, int,
+ (int fd, char *buf, size_t buflen) _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (ttyname_r, int,
+ (int fd, char *buf, size_t buflen));
+# else
+# if !@HAVE_DECL_TTYNAME_R@
+_GL_FUNCDECL_SYS (ttyname_r, int,
+ (int fd, char *buf, size_t buflen) _GL_ARG_NONNULL ((2)));
+# endif
+_GL_CXXALIAS_SYS (ttyname_r, int,
+ (int fd, char *buf, size_t buflen));
+# endif
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (ttyname_r);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef ttyname_r
+# if HAVE_RAW_DECL_TTYNAME_R
+_GL_WARN_ON_USE (ttyname_r, "ttyname_r is not portable - "
+ "use gnulib module ttyname_r for portability");
+# endif
+#endif
+
+
+#if @GNULIB_UNLINK@
+# if @REPLACE_UNLINK@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef unlink
+# define unlink rpl_unlink
+# endif
+_GL_FUNCDECL_RPL (unlink, int, (char const *file) _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (unlink, int, (char const *file));
+# elif defined _WIN32 && !defined __CYGWIN__
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef unlink
+# define unlink _unlink
+# endif
+_GL_CXXALIAS_MDA (unlink, int, (char const *file));
+# else
+_GL_CXXALIAS_SYS (unlink, int, (char const *file));
+# endif
+_GL_CXXALIASWARN (unlink);
+#elif defined GNULIB_POSIXCHECK
+# undef unlink
+# if HAVE_RAW_DECL_UNLINK
+_GL_WARN_ON_USE (unlink, "unlink is not portable - "
+ "use gnulib module unlink for portability");
+# endif
+#elif @GNULIB_MDA_UNLINK@
+/* On native Windows, map 'unlink' to '_unlink', so that -loldnames is not
+ required. In C++ with GNULIB_NAMESPACE, avoid differences between
+ platforms by defining GNULIB_NAMESPACE::unlink always. */
+# if defined _WIN32 && !defined __CYGWIN__
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef unlink
+# define unlink _unlink
+# endif
+_GL_CXXALIAS_MDA (unlink, int, (char const *file));
+# else
+_GL_CXXALIAS_SYS (unlink, int, (char const *file));
+# endif
+_GL_CXXALIASWARN (unlink);
+#endif
+
+
+#if @GNULIB_UNLINKAT@
+# if @REPLACE_UNLINKAT@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef unlinkat
+# define unlinkat rpl_unlinkat
+# endif
+_GL_FUNCDECL_RPL (unlinkat, int, (int fd, char const *file, int flag)
+ _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (unlinkat, int, (int fd, char const *file, int flag));
+# else
+# if !@HAVE_UNLINKAT@
+_GL_FUNCDECL_SYS (unlinkat, int, (int fd, char const *file, int flag)
+ _GL_ARG_NONNULL ((2)));
+# endif
+_GL_CXXALIAS_SYS (unlinkat, int, (int fd, char const *file, int flag));
+# endif
+_GL_CXXALIASWARN (unlinkat);
+#elif defined GNULIB_POSIXCHECK
+# undef unlinkat
+# if HAVE_RAW_DECL_UNLINKAT
+_GL_WARN_ON_USE (unlinkat, "unlinkat is not portable - "
+ "use gnulib module unlinkat for portability");
+# endif
+#endif
+
+
+#if @GNULIB_USLEEP@
+/* Pause the execution of the current thread for N microseconds.
+ Returns 0 on completion, or -1 on range error.
+ See the POSIX:2001 specification
+ . */
+# if @REPLACE_USLEEP@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef usleep
+# define usleep rpl_usleep
+# endif
+_GL_FUNCDECL_RPL (usleep, int, (useconds_t n));
+_GL_CXXALIAS_RPL (usleep, int, (useconds_t n));
+# else
+# if !@HAVE_USLEEP@
+_GL_FUNCDECL_SYS (usleep, int, (useconds_t n));
+# endif
+/* Need to cast, because on Haiku, the first parameter is
+ unsigned int n. */
+_GL_CXXALIAS_SYS_CAST (usleep, int, (useconds_t n));
+# endif
+_GL_CXXALIASWARN (usleep);
+#elif defined GNULIB_POSIXCHECK
+# undef usleep
+# if HAVE_RAW_DECL_USLEEP
+_GL_WARN_ON_USE (usleep, "usleep is unportable - "
+ "use gnulib module usleep for portability");
+# endif
+#endif
+
+
+#if @GNULIB_WRITE@
+/* Write up to COUNT bytes starting at BUF to file descriptor FD.
+ See the POSIX:2008 specification
+ . */
+# if @REPLACE_WRITE@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef write
+# define write rpl_write
+# endif
+_GL_FUNCDECL_RPL (write, ssize_t, (int fd, const void *buf, size_t count)
+ _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (write, ssize_t, (int fd, const void *buf, size_t count));
+# elif defined _WIN32 && !defined __CYGWIN__
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef write
+# define write _write
+# endif
+_GL_CXXALIAS_MDA (write, ssize_t, (int fd, const void *buf, size_t count));
+# else
+_GL_CXXALIAS_SYS (write, ssize_t, (int fd, const void *buf, size_t count));
+# endif
+_GL_CXXALIASWARN (write);
+#elif @GNULIB_MDA_WRITE@
+/* On native Windows, map 'write' to '_write', so that -loldnames is not
+ required. In C++ with GNULIB_NAMESPACE, avoid differences between
+ platforms by defining GNULIB_NAMESPACE::write always. */
+# if defined _WIN32 && !defined __CYGWIN__
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef write
+# define write _write
+# endif
+# ifdef __MINGW32__
+_GL_CXXALIAS_MDA (write, int, (int fd, const void *buf, unsigned int count));
+# else
+_GL_CXXALIAS_MDA (write, ssize_t, (int fd, const void *buf, unsigned int count));
+# endif
+# else
+_GL_CXXALIAS_SYS (write, ssize_t, (int fd, const void *buf, size_t count));
+# endif
+_GL_CXXALIASWARN (write);
+#endif
+
+_GL_INLINE_HEADER_END
+
+#endif /* _@GUARD_PREFIX@_UNISTD_H */
+#endif /* _GL_INCLUDING_UNISTD_H */
+#endif /* _@GUARD_PREFIX@_UNISTD_H */
diff --git a/gnulib/warn-on-use.h b/gnulib/warn-on-use.h
new file mode 100644
index 0000000..3075603
--- /dev/null
+++ b/gnulib/warn-on-use.h
@@ -0,0 +1,149 @@
+/* A C macro for emitting warnings if a function is used.
+ Copyright (C) 2010-2023 Free Software Foundation, Inc.
+
+ This program is free software: you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published
+ by the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with this program. If not, see . */
+
+/* _GL_WARN_ON_USE (function, "literal string") issues a declaration
+ for FUNCTION which will then trigger a compiler warning containing
+ the text of "literal string" anywhere that function is called, if
+ supported by the compiler. If the compiler does not support this
+ feature, the macro expands to an unused extern declaration.
+
+ _GL_WARN_ON_USE_ATTRIBUTE ("literal string") expands to the
+ attribute used in _GL_WARN_ON_USE. If the compiler does not support
+ this feature, it expands to empty.
+
+ These macros are useful for marking a function as a potential
+ portability trap, with the intent that "literal string" include
+ instructions on the replacement function that should be used
+ instead.
+ _GL_WARN_ON_USE is for functions with 'extern' linkage.
+ _GL_WARN_ON_USE_ATTRIBUTE is for functions with 'static' or 'inline'
+ linkage.
+
+ However, one of the reasons that a function is a portability trap is
+ if it has the wrong signature. Declaring FUNCTION with a different
+ signature in C is a compilation error, so this macro must use the
+ same type as any existing declaration so that programs that avoid
+ the problematic FUNCTION do not fail to compile merely because they
+ included a header that poisoned the function. But this implies that
+ _GL_WARN_ON_USE is only safe to use if FUNCTION is known to already
+ have a declaration. Use of this macro implies that there must not
+ be any other macro hiding the declaration of FUNCTION; but
+ undefining FUNCTION first is part of the poisoning process anyway
+ (although for symbols that are provided only via a macro, the result
+ is a compilation error rather than a warning containing
+ "literal string"). Also note that in C++, it is only safe to use if
+ FUNCTION has no overloads.
+
+ For an example, it is possible to poison 'getline' by:
+ - adding a call to gl_WARN_ON_USE_PREPARE([[#include ]],
+ [getline]) in configure.ac, which potentially defines
+ HAVE_RAW_DECL_GETLINE
+ - adding this code to a header that wraps the system :
+ #undef getline
+ #if HAVE_RAW_DECL_GETLINE
+ _GL_WARN_ON_USE (getline, "getline is required by POSIX 2008, but"
+ "not universally present; use the gnulib module getline");
+ #endif
+
+ It is not possible to directly poison global variables. But it is
+ possible to write a wrapper accessor function, and poison that
+ (less common usage, like &environ, will cause a compilation error
+ rather than issue the nice warning, but the end result of informing
+ the developer about their portability problem is still achieved):
+ #if HAVE_RAW_DECL_ENVIRON
+ static char ***
+ rpl_environ (void) { return &environ; }
+ _GL_WARN_ON_USE (rpl_environ, "environ is not always properly declared");
+ # undef environ
+ # define environ (*rpl_environ ())
+ #endif
+ or better (avoiding contradictory use of 'static' and 'extern'):
+ #if HAVE_RAW_DECL_ENVIRON
+ static char ***
+ _GL_WARN_ON_USE_ATTRIBUTE ("environ is not always properly declared")
+ rpl_environ (void) { return &environ; }
+ # undef environ
+ # define environ (*rpl_environ ())
+ #endif
+ */
+#ifndef _GL_WARN_ON_USE
+
+# if 4 < __GNUC__ || (__GNUC__ == 4 && 3 <= __GNUC_MINOR__)
+/* A compiler attribute is available in gcc versions 4.3.0 and later. */
+# define _GL_WARN_ON_USE(function, message) \
+_GL_WARN_EXTERN_C __typeof__ (function) function __attribute__ ((__warning__ (message)))
+# define _GL_WARN_ON_USE_ATTRIBUTE(message) \
+ __attribute__ ((__warning__ (message)))
+# elif __clang_major__ >= 4
+/* Another compiler attribute is available in clang. */
+# define _GL_WARN_ON_USE(function, message) \
+_GL_WARN_EXTERN_C __typeof__ (function) function \
+ __attribute__ ((__diagnose_if__ (1, message, "warning")))
+# define _GL_WARN_ON_USE_ATTRIBUTE(message) \
+ __attribute__ ((__diagnose_if__ (1, message, "warning")))
+# elif __GNUC__ >= 3 && GNULIB_STRICT_CHECKING
+/* Verify the existence of the function. */
+# define _GL_WARN_ON_USE(function, message) \
+_GL_WARN_EXTERN_C __typeof__ (function) function
+# define _GL_WARN_ON_USE_ATTRIBUTE(message)
+# else /* Unsupported. */
+# define _GL_WARN_ON_USE(function, message) \
+_GL_WARN_EXTERN_C int _gl_warn_on_use
+# define _GL_WARN_ON_USE_ATTRIBUTE(message)
+# endif
+#endif
+
+/* _GL_WARN_ON_USE_CXX (function, rettype_gcc, rettype_clang, parameters_and_attributes, "message")
+ is like _GL_WARN_ON_USE (function, "message"), except that in C++ mode the
+ function is declared with the given prototype, consisting of return type,
+ parameters, and attributes.
+ This variant is useful for overloaded functions in C++. _GL_WARN_ON_USE does
+ not work in this case. */
+#ifndef _GL_WARN_ON_USE_CXX
+# if !defined __cplusplus
+# define _GL_WARN_ON_USE_CXX(function,rettype_gcc,rettype_clang,parameters_and_attributes,msg) \
+ _GL_WARN_ON_USE (function, msg)
+# else
+# if 4 < __GNUC__ || (__GNUC__ == 4 && 3 <= __GNUC_MINOR__)
+/* A compiler attribute is available in gcc versions 4.3.0 and later. */
+# define _GL_WARN_ON_USE_CXX(function,rettype_gcc,rettype_clang,parameters_and_attributes,msg) \
+extern rettype_gcc function parameters_and_attributes \
+ __attribute__ ((__warning__ (msg)))
+# elif __clang_major__ >= 4
+/* Another compiler attribute is available in clang. */
+# define _GL_WARN_ON_USE_CXX(function,rettype_gcc,rettype_clang,parameters_and_attributes,msg) \
+extern rettype_clang function parameters_and_attributes \
+ __attribute__ ((__diagnose_if__ (1, msg, "warning")))
+# elif __GNUC__ >= 3 && GNULIB_STRICT_CHECKING
+/* Verify the existence of the function. */
+# define _GL_WARN_ON_USE_CXX(function,rettype_gcc,rettype_clang,parameters_and_attributes,msg) \
+extern rettype_gcc function parameters_and_attributes
+# else /* Unsupported. */
+# define _GL_WARN_ON_USE_CXX(function,rettype_gcc,rettype_clang,parameters_and_attributes,msg) \
+_GL_WARN_EXTERN_C int _gl_warn_on_use
+# endif
+# endif
+#endif
+
+/* _GL_WARN_EXTERN_C declaration;
+ performs the declaration with C linkage. */
+#ifndef _GL_WARN_EXTERN_C
+# if defined __cplusplus
+# define _GL_WARN_EXTERN_C extern "C"
+# else
+# define _GL_WARN_EXTERN_C extern
+# endif
+#endif
diff --git a/m4/gnulib/00gnulib.m4 b/m4/gnulib/00gnulib.m4
new file mode 100644
index 0000000..7fe03e0
--- /dev/null
+++ b/m4/gnulib/00gnulib.m4
@@ -0,0 +1,85 @@
+# 00gnulib.m4 serial 8
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl This file must be named something that sorts before all other
+dnl gnulib-provided .m4 files. It is needed until the clang fix has
+dnl been included in Autoconf.
+
+# The following definitions arrange to use a compiler option
+# -Werror=implicit-function-declaration in AC_CHECK_DECL, when the
+# compiler is clang. Without it, clang implicitly declares "known"
+# library functions in C mode, but not in C++ mode, which would cause
+# Gnulib to omit a declaration and thus later produce an error in C++
+# mode. As of clang 9.0, these "known" functions are identified through
+# LIBBUILTIN invocations in the LLVM source file
+# llvm/tools/clang/include/clang/Basic/Builtins.def.
+# It's not possible to AC_REQUIRE the extra tests from AC_CHECK_DECL,
+# because AC_CHECK_DECL, like other Autoconf built-ins, is not supposed
+# to AC_REQUIRE anything: some configure.ac files have their first
+# AC_CHECK_DECL executed conditionally. Therefore append the extra tests
+# to AC_PROG_CC.
+AC_DEFUN([gl_COMPILER_CLANG],
+[
+dnl AC_REQUIRE([AC_PROG_CC])
+ AC_CACHE_CHECK([whether the compiler is clang],
+ [gl_cv_compiler_clang],
+ [dnl Use _AC_COMPILE_IFELSE instead of AC_EGREP_CPP, to avoid error
+ dnl "circular dependency of AC_LANG_COMPILER(C)" if AC_PROG_CC has
+ dnl not yet been invoked.
+ _AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM([[
+ #ifdef __clang__
+ barfbarf
+ #endif
+ ]],[[]])
+ ],
+ [gl_cv_compiler_clang=no],
+ [gl_cv_compiler_clang=yes])
+ ])
+])
+AC_DEFUN([gl_COMPILER_PREPARE_CHECK_DECL],
+[
+dnl AC_REQUIRE([AC_PROG_CC])
+dnl AC_REQUIRE([gl_COMPILER_CLANG])
+ AC_CACHE_CHECK([for compiler option needed when checking for declarations],
+ [gl_cv_compiler_check_decl_option],
+ [if test $gl_cv_compiler_clang = yes; then
+ dnl Test whether the compiler supports the option
+ dnl '-Werror=implicit-function-declaration'.
+ save_ac_compile="$ac_compile"
+ ac_compile="$ac_compile -Werror=implicit-function-declaration"
+ dnl Use _AC_COMPILE_IFELSE instead of AC_COMPILE_IFELSE, to avoid a
+ dnl warning "AC_COMPILE_IFELSE was called before AC_USE_SYSTEM_EXTENSIONS".
+ _AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]],[[]])],
+ [gl_cv_compiler_check_decl_option='-Werror=implicit-function-declaration'],
+ [gl_cv_compiler_check_decl_option=none])
+ ac_compile="$save_ac_compile"
+ else
+ gl_cv_compiler_check_decl_option=none
+ fi
+ ])
+ if test "x$gl_cv_compiler_check_decl_option" != xnone; then
+ ac_compile_for_check_decl="$ac_compile $gl_cv_compiler_check_decl_option"
+ else
+ ac_compile_for_check_decl="$ac_compile"
+ fi
+])
+dnl Redefine _AC_CHECK_DECL_BODY so that it references ac_compile_for_check_decl
+dnl instead of ac_compile. If, for whatever reason, the override of AC_PROG_CC
+dnl in zzgnulib.m4 is inactive, use the original ac_compile.
+m4_define([_AC_CHECK_DECL_BODY],
+[ ac_save_ac_compile="$ac_compile"
+ if test -n "$ac_compile_for_check_decl"; then
+ ac_compile="$ac_compile_for_check_decl"
+ fi]
+m4_defn([_AC_CHECK_DECL_BODY])[ ac_compile="$ac_save_ac_compile"
+])
+
+# gl_00GNULIB
+# -----------
+# Witness macro that this file has been included. Needed to force
+# Automake to include this file prior to all other gnulib .m4 files.
+AC_DEFUN([gl_00GNULIB])
diff --git a/m4/gnulib/absolute-header.m4 b/m4/gnulib/absolute-header.m4
new file mode 100644
index 0000000..e794764
--- /dev/null
+++ b/m4/gnulib/absolute-header.m4
@@ -0,0 +1,100 @@
+# absolute-header.m4 serial 17
+dnl Copyright (C) 2006-2023 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Derek Price.
+
+# gl_ABSOLUTE_HEADER(HEADER1 HEADER2 ...)
+# ---------------------------------------
+# Find the absolute name of a header file, testing first if the header exists.
+# If the header were sys/inttypes.h, this macro would define
+# ABSOLUTE_SYS_INTTYPES_H to the '""' quoted absolute name of sys/inttypes.h
+# in config.h
+# (e.g. '#define ABSOLUTE_SYS_INTTYPES_H "///usr/include/sys/inttypes.h"').
+# The three "///" are to pacify Sun C 5.8, which otherwise would say
+# "warning: #include of /usr/include/... may be non-portable".
+# Use '""', not '<>', so that the /// cannot be confused with a C99 comment.
+# Note: This macro assumes that the header file is not empty after
+# preprocessing, i.e. it does not only define preprocessor macros but also
+# provides some type/enum definitions or function/variable declarations.
+AC_DEFUN([gl_ABSOLUTE_HEADER],
+[AC_REQUIRE([AC_CANONICAL_HOST])
+AC_LANG_PREPROC_REQUIRE()dnl
+m4_foreach_w([gl_HEADER_NAME], [$1],
+ [AS_VAR_PUSHDEF([gl_absolute_header],
+ [gl_cv_absolute_]m4_defn([gl_HEADER_NAME]))dnl
+ AC_CACHE_CHECK([absolute name of <]m4_defn([gl_HEADER_NAME])[>],
+ [gl_absolute_header],
+ [AS_VAR_PUSHDEF([ac_header_exists],
+ [ac_cv_header_]m4_defn([gl_HEADER_NAME]))dnl
+ AC_CHECK_HEADERS_ONCE(m4_defn([gl_HEADER_NAME]))dnl
+ if test AS_VAR_GET([ac_header_exists]) = yes; then
+ gl_ABSOLUTE_HEADER_ONE(m4_defn([gl_HEADER_NAME]))
+ fi
+ AS_VAR_POPDEF([ac_header_exists])dnl
+ ])dnl
+ AC_DEFINE_UNQUOTED(AS_TR_CPP([ABSOLUTE_]m4_defn([gl_HEADER_NAME])),
+ ["AS_VAR_GET([gl_absolute_header])"],
+ [Define this to an absolute name of <]m4_defn([gl_HEADER_NAME])[>.])
+ AS_VAR_POPDEF([gl_absolute_header])dnl
+])dnl
+])# gl_ABSOLUTE_HEADER
+
+# gl_ABSOLUTE_HEADER_ONE(HEADER)
+# ------------------------------
+# Like gl_ABSOLUTE_HEADER, except that:
+# - it assumes that the header exists,
+# - it uses the current CPPFLAGS,
+# - it does not cache the result,
+# - it is silent.
+AC_DEFUN([gl_ABSOLUTE_HEADER_ONE],
+[
+ AC_REQUIRE([AC_CANONICAL_HOST])
+ AC_LANG_CONFTEST([AC_LANG_SOURCE([[#include <]]m4_dquote([$1])[[>]])])
+ dnl AIX "xlc -E" and "cc -E" omit #line directives for header files
+ dnl that contain only a #include of other header files and no
+ dnl non-comment tokens of their own. This leads to a failure to
+ dnl detect the absolute name of , ,
+ dnl and others. The workaround is to force preservation of comments
+ dnl through option -C. This ensures all necessary #line directives
+ dnl are present. GCC supports option -C as well.
+ case "$host_os" in
+ aix*) gl_absname_cpp="$ac_cpp -C" ;;
+ *) gl_absname_cpp="$ac_cpp" ;;
+ esac
+changequote(,)
+ case "$host_os" in
+ mingw*)
+ dnl For the sake of native Windows compilers (excluding gcc),
+ dnl treat backslash as a directory separator, like /.
+ dnl Actually, these compilers use a double-backslash as
+ dnl directory separator, inside the
+ dnl # line "filename"
+ dnl directives.
+ gl_dirsep_regex='[/\\]'
+ ;;
+ *)
+ gl_dirsep_regex='\/'
+ ;;
+ esac
+ dnl A sed expression that turns a string into a basic regular
+ dnl expression, for use within "/.../".
+ gl_make_literal_regex_sed='s,[]$^\\.*/[],\\&,g'
+ gl_header_literal_regex=`echo '$1' \
+ | sed -e "$gl_make_literal_regex_sed"`
+ gl_absolute_header_sed="/${gl_dirsep_regex}${gl_header_literal_regex}/"'{
+ s/.*"\(.*'"${gl_dirsep_regex}${gl_header_literal_regex}"'\)".*/\1/
+ s|^/[^/]|//&|
+ p
+ q
+ }'
+changequote([,])
+ dnl eval is necessary to expand gl_absname_cpp.
+ dnl Ultrix and Pyramid sh refuse to redirect output of eval,
+ dnl so use subshell.
+ AS_VAR_SET([gl_cv_absolute_]AS_TR_SH([[$1]]),
+[`(eval "$gl_absname_cpp conftest.$ac_ext") 2>&AS_MESSAGE_LOG_FD |
+ sed -n "$gl_absolute_header_sed"`])
+])
diff --git a/m4/gnulib/extensions.m4 b/m4/gnulib/extensions.m4
new file mode 100644
index 0000000..5336b8d
--- /dev/null
+++ b/m4/gnulib/extensions.m4
@@ -0,0 +1,232 @@
+# serial 23 -*- Autoconf -*-
+# Enable extensions on systems that normally disable them.
+
+# Copyright (C) 2003, 2006-2023 Free Software Foundation, Inc.
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+dnl Define to empty for the benefit of Autoconf 2.69 and earlier, so that
+dnl AC_USE_SYSTEM_EXTENSIONS (below) can be used unchanged from Autoconf 2.70+.
+m4_ifndef([AC_CHECK_INCLUDES_DEFAULT],
+ [AC_DEFUN([AC_CHECK_INCLUDES_DEFAULT], [])])
+
+# This definition of AC_USE_SYSTEM_EXTENSIONS is stolen from git
+# Autoconf. Perhaps we can remove this once we can assume Autoconf
+# is recent-enough everywhere, but since Autoconf mutates rapidly
+# enough in this area it's likely we'll need to redefine
+# AC_USE_SYSTEM_EXTENSIONS for quite some time.
+
+# If autoconf reports a warning
+# warning: AC_COMPILE_IFELSE was called before AC_USE_SYSTEM_EXTENSIONS
+# or warning: AC_RUN_IFELSE was called before AC_USE_SYSTEM_EXTENSIONS
+# the fix is
+# 1) to ensure that AC_USE_SYSTEM_EXTENSIONS is never directly invoked
+# but always AC_REQUIREd,
+# 2) to ensure that for each occurrence of
+# AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+# or
+# AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+# the corresponding gnulib module description has 'extensions' among
+# its dependencies. This will ensure that the gl_USE_SYSTEM_EXTENSIONS
+# invocation occurs in gl_EARLY, not in gl_INIT.
+
+m4_version_prereq([2.72], [], [
+
+# AC_USE_SYSTEM_EXTENSIONS
+# ------------------------
+# Enable extensions on systems that normally disable them,
+# typically due to standards-conformance issues.
+# We unconditionally define as many of the known feature-enabling
+# as possible, reserving conditional behavior for macros that are
+# known to cause problems on some platforms (such as __EXTENSIONS__).
+AC_DEFUN_ONCE([AC_USE_SYSTEM_EXTENSIONS],
+[AC_BEFORE([$0], [AC_PREPROC_IFELSE])dnl
+AC_BEFORE([$0], [AC_COMPILE_IFELSE])dnl
+AC_BEFORE([$0], [AC_LINK_IFELSE])dnl
+AC_BEFORE([$0], [AC_RUN_IFELSE])dnl
+AC_BEFORE([$0], [AC_CHECK_INCLUDES_DEFAULT])dnl
+dnl #undef in AH_VERBATIM gets replaced with #define by AC_DEFINE.
+dnl Use a different key than __EXTENSIONS__, as that name broke existing
+dnl configure.ac when using autoheader 2.62.
+dnl The macros below are in alphabetical order ignoring leading _ or __
+dnl prefixes.
+AH_VERBATIM([USE_SYSTEM_EXTENSIONS],
+[/* Enable extensions on AIX 3, Interix. */
+#ifndef _ALL_SOURCE
+# undef _ALL_SOURCE
+#endif
+/* Enable general extensions on macOS. */
+#ifndef _DARWIN_C_SOURCE
+# undef _DARWIN_C_SOURCE
+#endif
+/* Enable general extensions on Solaris. */
+#ifndef __EXTENSIONS__
+# undef __EXTENSIONS__
+#endif
+/* Enable GNU extensions on systems that have them. */
+#ifndef _GNU_SOURCE
+# undef _GNU_SOURCE
+#endif
+/* Enable X/Open compliant socket functions that do not require linking
+ with -lxnet on HP-UX 11.11. */
+#ifndef _HPUX_ALT_XOPEN_SOCKET_API
+# undef _HPUX_ALT_XOPEN_SOCKET_API
+#endif
+/* Identify the host operating system as Minix.
+ This macro does not affect the system headers' behavior.
+ A future release of Autoconf may stop defining this macro. */
+#ifndef _MINIX
+# undef _MINIX
+#endif
+/* Enable general extensions on NetBSD.
+ Enable NetBSD compatibility extensions on Minix. */
+#ifndef _NETBSD_SOURCE
+# undef _NETBSD_SOURCE
+#endif
+/* Enable OpenBSD compatibility extensions on NetBSD.
+ Oddly enough, this does nothing on OpenBSD. */
+#ifndef _OPENBSD_SOURCE
+# undef _OPENBSD_SOURCE
+#endif
+/* Define to 1 if needed for POSIX-compatible behavior. */
+#ifndef _POSIX_SOURCE
+# undef _POSIX_SOURCE
+#endif
+/* Define to 2 if needed for POSIX-compatible behavior. */
+#ifndef _POSIX_1_SOURCE
+# undef _POSIX_1_SOURCE
+#endif
+/* Enable POSIX-compatible threading on Solaris. */
+#ifndef _POSIX_PTHREAD_SEMANTICS
+# undef _POSIX_PTHREAD_SEMANTICS
+#endif
+/* Enable extensions specified by ISO/IEC TS 18661-5:2014. */
+#ifndef __STDC_WANT_IEC_60559_ATTRIBS_EXT__
+# undef __STDC_WANT_IEC_60559_ATTRIBS_EXT__
+#endif
+/* Enable extensions specified by ISO/IEC TS 18661-1:2014. */
+#ifndef __STDC_WANT_IEC_60559_BFP_EXT__
+# undef __STDC_WANT_IEC_60559_BFP_EXT__
+#endif
+/* Enable extensions specified by ISO/IEC TS 18661-2:2015. */
+#ifndef __STDC_WANT_IEC_60559_DFP_EXT__
+# undef __STDC_WANT_IEC_60559_DFP_EXT__
+#endif
+/* Enable extensions specified by C23 Annex F. */
+#ifndef __STDC_WANT_IEC_60559_EXT__
+# undef __STDC_WANT_IEC_60559_EXT__
+#endif
+/* Enable extensions specified by ISO/IEC TS 18661-4:2015. */
+#ifndef __STDC_WANT_IEC_60559_FUNCS_EXT__
+# undef __STDC_WANT_IEC_60559_FUNCS_EXT__
+#endif
+/* Enable extensions specified by C23 Annex H and ISO/IEC TS 18661-3:2015. */
+#ifndef __STDC_WANT_IEC_60559_TYPES_EXT__
+# undef __STDC_WANT_IEC_60559_TYPES_EXT__
+#endif
+/* Enable extensions specified by ISO/IEC TR 24731-2:2010. */
+#ifndef __STDC_WANT_LIB_EXT2__
+# undef __STDC_WANT_LIB_EXT2__
+#endif
+/* Enable extensions specified by ISO/IEC 24747:2009. */
+#ifndef __STDC_WANT_MATH_SPEC_FUNCS__
+# undef __STDC_WANT_MATH_SPEC_FUNCS__
+#endif
+/* Enable extensions on HP NonStop. */
+#ifndef _TANDEM_SOURCE
+# undef _TANDEM_SOURCE
+#endif
+/* Enable X/Open extensions. Define to 500 only if necessary
+ to make mbstate_t available. */
+#ifndef _XOPEN_SOURCE
+# undef _XOPEN_SOURCE
+#endif
+])dnl
+
+ AC_REQUIRE([AC_CHECK_INCLUDES_DEFAULT])dnl
+ _AC_CHECK_HEADER_ONCE([wchar.h])
+ _AC_CHECK_HEADER_ONCE([minix/config.h])
+
+dnl Defining __EXTENSIONS__ may break the system headers on some systems.
+dnl (FIXME: Which ones?)
+ AC_CACHE_CHECK([whether it is safe to define __EXTENSIONS__],
+ [ac_cv_safe_to_define___extensions__],
+ [AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM([[
+# define __EXTENSIONS__ 1
+ ]AC_INCLUDES_DEFAULT])],
+ [ac_cv_safe_to_define___extensions__=yes],
+ [ac_cv_safe_to_define___extensions__=no])])
+
+dnl HP-UX 11.11 defines mbstate_t only if _XOPEN_SOURCE is defined to
+dnl 500, regardless of whether compiling with -Ae or -D_HPUX_SOURCE=1.
+dnl But defining _XOPEN_SOURCE may turn *off* extensions on platforms
+dnl not covered by turn-on-extensions macros (notably Dragonfly, Free,
+dnl and OpenBSD, which don't have any equivalent of _NETBSD_SOURCE) so
+dnl it should only be defined when necessary.
+ AC_CACHE_CHECK([whether _XOPEN_SOURCE should be defined],
+ [ac_cv_should_define__xopen_source],
+ [ac_cv_should_define__xopen_source=no
+ AS_IF([test $ac_cv_header_wchar_h = yes],
+ [AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM([[
+ #include
+ mbstate_t x;]])],
+ [],
+ [AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM([[
+ #define _XOPEN_SOURCE 500
+ #include
+ mbstate_t x;]])],
+ [ac_cv_should_define__xopen_source=yes])])])])
+
+ AC_DEFINE([_ALL_SOURCE])
+ AC_DEFINE([_DARWIN_C_SOURCE])
+ AC_DEFINE([_GNU_SOURCE])
+ AC_DEFINE([_HPUX_ALT_XOPEN_SOCKET_API])
+ AC_DEFINE([_NETBSD_SOURCE])
+ AC_DEFINE([_OPENBSD_SOURCE])
+ AC_DEFINE([_POSIX_PTHREAD_SEMANTICS])
+ AC_DEFINE([__STDC_WANT_IEC_60559_ATTRIBS_EXT__])
+ AC_DEFINE([__STDC_WANT_IEC_60559_BFP_EXT__])
+ AC_DEFINE([__STDC_WANT_IEC_60559_DFP_EXT__])
+ AC_DEFINE([__STDC_WANT_IEC_60559_EXT__])
+ AC_DEFINE([__STDC_WANT_IEC_60559_FUNCS_EXT__])
+ AC_DEFINE([__STDC_WANT_IEC_60559_TYPES_EXT__])
+ AC_DEFINE([__STDC_WANT_LIB_EXT2__])
+ AC_DEFINE([__STDC_WANT_MATH_SPEC_FUNCS__])
+ AC_DEFINE([_TANDEM_SOURCE])
+ AS_IF([test $ac_cv_header_minix_config_h = yes],
+ [MINIX=yes
+ AC_DEFINE([_MINIX])
+ AC_DEFINE([_POSIX_SOURCE])
+ AC_DEFINE([_POSIX_1_SOURCE], [2])],
+ [MINIX=])
+ AS_IF([test $ac_cv_safe_to_define___extensions__ = yes],
+ [AC_DEFINE([__EXTENSIONS__])])
+ AS_IF([test $ac_cv_should_define__xopen_source = yes],
+ [AC_DEFINE([_XOPEN_SOURCE], [500])])
+])# AC_USE_SYSTEM_EXTENSIONS
+])
+
+# gl_USE_SYSTEM_EXTENSIONS
+# ------------------------
+# Enable extensions on systems that normally disable them,
+# typically due to standards-conformance issues.
+AC_DEFUN_ONCE([gl_USE_SYSTEM_EXTENSIONS],
+[
+ AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+
+ dnl On OpenBSD 6.8 with GCC, the include files contain a couple of
+ dnl definitions that are only activated with an explicit -D_ISOC11_SOURCE.
+ dnl That's because this version of GCC (4.2.1) supports the option
+ dnl '-std=gnu99' but not the option '-std=gnu11'.
+ AC_REQUIRE([AC_CANONICAL_HOST])
+ case "$host_os" in
+ openbsd*)
+ AC_DEFINE([_ISOC11_SOURCE], [1],
+ [Define to enable the declarations of ISO C 11 types and functions.])
+ ;;
+ esac
+])
diff --git a/m4/gnulib/extern-inline.m4 b/m4/gnulib/extern-inline.m4
new file mode 100644
index 0000000..c001b1c
--- /dev/null
+++ b/m4/gnulib/extern-inline.m4
@@ -0,0 +1,130 @@
+dnl 'extern inline' a la ISO C99.
+
+dnl Copyright 2012-2023 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_EXTERN_INLINE],
+[
+ AC_CACHE_CHECK([whether ctype.h defines __header_inline],
+ [gl_cv_have___header_inline],
+ [AC_PREPROC_IFELSE(
+ [AC_LANG_SOURCE([[#include
+ #ifndef __header_inline
+ #error " does not define __header_inline"
+ #endif
+ ]])],
+ [gl_cv_have___header_inline=yes],
+ [gl_cv_have___header_inline=no])])
+ if test "$gl_cv_have___header_inline" = yes; then
+ AC_DEFINE([HAVE___HEADER_INLINE], [1],
+ [Define to 1 if ctype.h defines __header_inline.])
+ fi
+
+ AH_VERBATIM([HAVE___HEADER_INLINE_1],
+[/* Please see the Gnulib manual for how to use these macros.
+
+ Suppress extern inline with HP-UX cc, as it appears to be broken; see
+ .
+
+ Suppress extern inline with Sun C in standards-conformance mode, as it
+ mishandles inline functions that call each other. E.g., for 'inline void f
+ (void) { } inline void g (void) { f (); }', c99 incorrectly complains
+ 'reference to static identifier "f" in extern inline function'.
+ This bug was observed with Oracle Developer Studio 12.6
+ (Sun C 5.15 SunOS_sparc 2017/05/30).
+
+ Suppress extern inline (with or without __attribute__ ((__gnu_inline__)))
+ on configurations that mistakenly use 'static inline' to implement
+ functions or macros in standard C headers like . For example,
+ if isdigit is mistakenly implemented via a static inline function,
+ a program containing an extern inline function that calls isdigit
+ may not work since the C standard prohibits extern inline functions
+ from calling static functions (ISO C 99 section 6.7.4.(3).
+ This bug is known to occur on:
+
+ OS X 10.8 and earlier; see:
+ https://lists.gnu.org/r/bug-gnulib/2012-12/msg00023.html
+
+ DragonFly; see
+ http://muscles.dragonflybsd.org/bulk/clang-master-potential/20141111_102002/logs/ah-tty-0.3.12.log
+
+ FreeBSD; see:
+ https://lists.gnu.org/r/bug-gnulib/2014-07/msg00104.html
+
+ OS X 10.9 has a macro __header_inline indicating the bug is fixed for C and
+ for clang but remains for g++; see .
+ Assume DragonFly and FreeBSD will be similar.
+
+ GCC 4.3 and above with -std=c99 or -std=gnu99 implements ISO C99
+ inline semantics, unless -fgnu89-inline is used. It defines a macro
+ __GNUC_STDC_INLINE__ to indicate this situation or a macro
+ __GNUC_GNU_INLINE__ to indicate the opposite situation.
+ GCC 4.2 with -std=c99 or -std=gnu99 implements the GNU C inline
+ semantics but warns, unless -fgnu89-inline is used:
+ warning: C99 inline functions are not supported; using GNU89
+ warning: to disable this warning use -fgnu89-inline or the gnu_inline function attribute
+ It defines a macro __GNUC_GNU_INLINE__ to indicate this situation.
+ */
+#if (((defined __APPLE__ && defined __MACH__) \
+ || defined __DragonFly__ || defined __FreeBSD__) \
+ && (defined HAVE___HEADER_INLINE \
+ ? (defined __cplusplus && defined __GNUC_STDC_INLINE__ \
+ && ! defined __clang__) \
+ : ((! defined _DONT_USE_CTYPE_INLINE_ \
+ && (defined __GNUC__ || defined __cplusplus)) \
+ || (defined _FORTIFY_SOURCE && 0 < _FORTIFY_SOURCE \
+ && defined __GNUC__ && ! defined __cplusplus))))
+# define _GL_EXTERN_INLINE_STDHEADER_BUG
+#endif
+#if ((__GNUC__ \
+ ? defined __GNUC_STDC_INLINE__ && __GNUC_STDC_INLINE__ \
+ : (199901L <= __STDC_VERSION__ \
+ && !defined __HP_cc \
+ && !defined __PGI \
+ && !(defined __SUNPRO_C && __STDC__))) \
+ && !defined _GL_EXTERN_INLINE_STDHEADER_BUG)
+# define _GL_INLINE inline
+# define _GL_EXTERN_INLINE extern inline
+# define _GL_EXTERN_INLINE_IN_USE
+#elif (2 < __GNUC__ + (7 <= __GNUC_MINOR__) && !defined __STRICT_ANSI__ \
+ && !defined _GL_EXTERN_INLINE_STDHEADER_BUG)
+# if defined __GNUC_GNU_INLINE__ && __GNUC_GNU_INLINE__
+ /* __gnu_inline__ suppresses a GCC 4.2 diagnostic. */
+# define _GL_INLINE extern inline __attribute__ ((__gnu_inline__))
+# else
+# define _GL_INLINE extern inline
+# endif
+# define _GL_EXTERN_INLINE extern
+# define _GL_EXTERN_INLINE_IN_USE
+#else
+# define _GL_INLINE _GL_UNUSED static
+# define _GL_EXTERN_INLINE _GL_UNUSED static
+#endif
+
+/* In GCC 4.6 (inclusive) to 5.1 (exclusive),
+ suppress bogus "no previous prototype for 'FOO'"
+ and "no previous declaration for 'FOO'" diagnostics,
+ when FOO is an inline function in the header; see
+ and
+ . */
+#if __GNUC__ == 4 && 6 <= __GNUC_MINOR__
+# if defined __GNUC_STDC_INLINE__ && __GNUC_STDC_INLINE__
+# define _GL_INLINE_HEADER_CONST_PRAGMA
+# else
+# define _GL_INLINE_HEADER_CONST_PRAGMA \
+ _Pragma ("GCC diagnostic ignored \"-Wsuggest-attribute=const\"")
+# endif
+# define _GL_INLINE_HEADER_BEGIN \
+ _Pragma ("GCC diagnostic push") \
+ _Pragma ("GCC diagnostic ignored \"-Wmissing-prototypes\"") \
+ _Pragma ("GCC diagnostic ignored \"-Wmissing-declarations\"") \
+ _GL_INLINE_HEADER_CONST_PRAGMA
+# define _GL_INLINE_HEADER_END \
+ _Pragma ("GCC diagnostic pop")
+#else
+# define _GL_INLINE_HEADER_BEGIN
+# define _GL_INLINE_HEADER_END
+#endif])
+])
diff --git a/m4/gnulib/getopt.m4 b/m4/gnulib/getopt.m4
new file mode 100644
index 0000000..7981a09
--- /dev/null
+++ b/m4/gnulib/getopt.m4
@@ -0,0 +1,381 @@
+# getopt.m4 serial 48
+dnl Copyright (C) 2002-2006, 2008-2023 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+# Request a POSIX compliant getopt function.
+AC_DEFUN([gl_FUNC_GETOPT_POSIX],
+[
+ m4_divert_text([DEFAULTS], [gl_getopt_required=POSIX])
+ AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
+ AC_REQUIRE([gl_GETOPT_CHECK_HEADERS])
+ dnl Other modules can request the gnulib implementation of the getopt
+ dnl functions unconditionally, by defining gl_REPLACE_GETOPT_ALWAYS.
+ dnl argp.m4 does this.
+ m4_ifdef([gl_REPLACE_GETOPT_ALWAYS], [
+ REPLACE_GETOPT=1
+ ], [
+ REPLACE_GETOPT=0
+ if test -n "$gl_replace_getopt"; then
+ REPLACE_GETOPT=1
+ fi
+ ])
+ GL_GENERATE_GETOPT_H=false
+ GL_GENERATE_GETOPT_CDEFS_H=false
+ if test $REPLACE_GETOPT = 1; then
+ dnl Arrange for getopt.h to be created.
+ gl_GETOPT_SUBSTITUTE_HEADER
+ fi
+])
+
+# Request a POSIX compliant getopt function with GNU extensions (such as
+# options with optional arguments) and the functions getopt_long,
+# getopt_long_only.
+AC_DEFUN([gl_FUNC_GETOPT_GNU],
+[
+ dnl Set the variable gl_getopt_required, so that all invocations of
+ dnl gl_GETOPT_CHECK_HEADERS in the scope of the current configure file
+ dnl will check for getopt with GNU extensions.
+ dnl This means that if one gnulib-tool invocation requests getopt-posix
+ dnl and another gnulib-tool invocation requests getopt-gnu, it is as if
+ dnl both had requested getopt-gnu.
+ m4_divert_text([INIT_PREPARE], [gl_getopt_required=GNU])
+
+ dnl No need to invoke gl_FUNC_GETOPT_POSIX here; this is automatically
+ dnl done through the module dependency getopt-gnu -> getopt-posix.
+])
+
+# Determine whether to replace the entire getopt facility.
+AC_DEFUN([gl_GETOPT_CHECK_HEADERS],
+[
+ AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+ AC_REQUIRE([AC_PROG_AWK]) dnl for awk that supports ENVIRON
+
+ dnl Persuade Solaris to declare optarg, optind, opterr, optopt.
+ AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+
+ gl_CHECK_NEXT_HEADERS([getopt.h])
+ if test $ac_cv_header_getopt_h = yes; then
+ HAVE_GETOPT_H=1
+ else
+ HAVE_GETOPT_H=0
+ fi
+ AC_SUBST([HAVE_GETOPT_H])
+
+ gl_replace_getopt=
+
+ dnl Test whether is available.
+ if test -z "$gl_replace_getopt" && test $gl_getopt_required = GNU; then
+ AC_CHECK_HEADERS([getopt.h], [], [gl_replace_getopt=yes])
+ fi
+
+ dnl Test whether the function getopt_long is available.
+ if test -z "$gl_replace_getopt" && test $gl_getopt_required = GNU; then
+ AC_CHECK_FUNCS([getopt_long_only], [], [gl_replace_getopt=yes])
+ fi
+
+ dnl POSIX 2008 does not specify leading '+' behavior, but see
+ dnl http://austingroupbugs.net/view.php?id=191 for a recommendation on
+ dnl the next version of POSIX. For now, we only guarantee leading '+'
+ dnl behavior with getopt-gnu.
+ if test -z "$gl_replace_getopt"; then
+ AC_CACHE_CHECK([whether getopt is POSIX compatible],
+ [gl_cv_func_getopt_posix],
+ [
+ dnl Merging these three different test programs into a single one
+ dnl would require a reset mechanism. On BSD systems, it can be done
+ dnl through 'optreset'; on some others (glibc), it can be done by
+ dnl setting 'optind' to 0; on others again (HP-UX, IRIX, OSF/1,
+ dnl Solaris 9, musl libc), there is no such mechanism.
+ if test $cross_compiling = no; then
+ dnl Sanity check. Succeeds everywhere (except on MSVC,
+ dnl which lacks and getopt() entirely).
+ AC_RUN_IFELSE(
+ [AC_LANG_SOURCE([[
+#include
+#include
+#include
+
+int
+main ()
+{
+ static char program[] = "program";
+ static char a[] = "-a";
+ static char foo[] = "foo";
+ static char bar[] = "bar";
+ char *argv[] = { program, a, foo, bar, NULL };
+ int c;
+
+ c = getopt (4, argv, "ab");
+ if (!(c == 'a'))
+ return 1;
+ c = getopt (4, argv, "ab");
+ if (!(c == -1))
+ return 2;
+ if (!(optind == 2))
+ return 3;
+ return 0;
+}
+]])],
+ [gl_cv_func_getopt_posix=maybe],
+ [gl_cv_func_getopt_posix=no])
+ if test $gl_cv_func_getopt_posix = maybe; then
+ dnl Sanity check with '+'. Succeeds everywhere (except on MSVC,
+ dnl which lacks and getopt() entirely).
+ AC_RUN_IFELSE(
+ [AC_LANG_SOURCE([[
+#include
+#include
+#include
+
+int
+main ()
+{
+ static char program[] = "program";
+ static char donald[] = "donald";
+ static char p[] = "-p";
+ static char billy[] = "billy";
+ static char duck[] = "duck";
+ static char a[] = "-a";
+ static char bar[] = "bar";
+ char *argv[] = { program, donald, p, billy, duck, a, bar, NULL };
+ int c;
+
+ c = getopt (7, argv, "+abp:q:");
+ if (!(c == -1))
+ return 4;
+ if (!(strcmp (argv[0], "program") == 0))
+ return 5;
+ if (!(strcmp (argv[1], "donald") == 0))
+ return 6;
+ if (!(strcmp (argv[2], "-p") == 0))
+ return 7;
+ if (!(strcmp (argv[3], "billy") == 0))
+ return 8;
+ if (!(strcmp (argv[4], "duck") == 0))
+ return 9;
+ if (!(strcmp (argv[5], "-a") == 0))
+ return 10;
+ if (!(strcmp (argv[6], "bar") == 0))
+ return 11;
+ if (!(optind == 1))
+ return 12;
+ return 0;
+}
+]])],
+ [gl_cv_func_getopt_posix=maybe],
+ [gl_cv_func_getopt_posix=no])
+ fi
+ if test $gl_cv_func_getopt_posix = maybe; then
+ dnl Detect Mac OS X 10.5, AIX 7.1, mingw bug.
+ AC_RUN_IFELSE(
+ [AC_LANG_SOURCE([[
+#include
+#include
+#include
+
+int
+main ()
+{
+ static char program[] = "program";
+ static char ab[] = "-ab";
+ char *argv[3] = { program, ab, NULL };
+ if (getopt (2, argv, "ab:") != 'a')
+ return 13;
+ if (getopt (2, argv, "ab:") != '?')
+ return 14;
+ if (optopt != 'b')
+ return 15;
+ if (optind != 2)
+ return 16;
+ return 0;
+}
+]])],
+ [gl_cv_func_getopt_posix=yes],
+ [gl_cv_func_getopt_posix=no])
+ fi
+ else
+ case "$host_os" in
+ darwin* | aix* | mingw*) gl_cv_func_getopt_posix="guessing no";;
+ *) gl_cv_func_getopt_posix="guessing yes";;
+ esac
+ fi
+ ])
+ case "$gl_cv_func_getopt_posix" in
+ *no) gl_replace_getopt=yes ;;
+ esac
+ fi
+
+ if test -z "$gl_replace_getopt" && test $gl_getopt_required = GNU; then
+ AC_CACHE_CHECK([for working GNU getopt function], [gl_cv_func_getopt_gnu],
+ [# Even with POSIXLY_CORRECT, the GNU extension of leading '-' in the
+ # optstring is necessary for programs like m4 that have POSIX-mandated
+ # semantics for supporting options interspersed with files.
+ # Also, since getopt_long is a GNU extension, we require optind=0.
+ # Bash ties 'set -o posix' to a non-exported POSIXLY_CORRECT;
+ # so take care to revert to the correct (non-)export state.
+dnl GNU Coding Standards currently allow awk but not env; besides, env
+dnl is ambiguous with environment values that contain newlines.
+ gl_awk_probe='BEGIN { if ("POSIXLY_CORRECT" in ENVIRON) print "x" }'
+ case ${POSIXLY_CORRECT+x}`$AWK "$gl_awk_probe"
+ #include
+ #include
+ ]GL_NOCRASH[
+ ]], [[
+ int result = 0;
+
+ nocrash_init();
+
+ /* This code succeeds on glibc 2.8, OpenBSD 4.0, Cygwin, mingw,
+ and fails on Mac OS X 10.5, AIX 5.2, HP-UX 11, IRIX 6.5,
+ OSF/1 5.1, Solaris 10. */
+ {
+ static char conftest[] = "conftest";
+ static char plus[] = "-+";
+ char *argv[3] = { conftest, plus, NULL };
+ opterr = 0;
+ if (getopt (2, argv, "+a") != '?')
+ result |= 1;
+ }
+ /* This code succeeds on glibc 2.8, mingw,
+ and fails on Mac OS X 10.5, OpenBSD 4.0, AIX 5.2, HP-UX 11,
+ IRIX 6.5, OSF/1 5.1, Solaris 10, Cygwin 1.5.x. */
+ {
+ static char program[] = "program";
+ static char p[] = "-p";
+ static char foo[] = "foo";
+ static char bar[] = "bar";
+ char *argv[] = { program, p, foo, bar, NULL };
+
+ optind = 1;
+ if (getopt (4, argv, "p::") != 'p')
+ result |= 2;
+ else if (optarg != NULL)
+ result |= 4;
+ else if (getopt (4, argv, "p::") != -1)
+ result |= 6;
+ else if (optind != 2)
+ result |= 8;
+ }
+ /* This code succeeds on glibc 2.8 and fails on Cygwin 1.7.0. */
+ {
+ static char program[] = "program";
+ static char foo[] = "foo";
+ static char p[] = "-p";
+ char *argv[] = { program, foo, p, NULL };
+ optind = 0;
+ if (getopt (3, argv, "-p") != 1)
+ result |= 16;
+ else if (getopt (3, argv, "-p") != 'p')
+ result |= 16;
+ }
+ /* This code fails on glibc 2.11. */
+ {
+ static char program[] = "program";
+ static char b[] = "-b";
+ static char a[] = "-a";
+ char *argv[] = { program, b, a, NULL };
+ optind = opterr = 0;
+ if (getopt (3, argv, "+:a:b") != 'b')
+ result |= 32;
+ else if (getopt (3, argv, "+:a:b") != ':')
+ result |= 32;
+ }
+ /* This code dumps core on glibc 2.14. */
+ {
+ static char program[] = "program";
+ static char w[] = "-W";
+ static char dummy[] = "dummy";
+ char *argv[] = { program, w, dummy, NULL };
+ optind = opterr = 1;
+ if (getopt (3, argv, "W;") != 'W')
+ result |= 64;
+ }
+ return result;
+ ]])],
+ [gl_cv_func_getopt_gnu=yes],
+ [gl_cv_func_getopt_gnu=no],
+ [dnl Cross compiling.
+ dnl Assume the worst, even on glibc platforms.
+ dnl But obey --enable-cross-guesses.
+ gl_cv_func_getopt_gnu="$gl_cross_guess_normal"
+ ])
+ case $gl_had_POSIXLY_CORRECT in
+ exported) ;;
+ yes) AS_UNSET([POSIXLY_CORRECT]); POSIXLY_CORRECT=1 ;;
+ *) AS_UNSET([POSIXLY_CORRECT]) ;;
+ esac
+ ])
+ if test "$gl_cv_func_getopt_gnu" != yes; then
+ gl_replace_getopt=yes
+ else
+ AC_CACHE_CHECK([for working GNU getopt_long function],
+ [gl_cv_func_getopt_long_gnu],
+ [AC_RUN_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[#include
+ #include
+ #include
+ ]],
+ [[static const struct option long_options[] =
+ {
+ { "xtremely-",no_argument, NULL, 1003 },
+ { "xtra", no_argument, NULL, 1001 },
+ { "xtreme", no_argument, NULL, 1002 },
+ { "xtremely", no_argument, NULL, 1003 },
+ { NULL, 0, NULL, 0 }
+ };
+ /* This code fails on OpenBSD 5.0. */
+ {
+ static char program[] = "program";
+ static char xtremel[] = "--xtremel";
+ char *argv[] = { program, xtremel, NULL };
+ int option_index;
+ optind = 1; opterr = 0;
+ if (getopt_long (2, argv, "", long_options, &option_index) != 1003)
+ return 1;
+ }
+ return 0;
+ ]])],
+ [gl_cv_func_getopt_long_gnu=yes],
+ [gl_cv_func_getopt_long_gnu=no],
+ [dnl Cross compiling. Guess no on OpenBSD, yes otherwise.
+ case "$host_os" in
+ openbsd*) gl_cv_func_getopt_long_gnu="guessing no";;
+ *) gl_cv_func_getopt_long_gnu="guessing yes";;
+ esac
+ ])
+ ])
+ case "$gl_cv_func_getopt_long_gnu" in
+ *yes) ;;
+ *) gl_replace_getopt=yes ;;
+ esac
+ fi
+ fi
+])
+
+AC_DEFUN([gl_GETOPT_SUBSTITUTE_HEADER],
+[
+ AC_CHECK_HEADERS_ONCE([sys/cdefs.h])
+ if test $ac_cv_header_sys_cdefs_h = yes; then
+ HAVE_SYS_CDEFS_H=1
+ else
+ HAVE_SYS_CDEFS_H=0
+ fi
+ AC_SUBST([HAVE_SYS_CDEFS_H])
+
+ AC_DEFINE([__GETOPT_PREFIX], [[rpl_]],
+ [Define to rpl_ if the getopt replacement functions and variables
+ should be used.])
+ GL_GENERATE_GETOPT_H=true
+ GL_GENERATE_GETOPT_CDEFS_H=true
+])
diff --git a/m4/gnulib/gnulib-cache.m4 b/m4/gnulib/gnulib-cache.m4
new file mode 100644
index 0000000..d115db8
--- /dev/null
+++ b/m4/gnulib/gnulib-cache.m4
@@ -0,0 +1,59 @@
+# Copyright (C) 2002-2023 Free Software Foundation, Inc.
+#
+# This file is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This file is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this file. If not, see .
+#
+# As a special exception to the GNU General Public License,
+# this file may be distributed as part of a program that
+# contains a configuration script generated by Autoconf, under
+# the same distribution terms as the rest of that program.
+#
+# Generated by gnulib-tool.
+#
+# This file represents the specification of how gnulib-tool is used.
+# It acts as a cache: It is written and read by gnulib-tool.
+# In projects that use version control, this file is meant to be put under
+# version control, like the configure.ac and various Makefile.am files.
+
+
+# Specification in the form of a command-line invocation:
+# gnulib-tool --import \
+# --lib=libgnu \
+# --source-base=gnulib \
+# --m4-base=m4/gnulib \
+# --doc-base=doc \
+# --tests-base=tests \
+# --aux-dir=. \
+# --no-conditional-dependencies \
+# --no-libtool \
+# --macro-prefix=gl \
+# --no-vc-files \
+# getopt-gnu
+
+# Specification in the form of a few gnulib-tool.m4 macro invocations:
+gl_LOCAL_DIR([])
+gl_MODULES([
+ getopt-gnu
+])
+gl_AVOID([])
+gl_SOURCE_BASE([gnulib])
+gl_M4_BASE([m4/gnulib])
+gl_PO_BASE([])
+gl_DOC_BASE([doc])
+gl_TESTS_BASE([tests])
+gl_LIB([libgnu])
+gl_MAKEFILE_NAME([])
+gl_MACRO_PREFIX([gl])
+gl_PO_DOMAIN([])
+gl_WITNESS_C_MACRO([])
+gl_VC_FILES([false])
diff --git a/m4/gnulib/gnulib-common.m4 b/m4/gnulib/gnulib-common.m4
new file mode 100644
index 0000000..c84a2af
--- /dev/null
+++ b/m4/gnulib/gnulib-common.m4
@@ -0,0 +1,1398 @@
+# gnulib-common.m4 serial 82
+dnl Copyright (C) 2007-2023 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_PREREQ([2.62])
+
+# gl_COMMON
+# is expanded unconditionally through gnulib-tool magic.
+AC_DEFUN([gl_COMMON], [
+ dnl Use AC_REQUIRE here, so that the code is expanded once only.
+ AC_REQUIRE([gl_00GNULIB])
+ AC_REQUIRE([gl_COMMON_BODY])
+ AC_REQUIRE([gl_ZZGNULIB])
+])
+AC_DEFUN([gl_COMMON_BODY], [
+ AH_VERBATIM([_GL_GNUC_PREREQ],
+[/* True if the compiler says it groks GNU C version MAJOR.MINOR. */
+#if defined __GNUC__ && defined __GNUC_MINOR__
+# define _GL_GNUC_PREREQ(major, minor) \
+ ((major) < __GNUC__ + ((minor) <= __GNUC_MINOR__))
+#else
+# define _GL_GNUC_PREREQ(major, minor) 0
+#endif
+])
+ AH_VERBATIM([_Noreturn],
+[/* The _Noreturn keyword of C11. */
+#ifndef _Noreturn
+# if (defined __cplusplus \
+ && ((201103 <= __cplusplus && !(__GNUC__ == 4 && __GNUC_MINOR__ == 7)) \
+ || (defined _MSC_VER && 1900 <= _MSC_VER)) \
+ && 0)
+ /* [[noreturn]] is not practically usable, because with it the syntax
+ extern _Noreturn void func (...);
+ would not be valid; such a declaration would only be valid with 'extern'
+ and '_Noreturn' swapped, or without the 'extern' keyword. However, some
+ AIX system header files and several gnulib header files use precisely
+ this syntax with 'extern'. */
+# define _Noreturn [[noreturn]]
+# elif (defined __clang__ && __clang_major__ < 16 \
+ && defined _GL_WORK_AROUND_LLVM_BUG_59792)
+ /* Compile with -D_GL_WORK_AROUND_LLVM_BUG_59792 to work around
+ that rare LLVM bug, though you may get many false-alarm warnings. */
+# define _Noreturn
+# elif ((!defined __cplusplus || defined __clang__) \
+ && (201112 <= (defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) \
+ || (!defined __STRICT_ANSI__ \
+ && (_GL_GNUC_PREREQ (4, 7) \
+ || (defined __apple_build_version__ \
+ ? 6000000 <= __apple_build_version__ \
+ : 3 < __clang_major__ + (5 <= __clang_minor__))))))
+ /* _Noreturn works as-is. */
+# elif _GL_GNUC_PREREQ (2, 8) || defined __clang__ || 0x5110 <= __SUNPRO_C
+# define _Noreturn __attribute__ ((__noreturn__))
+# elif 1200 <= (defined _MSC_VER ? _MSC_VER : 0)
+# define _Noreturn __declspec (noreturn)
+# else
+# define _Noreturn
+# endif
+#endif
+])
+ AH_VERBATIM([isoc99_inline],
+[/* Work around a bug in Apple GCC 4.0.1 build 5465: In C99 mode, it supports
+ the ISO C 99 semantics of 'extern inline' (unlike the GNU C semantics of
+ earlier versions), but does not display it by setting __GNUC_STDC_INLINE__.
+ __APPLE__ && __MACH__ test for Mac OS X.
+ __APPLE_CC__ tests for the Apple compiler and its version.
+ __STDC_VERSION__ tests for the C99 mode. */
+#if defined __APPLE__ && defined __MACH__ && __APPLE_CC__ >= 5465 && !defined __cplusplus && __STDC_VERSION__ >= 199901L && !defined __GNUC_STDC_INLINE__
+# define __GNUC_STDC_INLINE__ 1
+#endif])
+ AH_VERBATIM([attribute],
+[/* Attributes. */
+#if (defined __has_attribute \
+ && (!defined __clang_minor__ \
+ || (defined __apple_build_version__ \
+ ? 6000000 <= __apple_build_version__ \
+ : 5 <= __clang_major__)))
+# define _GL_HAS_ATTRIBUTE(attr) __has_attribute (__##attr##__)
+#else
+# define _GL_HAS_ATTRIBUTE(attr) _GL_ATTR_##attr
+# define _GL_ATTR_alloc_size _GL_GNUC_PREREQ (4, 3)
+# define _GL_ATTR_always_inline _GL_GNUC_PREREQ (3, 2)
+# define _GL_ATTR_artificial _GL_GNUC_PREREQ (4, 3)
+# define _GL_ATTR_cold _GL_GNUC_PREREQ (4, 3)
+# define _GL_ATTR_const _GL_GNUC_PREREQ (2, 95)
+# define _GL_ATTR_deprecated _GL_GNUC_PREREQ (3, 1)
+# define _GL_ATTR_diagnose_if 0
+# define _GL_ATTR_error _GL_GNUC_PREREQ (4, 3)
+# define _GL_ATTR_externally_visible _GL_GNUC_PREREQ (4, 1)
+# define _GL_ATTR_fallthrough _GL_GNUC_PREREQ (7, 0)
+# define _GL_ATTR_format _GL_GNUC_PREREQ (2, 7)
+# define _GL_ATTR_leaf _GL_GNUC_PREREQ (4, 6)
+# define _GL_ATTR_malloc _GL_GNUC_PREREQ (3, 0)
+# ifdef _ICC
+# define _GL_ATTR_may_alias 0
+# else
+# define _GL_ATTR_may_alias _GL_GNUC_PREREQ (3, 3)
+# endif
+# define _GL_ATTR_noinline _GL_GNUC_PREREQ (3, 1)
+# define _GL_ATTR_nonnull _GL_GNUC_PREREQ (3, 3)
+# define _GL_ATTR_nonstring _GL_GNUC_PREREQ (8, 0)
+# define _GL_ATTR_nothrow _GL_GNUC_PREREQ (3, 3)
+# define _GL_ATTR_packed _GL_GNUC_PREREQ (2, 7)
+# define _GL_ATTR_pure _GL_GNUC_PREREQ (2, 96)
+# define _GL_ATTR_returns_nonnull _GL_GNUC_PREREQ (4, 9)
+# define _GL_ATTR_sentinel _GL_GNUC_PREREQ (4, 0)
+# define _GL_ATTR_unused _GL_GNUC_PREREQ (2, 7)
+# define _GL_ATTR_warn_unused_result _GL_GNUC_PREREQ (3, 4)
+#endif
+
+/* Disable GCC -Wpedantic if using __has_c_attribute and this is not C23+. */
+#if (defined __has_c_attribute && _GL_GNUC_PREREQ (4, 6) \
+ && (defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) <= 201710)
+# pragma GCC diagnostic ignored "-Wpedantic"
+#endif
+
+]dnl There is no _GL_ATTRIBUTE_ALIGNED; use stdalign's alignas instead.
+[
+/* _GL_ATTRIBUTE_ALLOC_SIZE ((N)) declares that the Nth argument of the function
+ is the size of the returned memory block.
+ _GL_ATTRIBUTE_ALLOC_SIZE ((M, N)) declares that the Mth argument multiplied
+ by the Nth argument of the function is the size of the returned memory block.
+ */
+/* Applies to: function, pointer to function, function types. */
+#ifndef _GL_ATTRIBUTE_ALLOC_SIZE
+# if _GL_HAS_ATTRIBUTE (alloc_size)
+# define _GL_ATTRIBUTE_ALLOC_SIZE(args) __attribute__ ((__alloc_size__ args))
+# else
+# define _GL_ATTRIBUTE_ALLOC_SIZE(args)
+# endif
+#endif
+
+/* _GL_ATTRIBUTE_ALWAYS_INLINE tells that the compiler should always inline the
+ function and report an error if it cannot do so. */
+/* Applies to: function. */
+#ifndef _GL_ATTRIBUTE_ALWAYS_INLINE
+# if _GL_HAS_ATTRIBUTE (always_inline)
+# define _GL_ATTRIBUTE_ALWAYS_INLINE __attribute__ ((__always_inline__))
+# else
+# define _GL_ATTRIBUTE_ALWAYS_INLINE
+# endif
+#endif
+
+/* _GL_ATTRIBUTE_ARTIFICIAL declares that the function is not important to show
+ in stack traces when debugging. The compiler should omit the function from
+ stack traces. */
+/* Applies to: function. */
+#ifndef _GL_ATTRIBUTE_ARTIFICIAL
+# if _GL_HAS_ATTRIBUTE (artificial)
+# define _GL_ATTRIBUTE_ARTIFICIAL __attribute__ ((__artificial__))
+# else
+# define _GL_ATTRIBUTE_ARTIFICIAL
+# endif
+#endif
+
+/* _GL_ATTRIBUTE_COLD declares that the function is rarely executed. */
+/* Applies to: functions. */
+/* Avoid __attribute__ ((cold)) on MinGW; see thread starting at
+ .
+ Also, Oracle Studio 12.6 requires 'cold' not '__cold__'. */
+#ifndef _GL_ATTRIBUTE_COLD
+# if _GL_HAS_ATTRIBUTE (cold) && !defined __MINGW32__
+# ifndef __SUNPRO_C
+# define _GL_ATTRIBUTE_COLD __attribute__ ((__cold__))
+# else
+# define _GL_ATTRIBUTE_COLD __attribute__ ((cold))
+# endif
+# else
+# define _GL_ATTRIBUTE_COLD
+# endif
+#endif
+
+/* _GL_ATTRIBUTE_CONST declares that it is OK for a compiler to omit duplicate
+ calls to the function with the same arguments.
+ This attribute is safe for a function that neither depends on nor affects
+ observable state, and always returns exactly once - e.g., does not loop
+ forever, and does not call longjmp.
+ (This attribute is stricter than _GL_ATTRIBUTE_PURE.) */
+/* Applies to: functions. */
+#ifndef _GL_ATTRIBUTE_CONST
+# if _GL_HAS_ATTRIBUTE (const)
+# define _GL_ATTRIBUTE_CONST __attribute__ ((__const__))
+# else
+# define _GL_ATTRIBUTE_CONST
+# endif
+#endif
+
+/* _GL_ATTRIBUTE_DEALLOC (F, I) declares that the function returns pointers
+ that can be freed by passing them as the Ith argument to the
+ function F.
+ _GL_ATTRIBUTE_DEALLOC_FREE declares that the function returns pointers that
+ can be freed via 'free'; it can be used only after declaring 'free'. */
+/* Applies to: functions. Cannot be used on inline functions. */
+#ifndef _GL_ATTRIBUTE_DEALLOC
+# if _GL_GNUC_PREREQ (11, 0)
+# define _GL_ATTRIBUTE_DEALLOC(f, i) __attribute__ ((__malloc__ (f, i)))
+# else
+# define _GL_ATTRIBUTE_DEALLOC(f, i)
+# endif
+#endif
+/* If gnulib's or has already defined this macro, continue
+ to use this earlier definition, since may not have been included
+ yet. */
+#ifndef _GL_ATTRIBUTE_DEALLOC_FREE
+# if defined __cplusplus && defined __GNUC__ && !defined __clang__
+/* Work around GCC bug */
+# define _GL_ATTRIBUTE_DEALLOC_FREE \
+ _GL_ATTRIBUTE_DEALLOC ((void (*) (void *)) free, 1)
+# else
+# define _GL_ATTRIBUTE_DEALLOC_FREE \
+ _GL_ATTRIBUTE_DEALLOC (free, 1)
+# endif
+#endif
+
+/* _GL_ATTRIBUTE_DEPRECATED: Declares that an entity is deprecated.
+ The compiler may warn if the entity is used. */
+/* Applies to:
+ - function, variable,
+ - struct, union, struct/union member,
+ - enumeration, enumeration item,
+ - typedef,
+ in C++ also: namespace, class, template specialization. */
+#ifndef _GL_ATTRIBUTE_DEPRECATED
+# ifdef __has_c_attribute
+# if __has_c_attribute (__deprecated__)
+# define _GL_ATTRIBUTE_DEPRECATED [[__deprecated__]]
+# endif
+# endif
+# if !defined _GL_ATTRIBUTE_DEPRECATED && _GL_HAS_ATTRIBUTE (deprecated)
+# define _GL_ATTRIBUTE_DEPRECATED __attribute__ ((__deprecated__))
+# endif
+# ifndef _GL_ATTRIBUTE_DEPRECATED
+# define _GL_ATTRIBUTE_DEPRECATED
+# endif
+#endif
+
+/* _GL_ATTRIBUTE_ERROR(msg) requests an error if a function is called and
+ the function call is not optimized away.
+ _GL_ATTRIBUTE_WARNING(msg) requests a warning if a function is called and
+ the function call is not optimized away. */
+/* Applies to: functions. */
+#if !(defined _GL_ATTRIBUTE_ERROR && defined _GL_ATTRIBUTE_WARNING)
+# if _GL_HAS_ATTRIBUTE (error)
+# define _GL_ATTRIBUTE_ERROR(msg) __attribute__ ((__error__ (msg)))
+# define _GL_ATTRIBUTE_WARNING(msg) __attribute__ ((__warning__ (msg)))
+# elif _GL_HAS_ATTRIBUTE (diagnose_if)
+# define _GL_ATTRIBUTE_ERROR(msg) __attribute__ ((__diagnose_if__ (1, msg, "error")))
+# define _GL_ATTRIBUTE_WARNING(msg) __attribute__ ((__diagnose_if__ (1, msg, "warning")))
+# else
+# define _GL_ATTRIBUTE_ERROR(msg)
+# define _GL_ATTRIBUTE_WARNING(msg)
+# endif
+#endif
+
+/* _GL_ATTRIBUTE_EXTERNALLY_VISIBLE declares that the entity should remain
+ visible to debuggers etc., even with '-fwhole-program'. */
+/* Applies to: functions, variables. */
+#ifndef _GL_ATTRIBUTE_EXTERNALLY_VISIBLE
+# if _GL_HAS_ATTRIBUTE (externally_visible)
+# define _GL_ATTRIBUTE_EXTERNALLY_VISIBLE __attribute__ ((externally_visible))
+# else
+# define _GL_ATTRIBUTE_EXTERNALLY_VISIBLE
+# endif
+#endif
+
+/* _GL_ATTRIBUTE_FALLTHROUGH declares that it is not a programming mistake if
+ the control flow falls through to the immediately following 'case' or
+ 'default' label. The compiler should not warn in this case. */
+/* Applies to: Empty statement (;), inside a 'switch' statement. */
+/* Always expands to something. */
+#ifndef _GL_ATTRIBUTE_FALLTHROUGH
+# ifdef __has_c_attribute
+# if __has_c_attribute (__fallthrough__)
+# define _GL_ATTRIBUTE_FALLTHROUGH [[__fallthrough__]]
+# endif
+# endif
+# if !defined _GL_ATTRIBUTE_FALLTHROUGH && _GL_HAS_ATTRIBUTE (fallthrough)
+# define _GL_ATTRIBUTE_FALLTHROUGH __attribute__ ((__fallthrough__))
+# endif
+# ifndef _GL_ATTRIBUTE_FALLTHROUGH
+# define _GL_ATTRIBUTE_FALLTHROUGH ((void) 0)
+# endif
+#endif
+
+/* _GL_ATTRIBUTE_FORMAT ((ARCHETYPE, STRING-INDEX, FIRST-TO-CHECK))
+ declares that the STRING-INDEXth function argument is a format string of
+ style ARCHETYPE, which is one of:
+ printf, gnu_printf
+ scanf, gnu_scanf,
+ strftime, gnu_strftime,
+ strfmon,
+ or the same thing prefixed and suffixed with '__'.
+ If FIRST-TO-CHECK is not 0, arguments starting at FIRST-TO_CHECK
+ are suitable for the format string. */
+/* Applies to: functions. */
+#ifndef _GL_ATTRIBUTE_FORMAT
+# if _GL_HAS_ATTRIBUTE (format)
+# define _GL_ATTRIBUTE_FORMAT(spec) __attribute__ ((__format__ spec))
+# else
+# define _GL_ATTRIBUTE_FORMAT(spec)
+# endif
+#endif
+
+/* _GL_ATTRIBUTE_LEAF declares that if the function is called from some other
+ compilation unit, it executes code from that unit only by return or by
+ exception handling. This declaration lets the compiler optimize that unit
+ more aggressively. */
+/* Applies to: functions. */
+#ifndef _GL_ATTRIBUTE_LEAF
+# if _GL_HAS_ATTRIBUTE (leaf)
+# define _GL_ATTRIBUTE_LEAF __attribute__ ((__leaf__))
+# else
+# define _GL_ATTRIBUTE_LEAF
+# endif
+#endif
+
+/* _GL_ATTRIBUTE_MALLOC declares that the function returns a pointer to freshly
+ allocated memory. */
+/* Applies to: functions. */
+#ifndef _GL_ATTRIBUTE_MALLOC
+# if _GL_HAS_ATTRIBUTE (malloc)
+# define _GL_ATTRIBUTE_MALLOC __attribute__ ((__malloc__))
+# else
+# define _GL_ATTRIBUTE_MALLOC
+# endif
+#endif
+
+/* _GL_ATTRIBUTE_MAY_ALIAS declares that pointers to the type may point to the
+ same storage as pointers to other types. Thus this declaration disables
+ strict aliasing optimization. */
+/* Applies to: types. */
+/* Oracle Studio 12.6 mishandles may_alias despite __has_attribute OK. */
+#ifndef _GL_ATTRIBUTE_MAY_ALIAS
+# if _GL_HAS_ATTRIBUTE (may_alias) && !defined __SUNPRO_C
+# define _GL_ATTRIBUTE_MAY_ALIAS __attribute__ ((__may_alias__))
+# else
+# define _GL_ATTRIBUTE_MAY_ALIAS
+# endif
+#endif
+
+/* _GL_ATTRIBUTE_MAYBE_UNUSED declares that it is not a programming mistake if
+ the entity is not used. The compiler should not warn if the entity is not
+ used. */
+/* Applies to:
+ - function, variable,
+ - struct, union, struct/union member,
+ - enumeration, enumeration item,
+ - typedef,
+ in C++ also: class. */
+/* In C++ and C23, this is spelled [[__maybe_unused__]].
+ GCC's syntax is __attribute__ ((__unused__)).
+ clang supports both syntaxes. Except that with clang ≥ 6, < 10, in C++ mode,
+ __has_c_attribute (__maybe_unused__) yields true but the use of
+ [[__maybe_unused__]] nevertheless produces a warning. */
+#ifndef _GL_ATTRIBUTE_MAYBE_UNUSED
+# if defined __clang__ && defined __cplusplus
+# if !defined __apple_build_version__ && __clang_major__ >= 10
+# define _GL_ATTRIBUTE_MAYBE_UNUSED [[__maybe_unused__]]
+# endif
+# elif defined __has_c_attribute
+# if __has_c_attribute (__maybe_unused__)
+# define _GL_ATTRIBUTE_MAYBE_UNUSED [[__maybe_unused__]]
+# endif
+# endif
+# ifndef _GL_ATTRIBUTE_MAYBE_UNUSED
+# define _GL_ATTRIBUTE_MAYBE_UNUSED _GL_ATTRIBUTE_UNUSED
+# endif
+#endif
+/* Alternative spelling of this macro, for convenience and for
+ compatibility with glibc/include/libc-symbols.h. */
+#define _GL_UNUSED _GL_ATTRIBUTE_MAYBE_UNUSED
+/* Earlier spellings of this macro. */
+#define _UNUSED_PARAMETER_ _GL_ATTRIBUTE_MAYBE_UNUSED
+
+/* _GL_ATTRIBUTE_NODISCARD declares that the caller of the function should not
+ discard the return value. The compiler may warn if the caller does not use
+ the return value, unless the caller uses something like ignore_value. */
+/* Applies to: function, enumeration, class. */
+#ifndef _GL_ATTRIBUTE_NODISCARD
+# if defined __clang__ && defined __cplusplus
+ /* With clang up to 15.0.6 (at least), in C++ mode, [[__nodiscard__]] produces
+ a warning.
+ The 1000 below means a yet unknown threshold. When clang++ version X
+ starts supporting [[__nodiscard__]] without warning about it, you can
+ replace the 1000 with X. */
+# if __clang_major__ >= 1000
+# define _GL_ATTRIBUTE_NODISCARD [[__nodiscard__]]
+# endif
+# elif defined __has_c_attribute
+# if __has_c_attribute (__nodiscard__)
+# define _GL_ATTRIBUTE_NODISCARD [[__nodiscard__]]
+# endif
+# endif
+# if !defined _GL_ATTRIBUTE_NODISCARD && _GL_HAS_ATTRIBUTE (warn_unused_result)
+# define _GL_ATTRIBUTE_NODISCARD __attribute__ ((__warn_unused_result__))
+# endif
+# ifndef _GL_ATTRIBUTE_NODISCARD
+# define _GL_ATTRIBUTE_NODISCARD
+# endif
+#endif
+
+/* _GL_ATTRIBUTE_NOINLINE tells that the compiler should not inline the
+ function. */
+/* Applies to: functions. */
+#ifndef _GL_ATTRIBUTE_NOINLINE
+# if _GL_HAS_ATTRIBUTE (noinline)
+# define _GL_ATTRIBUTE_NOINLINE __attribute__ ((__noinline__))
+# else
+# define _GL_ATTRIBUTE_NOINLINE
+# endif
+#endif
+
+/* _GL_ATTRIBUTE_NONNULL ((N1, N2,...)) declares that the arguments N1, N2,...
+ must not be NULL.
+ _GL_ATTRIBUTE_NONNULL () declares that all pointer arguments must not be
+ null. */
+/* Applies to: functions. */
+#ifndef _GL_ATTRIBUTE_NONNULL
+# if _GL_HAS_ATTRIBUTE (nonnull)
+# define _GL_ATTRIBUTE_NONNULL(args) __attribute__ ((__nonnull__ args))
+# else
+# define _GL_ATTRIBUTE_NONNULL(args)
+# endif
+#endif
+
+/* _GL_ATTRIBUTE_NONSTRING declares that the contents of a character array is
+ not meant to be NUL-terminated. */
+/* Applies to: struct/union members and variables that are arrays of element
+ type '[[un]signed] char'. */
+#ifndef _GL_ATTRIBUTE_NONSTRING
+# if _GL_HAS_ATTRIBUTE (nonstring)
+# define _GL_ATTRIBUTE_NONSTRING __attribute__ ((__nonstring__))
+# else
+# define _GL_ATTRIBUTE_NONSTRING
+# endif
+#endif
+
+/* There is no _GL_ATTRIBUTE_NORETURN; use _Noreturn instead. */
+
+/* _GL_ATTRIBUTE_NOTHROW declares that the function does not throw exceptions.
+ */
+/* Applies to: functions. */
+#ifndef _GL_ATTRIBUTE_NOTHROW
+# if _GL_HAS_ATTRIBUTE (nothrow) && !defined __cplusplus
+# define _GL_ATTRIBUTE_NOTHROW __attribute__ ((__nothrow__))
+# else
+# define _GL_ATTRIBUTE_NOTHROW
+# endif
+#endif
+
+/* _GL_ATTRIBUTE_PACKED declares:
+ For struct members: The member has the smallest possible alignment.
+ For struct, union, class: All members have the smallest possible alignment,
+ minimizing the memory required. */
+/* Applies to: struct members, struct, union,
+ in C++ also: class. */
+#ifndef _GL_ATTRIBUTE_PACKED
+# if _GL_HAS_ATTRIBUTE (packed)
+# define _GL_ATTRIBUTE_PACKED __attribute__ ((__packed__))
+# else
+# define _GL_ATTRIBUTE_PACKED
+# endif
+#endif
+
+/* _GL_ATTRIBUTE_PURE declares that It is OK for a compiler to omit duplicate
+ calls to the function with the same arguments if observable state is not
+ changed between calls.
+ This attribute is safe for a function that does not affect
+ observable state, and always returns exactly once.
+ (This attribute is looser than _GL_ATTRIBUTE_CONST.) */
+/* Applies to: functions. */
+#ifndef _GL_ATTRIBUTE_PURE
+# if _GL_HAS_ATTRIBUTE (pure)
+# define _GL_ATTRIBUTE_PURE __attribute__ ((__pure__))
+# else
+# define _GL_ATTRIBUTE_PURE
+# endif
+#endif
+
+/* _GL_ATTRIBUTE_RETURNS_NONNULL declares that the function's return value is
+ a non-NULL pointer. */
+/* Applies to: functions. */
+#ifndef _GL_ATTRIBUTE_RETURNS_NONNULL
+# if _GL_HAS_ATTRIBUTE (returns_nonnull)
+# define _GL_ATTRIBUTE_RETURNS_NONNULL __attribute__ ((__returns_nonnull__))
+# else
+# define _GL_ATTRIBUTE_RETURNS_NONNULL
+# endif
+#endif
+
+/* _GL_ATTRIBUTE_SENTINEL(pos) declares that the variadic function expects a
+ trailing NULL argument.
+ _GL_ATTRIBUTE_SENTINEL () - The last argument is NULL (requires C99).
+ _GL_ATTRIBUTE_SENTINEL ((N)) - The (N+1)st argument from the end is NULL. */
+/* Applies to: functions. */
+#ifndef _GL_ATTRIBUTE_SENTINEL
+# if _GL_HAS_ATTRIBUTE (sentinel)
+# define _GL_ATTRIBUTE_SENTINEL(pos) __attribute__ ((__sentinel__ pos))
+# else
+# define _GL_ATTRIBUTE_SENTINEL(pos)
+# endif
+#endif
+
+/* A helper macro. Don't use it directly. */
+#ifndef _GL_ATTRIBUTE_UNUSED
+# if _GL_HAS_ATTRIBUTE (unused)
+# define _GL_ATTRIBUTE_UNUSED __attribute__ ((__unused__))
+# else
+# define _GL_ATTRIBUTE_UNUSED
+# endif
+#endif
+
+]dnl There is no _GL_ATTRIBUTE_VISIBILITY; see m4/visibility.m4 instead.
+[
+/* _GL_UNUSED_LABEL; declares that it is not a programming mistake if the
+ immediately preceding label is not used. The compiler should not warn
+ if the label is not used. */
+/* Applies to: label (both in C and C++). */
+/* Note that g++ < 4.5 does not support the '__attribute__ ((__unused__)) ;'
+ syntax. But clang does. */
+#ifndef _GL_UNUSED_LABEL
+# if !(defined __cplusplus && !_GL_GNUC_PREREQ (4, 5)) || defined __clang__
+# define _GL_UNUSED_LABEL _GL_ATTRIBUTE_UNUSED
+# else
+# define _GL_UNUSED_LABEL
+# endif
+#endif
+])
+ AH_VERBATIM([async_safe],
+[/* The _GL_ASYNC_SAFE marker should be attached to functions that are
+ signal handlers (for signals other than SIGABRT, SIGPIPE) or can be
+ invoked from such signal handlers. Such functions have some restrictions:
+ * All functions that it calls should be marked _GL_ASYNC_SAFE as well,
+ or should be listed as async-signal-safe in POSIX
+
+ section 2.4.3. Note that malloc(), sprintf(), and fwrite(), in
+ particular, are NOT async-signal-safe.
+ * All memory locations (variables and struct fields) that these functions
+ access must be marked 'volatile'. This holds for both read and write
+ accesses. Otherwise the compiler might optimize away stores to and
+ reads from such locations that occur in the program, depending on its
+ data flow analysis. For example, when the program contains a loop
+ that is intended to inspect a variable set from within a signal handler
+ while (!signal_occurred)
+ ;
+ the compiler is allowed to transform this into an endless loop if the
+ variable 'signal_occurred' is not declared 'volatile'.
+ Additionally, recall that:
+ * A signal handler should not modify errno (except if it is a handler
+ for a fatal signal and ends by raising the same signal again, thus
+ provoking the termination of the process). If it invokes a function
+ that may clobber errno, it needs to save and restore the value of
+ errno. */
+#define _GL_ASYNC_SAFE
+])
+ AH_VERBATIM([micro_optimizations],
+[/* _GL_CMP (n1, n2) performs a three-valued comparison on n1 vs. n2, where
+ n1 and n2 are expressions without side effects, that evaluate to real
+ numbers (excluding NaN).
+ It returns
+ 1 if n1 > n2
+ 0 if n1 == n2
+ -1 if n1 < n2
+ The naïve code (n1 > n2 ? 1 : n1 < n2 ? -1 : 0) produces a conditional
+ jump with nearly all GCC versions up to GCC 10.
+ This variant (n1 < n2 ? -1 : n1 > n2) produces a conditional with many
+ GCC versions up to GCC 9.
+ The better code (n1 > n2) - (n1 < n2) from Hacker's Delight § 2-9
+ avoids conditional jumps in all GCC versions >= 3.4. */
+#define _GL_CMP(n1, n2) (((n1) > (n2)) - ((n1) < (n2)))
+])
+ dnl Hint which direction to take regarding cross-compilation guesses:
+ dnl When a user installs a program on a platform they are not intimately
+ dnl familiar with, --enable-cross-guesses=conservative is the appropriate
+ dnl choice. It implements the "If we don't know, assume the worst" principle.
+ dnl However, when an operating system developer (on a platform which is not
+ dnl yet known to gnulib) builds packages for their platform, they want to
+ dnl expose, not hide, possible platform bugs; in this case,
+ dnl --enable-cross-guesses=risky is the appropriate choice.
+ dnl Sets the variables
+ dnl gl_cross_guess_normal (to be used when 'yes' is good and 'no' is bad),
+ dnl gl_cross_guess_inverted (to be used when 'no' is good and 'yes' is bad).
+ AC_ARG_ENABLE([cross-guesses],
+ [AS_HELP_STRING([--enable-cross-guesses={conservative|risky}],
+ [specify policy for cross-compilation guesses])],
+ [if test "x$enableval" != xconservative && test "x$enableval" != xrisky; then
+ AC_MSG_WARN([invalid argument supplied to --enable-cross-guesses])
+ enableval=conservative
+ fi
+ gl_cross_guesses="$enableval"],
+ [gl_cross_guesses=conservative])
+ if test $gl_cross_guesses = risky; then
+ gl_cross_guess_normal="guessing yes"
+ gl_cross_guess_inverted="guessing no"
+ else
+ gl_cross_guess_normal="guessing no"
+ gl_cross_guess_inverted="guessing yes"
+ fi
+ dnl Preparation for running test programs:
+ dnl Tell glibc to write diagnostics from -D_FORTIFY_SOURCE=2 to stderr, not
+ dnl to /dev/tty, so they can be redirected to log files. Such diagnostics
+ dnl arise e.g., in the macros gl_PRINTF_DIRECTIVE_N, gl_SNPRINTF_DIRECTIVE_N.
+ LIBC_FATAL_STDERR_=1
+ export LIBC_FATAL_STDERR_
+])
+
+# gl_MODULE_INDICATOR_INIT_VARIABLE([variablename])
+# gl_MODULE_INDICATOR_INIT_VARIABLE([variablename], [initialvalue])
+# initializes the shell variable that indicates the presence of the given module
+# as a C preprocessor expression.
+AC_DEFUN([gl_MODULE_INDICATOR_INIT_VARIABLE],
+[
+ GL_MODULE_INDICATOR_PREFIX[]_[$1]=m4_if([$2], , [0], [$2])
+ AC_SUBST(GL_MODULE_INDICATOR_PREFIX[]_[$1])
+])
+
+# gl_MODULE_INDICATOR_CONDITION
+# expands to a C preprocessor expression that evaluates to 1 or 0, depending
+# whether a gnulib module that has been requested shall be considered present
+# or not.
+m4_define([gl_MODULE_INDICATOR_CONDITION], [1])
+
+# gl_MODULE_INDICATOR_SET_VARIABLE([modulename])
+# sets the shell variable that indicates the presence of the given module to
+# a C preprocessor expression that will evaluate to 1.
+AC_DEFUN([gl_MODULE_INDICATOR_SET_VARIABLE],
+[
+ gl_MODULE_INDICATOR_SET_VARIABLE_AUX(
+ [GL_MODULE_INDICATOR_PREFIX[]_GNULIB_[]m4_translit([[$1]],
+ [abcdefghijklmnopqrstuvwxyz./-],
+ [ABCDEFGHIJKLMNOPQRSTUVWXYZ___])],
+ [gl_MODULE_INDICATOR_CONDITION])
+])
+
+# gl_MODULE_INDICATOR_SET_VARIABLE_AUX([variable])
+# modifies the shell variable to include the gl_MODULE_INDICATOR_CONDITION.
+# The shell variable's value is a C preprocessor expression that evaluates
+# to 0 or 1.
+AC_DEFUN([gl_MODULE_INDICATOR_SET_VARIABLE_AUX],
+[
+ m4_if(m4_defn([gl_MODULE_INDICATOR_CONDITION]), [1],
+ [
+ dnl Simplify the expression VALUE || 1 to 1.
+ $1=1
+ ],
+ [gl_MODULE_INDICATOR_SET_VARIABLE_AUX_OR([$1],
+ [gl_MODULE_INDICATOR_CONDITION])])
+])
+
+# gl_MODULE_INDICATOR_SET_VARIABLE_AUX_OR([variable], [condition])
+# modifies the shell variable to include the given condition. The shell
+# variable's value is a C preprocessor expression that evaluates to 0 or 1.
+AC_DEFUN([gl_MODULE_INDICATOR_SET_VARIABLE_AUX_OR],
+[
+ dnl Simplify the expression 1 || CONDITION to 1.
+ if test "$[]$1" != 1; then
+ dnl Simplify the expression 0 || CONDITION to CONDITION.
+ if test "$[]$1" = 0; then
+ $1=$2
+ else
+ $1="($[]$1 || $2)"
+ fi
+ fi
+])
+
+# gl_MODULE_INDICATOR([modulename])
+# defines a C macro indicating the presence of the given module
+# in a location where it can be used.
+# | Value | Value |
+# | in lib/ | in tests/ |
+# --------------------------------------------+---------+-----------+
+# Module present among main modules: | 1 | 1 |
+# --------------------------------------------+---------+-----------+
+# Module present among tests-related modules: | 0 | 1 |
+# --------------------------------------------+---------+-----------+
+# Module not present at all: | 0 | 0 |
+# --------------------------------------------+---------+-----------+
+AC_DEFUN([gl_MODULE_INDICATOR],
+[
+ AC_DEFINE_UNQUOTED([GNULIB_]m4_translit([[$1]],
+ [abcdefghijklmnopqrstuvwxyz./-],
+ [ABCDEFGHIJKLMNOPQRSTUVWXYZ___]),
+ [gl_MODULE_INDICATOR_CONDITION],
+ [Define to a C preprocessor expression that evaluates to 1 or 0,
+ depending whether the gnulib module $1 shall be considered present.])
+])
+
+# gl_MODULE_INDICATOR_FOR_TESTS([modulename])
+# defines a C macro indicating the presence of the given module
+# in lib or tests. This is useful to determine whether the module
+# should be tested.
+# | Value | Value |
+# | in lib/ | in tests/ |
+# --------------------------------------------+---------+-----------+
+# Module present among main modules: | 1 | 1 |
+# --------------------------------------------+---------+-----------+
+# Module present among tests-related modules: | 1 | 1 |
+# --------------------------------------------+---------+-----------+
+# Module not present at all: | 0 | 0 |
+# --------------------------------------------+---------+-----------+
+AC_DEFUN([gl_MODULE_INDICATOR_FOR_TESTS],
+[
+ AC_DEFINE([GNULIB_TEST_]m4_translit([[$1]],
+ [abcdefghijklmnopqrstuvwxyz./-],
+ [ABCDEFGHIJKLMNOPQRSTUVWXYZ___]), [1],
+ [Define to 1 when the gnulib module $1 should be tested.])
+])
+
+# gl_ASSERT_NO_GNULIB_POSIXCHECK
+# asserts that there will never be a need to #define GNULIB_POSIXCHECK.
+# and thereby enables an optimization of configure and config.h.
+# Used by Emacs.
+AC_DEFUN([gl_ASSERT_NO_GNULIB_POSIXCHECK],
+[
+ dnl Override gl_WARN_ON_USE_PREPARE.
+ dnl But hide this definition from 'aclocal'.
+ AC_DEFUN([gl_W][ARN_ON_USE_PREPARE], [])
+])
+
+# gl_ASSERT_NO_GNULIB_TESTS
+# asserts that there will be no gnulib tests in the scope of the configure.ac
+# and thereby enables an optimization of config.h.
+# Used by Emacs.
+AC_DEFUN([gl_ASSERT_NO_GNULIB_TESTS],
+[
+ dnl Override gl_MODULE_INDICATOR_FOR_TESTS.
+ AC_DEFUN([gl_MODULE_INDICATOR_FOR_TESTS], [])
+])
+
+# Test whether exists.
+# Set HAVE_FEATURES_H.
+AC_DEFUN([gl_FEATURES_H],
+[
+ AC_CHECK_HEADERS_ONCE([features.h])
+ if test $ac_cv_header_features_h = yes; then
+ HAVE_FEATURES_H=1
+ else
+ HAVE_FEATURES_H=0
+ fi
+ AC_SUBST([HAVE_FEATURES_H])
+])
+
+# gl_PROG_CC_C99
+# Modifies the value of the shell variable CC in an attempt to make $CC
+# understand ISO C99 source code.
+AC_DEFUN([gl_PROG_CC_C99],
+[
+ dnl Just use AC_PROG_CC_C99.
+ dnl When AC_PROG_CC_C99 and AC_PROG_CC_STDC are used together, the substituted
+ dnl value of CC will contain the C99 enabling options twice. But this is only
+ dnl a cosmetic problem.
+ dnl With Autoconf >= 2.70, use AC_PROG_CC since it implies AC_PROG_CC_C99;
+ dnl this avoids a "warning: The macro `AC_PROG_CC_C99' is obsolete."
+ m4_version_prereq([2.70],
+ [AC_REQUIRE([AC_PROG_CC])],
+ [AC_REQUIRE([AC_PROG_CC_C99])])
+])
+
+# gl_PROG_AR_RANLIB
+# Determines the values for AR, ARFLAGS, RANLIB that fit with the compiler.
+# The user can set the variables AR, ARFLAGS, RANLIB if he wants to override
+# the values.
+AC_DEFUN([gl_PROG_AR_RANLIB],
+[
+ dnl Minix 3 comes with two toolchains: The Amsterdam Compiler Kit compiler
+ dnl as "cc", and GCC as "gcc". They have different object file formats and
+ dnl library formats. In particular, the GNU binutils programs ar and ranlib
+ dnl produce libraries that work only with gcc, not with cc.
+ AC_REQUIRE([AC_PROG_CC])
+ dnl The '][' hides this use from 'aclocal'.
+ AC_BEFORE([$0], [A][M_PROG_AR])
+ AC_CACHE_CHECK([for Minix Amsterdam compiler], [gl_cv_c_amsterdam_compiler],
+ [
+ AC_EGREP_CPP([Amsterdam],
+ [
+#ifdef __ACK__
+Amsterdam
+#endif
+ ],
+ [gl_cv_c_amsterdam_compiler=yes],
+ [gl_cv_c_amsterdam_compiler=no])
+ ])
+
+ dnl Don't compete with AM_PROG_AR's decision about AR/ARFLAGS if we are not
+ dnl building with __ACK__.
+ if test $gl_cv_c_amsterdam_compiler = yes; then
+ if test -z "$AR"; then
+ AR='cc -c.a'
+ fi
+ if test -z "$ARFLAGS"; then
+ ARFLAGS='-o'
+ fi
+ else
+ dnl AM_PROG_AR was added in automake v1.11.2. AM_PROG_AR does not AC_SUBST
+ dnl ARFLAGS variable (it is filed into Makefile.in directly by automake
+ dnl script on-demand, if not specified by ./configure of course).
+ dnl Don't AC_REQUIRE the AM_PROG_AR otherwise the code for __ACK__ above
+ dnl will be ignored. Also, pay attention to call AM_PROG_AR in else block
+ dnl because AM_PROG_AR is written so it could re-set AR variable even for
+ dnl __ACK__. It may seem like its easier to avoid calling the macro here,
+ dnl but we need to AC_SUBST both AR/ARFLAGS (thus those must have some good
+ dnl default value and automake should usually know them).
+ dnl
+ dnl The '][' hides this use from 'aclocal'.
+ m4_ifdef([A][M_PROG_AR], [A][M_PROG_AR], [:])
+ fi
+
+ dnl In case the code above has not helped with setting AR/ARFLAGS, use
+ dnl Automake-documented default values for AR and ARFLAGS, but prefer
+ dnl ${host}-ar over ar (useful for cross-compiling).
+ AC_CHECK_TOOL([AR], [ar], [ar])
+ if test -z "$ARFLAGS"; then
+ ARFLAGS='cr'
+ fi
+
+ AC_SUBST([AR])
+ AC_SUBST([ARFLAGS])
+ if test -z "$RANLIB"; then
+ if test $gl_cv_c_amsterdam_compiler = yes; then
+ RANLIB=':'
+ else
+ dnl Use the ranlib program if it is available.
+ AC_PROG_RANLIB
+ fi
+ fi
+ AC_SUBST([RANLIB])
+])
+
+# AC_C_RESTRICT
+# This definition is copied from post-2.70 Autoconf and overrides the
+# AC_C_RESTRICT macro from autoconf 2.60..2.70.
+m4_version_prereq([2.70.1], [], [
+AC_DEFUN([AC_C_RESTRICT],
+[AC_CACHE_CHECK([for C/C++ restrict keyword], [ac_cv_c_restrict],
+ [ac_cv_c_restrict=no
+ # Put '__restrict__' first, to avoid problems with glibc and non-GCC; see:
+ # https://lists.gnu.org/archive/html/bug-autoconf/2016-02/msg00006.html
+ # Put 'restrict' last, because C++ lacks it.
+ for ac_kw in __restrict__ __restrict _Restrict restrict; do
+ AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[typedef int *int_ptr;
+ int foo (int_ptr $ac_kw ip) { return ip[0]; }
+ int bar (int [$ac_kw]); /* Catch GCC bug 14050. */
+ int bar (int ip[$ac_kw]) { return ip[0]; }
+ ]],
+ [[int s[1];
+ int *$ac_kw t = s;
+ t[0] = 0;
+ return foo (t) + bar (t);
+ ]])],
+ [ac_cv_c_restrict=$ac_kw])
+ test "$ac_cv_c_restrict" != no && break
+ done
+ ])
+ AH_VERBATIM([restrict],
+[/* Define to the equivalent of the C99 'restrict' keyword, or to
+ nothing if this is not supported. Do not define if restrict is
+ supported only directly. */
+#undef restrict
+/* Work around a bug in older versions of Sun C++, which did not
+ #define __restrict__ or support _Restrict or __restrict__
+ even though the corresponding Sun C compiler ended up with
+ "#define restrict _Restrict" or "#define restrict __restrict__"
+ in the previous line. This workaround can be removed once
+ we assume Oracle Developer Studio 12.5 (2016) or later. */
+#if defined __SUNPRO_CC && !defined __RESTRICT && !defined __restrict__
+# define _Restrict
+# define __restrict__
+#endif])
+ case $ac_cv_c_restrict in
+ restrict) ;;
+ no) AC_DEFINE([restrict], []) ;;
+ *) AC_DEFINE_UNQUOTED([restrict], [$ac_cv_c_restrict]) ;;
+ esac
+])# AC_C_RESTRICT
+])
+
+# gl_BIGENDIAN
+# is like AC_C_BIGENDIAN, except that it can be AC_REQUIREd.
+# Note that AC_REQUIRE([AC_C_BIGENDIAN]) does not work reliably because some
+# macros invoke AC_C_BIGENDIAN with arguments.
+AC_DEFUN([gl_BIGENDIAN],
+[
+ AC_C_BIGENDIAN
+])
+
+# A temporary file descriptor.
+# Must be less than 10, because dash 0.5.8 does not support redirections
+# with multi-digit file descriptors.
+m4_define([GL_TMP_FD], 9)
+
+# gl_SILENT(command)
+# executes command, but without the normal configure output.
+# This is useful when you want to invoke AC_CACHE_CHECK (or AC_CHECK_FUNC etc.)
+# inside another AC_CACHE_CHECK.
+AC_DEFUN([gl_SILENT],
+[
+ exec GL_TMP_FD>&AS_MESSAGE_FD AS_MESSAGE_FD>/dev/null
+ $1
+ exec AS_MESSAGE_FD>&GL_TMP_FD GL_TMP_FD>&-
+])
+
+# gl_CACHE_VAL_SILENT(cache-id, command-to-set-it)
+# is like AC_CACHE_VAL(cache-id, command-to-set-it), except that it does not
+# output a spurious "(cached)" mark in the midst of other configure output.
+# This macro should be used instead of AC_CACHE_VAL when it is not surrounded
+# by an AC_MSG_CHECKING/AC_MSG_RESULT pair.
+AC_DEFUN([gl_CACHE_VAL_SILENT],
+[
+ gl_SILENT([
+ AC_CACHE_VAL([$1], [$2])
+ ])
+])
+
+# gl_CONDITIONAL(conditional, condition)
+# is like AM_CONDITIONAL(conditional, condition), except that it does not
+# produce an error
+# configure: error: conditional "..." was never defined.
+# Usually this means the macro was only invoked conditionally.
+# when only invoked conditionally. Instead, in that case, both the _TRUE
+# and the _FALSE case are disabled.
+AC_DEFUN([gl_CONDITIONAL],
+[
+ pushdef([AC_CONFIG_COMMANDS_PRE], [:])dnl
+ AM_CONDITIONAL([$1], [$2])
+ popdef([AC_CONFIG_COMMANDS_PRE])dnl
+ if test -z "${[$1]_TRUE}" && test -z "${[$1]_FALSE}"; then
+ [$1]_TRUE='#'
+ [$1]_FALSE='#'
+ fi
+])
+
+# gl_CC_ALLOW_WARNINGS
+# sets and substitutes a variable GL_CFLAG_ALLOW_WARNINGS, to a $(CC) option
+# that reverts a preceding '-Werror' option, if available.
+# This is expected to be '-Wno-error' on gcc, clang (except clang/MSVC), xlclang
+# and empty otherwise.
+AC_DEFUN([gl_CC_ALLOW_WARNINGS],
+[
+ AC_REQUIRE([AC_PROG_CC])
+ AC_CACHE_CHECK([for C compiler option to allow warnings],
+ [gl_cv_cc_wallow],
+ [rm -f conftest*
+ echo 'int dummy;' > conftest.c
+ AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -c conftest.c 2>conftest1.err]) >/dev/null
+ AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -Wno-error -c conftest.c 2>conftest2.err]) >/dev/null
+ dnl Test the number of error output lines, because AIX xlc accepts the
+ dnl option '-Wno-error', just to produce a warning
+ dnl "Option -Wno-error was incorrectly specified. The option will be ignored."
+ dnl afterwards.
+ if test $? = 0 && test `wc -l < conftest1.err` = `wc -l < conftest2.err`; then
+ gl_cv_cc_wallow='-Wno-error'
+ else
+ gl_cv_cc_wallow=none
+ fi
+ rm -f conftest*
+ ])
+ case "$gl_cv_cc_wallow" in
+ none) GL_CFLAG_ALLOW_WARNINGS='' ;;
+ *) GL_CFLAG_ALLOW_WARNINGS="$gl_cv_cc_wallow" ;;
+ esac
+ AC_SUBST([GL_CFLAG_ALLOW_WARNINGS])
+])
+
+# gl_CXX_ALLOW_WARNINGS
+# sets and substitutes a variable GL_CXXFLAG_ALLOW_WARNINGS, to a $(CC) option
+# that reverts a preceding '-Werror' option, if available.
+AC_DEFUN([gl_CXX_ALLOW_WARNINGS],
+[
+ dnl Requires AC_PROG_CXX or gl_PROG_ANSI_CXX.
+ if test -n "$CXX" && test "$CXX" != no; then
+ AC_CACHE_CHECK([for C++ compiler option to allow warnings],
+ [gl_cv_cxx_wallow],
+ [rm -f conftest*
+ echo 'int dummy;' > conftest.cc
+ AC_TRY_COMMAND([${CXX-c++} $CXXFLAGS $CPPFLAGS -c conftest.cc 2>conftest1.err]) >/dev/null
+ AC_TRY_COMMAND([${CXX-c++} $CXXFLAGS $CPPFLAGS -Wno-error -c conftest.cc 2>conftest2.err]) >/dev/null
+ dnl Test the number of error output lines, because AIX xlC accepts the
+ dnl option '-Wno-error', just to produce a warning
+ dnl "Option -Wno-error was incorrectly specified. The option will be ignored."
+ dnl afterwards.
+ if test $? = 0 && test `wc -l < conftest1.err` = `wc -l < conftest2.err`; then
+ gl_cv_cxx_wallow='-Wno-error'
+ else
+ gl_cv_cxx_wallow=none
+ fi
+ rm -f conftest*
+ ])
+ case "$gl_cv_cxx_wallow" in
+ none) GL_CXXFLAG_ALLOW_WARNINGS='' ;;
+ *) GL_CXXFLAG_ALLOW_WARNINGS="$gl_cv_cxx_wallow" ;;
+ esac
+ else
+ GL_CXXFLAG_ALLOW_WARNINGS=''
+ fi
+ AC_SUBST([GL_CXXFLAG_ALLOW_WARNINGS])
+])
+
+# gl_CC_GNULIB_WARNINGS
+# sets and substitutes a variable GL_CFLAG_GNULIB_WARNINGS, to a $(CC) option
+# set that enables or disables warnings as suitable for the Gnulib coding style.
+AC_DEFUN([gl_CC_GNULIB_WARNINGS],
+[
+ AC_REQUIRE([gl_CC_ALLOW_WARNINGS])
+ dnl Assume that the compiler supports -Wno-* options only if it also supports
+ dnl -Wno-error.
+ GL_CFLAG_GNULIB_WARNINGS=''
+ if test -n "$GL_CFLAG_ALLOW_WARNINGS"; then
+ dnl Enable these warning options:
+ dnl
+ dnl GCC clang
+ dnl -Wno-cast-qual >= 3 >= 3.9
+ dnl -Wno-conversion >= 3 >= 3.9
+ dnl -Wno-float-conversion >= 4.9 >= 3.9
+ dnl -Wno-float-equal >= 3 >= 3.9
+ dnl -Wimplicit-fallthrough >= 7 >= 3.9
+ dnl -Wno-pedantic >= 4.8 >= 3.9
+ dnl -Wno-sign-compare >= 3 >= 3.9
+ dnl -Wno-sign-conversion >= 4.3 >= 3.9
+ dnl -Wno-type-limits >= 4.3 >= 3.9
+ dnl -Wno-undef >= 3 >= 3.9
+ dnl -Wno-unsuffixed-float-constants >= 4.5
+ dnl -Wno-unused-function >= 3 >= 3.9
+ dnl -Wno-unused-parameter >= 3 >= 3.9
+ dnl
+ cat > conftest.c <<\EOF
+ #if __GNUC__ >= 3 || (__clang_major__ + (__clang_minor__ >= 9) > 3)
+ -Wno-cast-qual
+ -Wno-conversion
+ -Wno-float-equal
+ -Wno-sign-compare
+ -Wno-undef
+ -Wno-unused-function
+ -Wno-unused-parameter
+ #endif
+ #if __GNUC__ + (__GNUC_MINOR__ >= 9) > 4 || (__clang_major__ + (__clang_minor__ >= 9) > 3)
+ -Wno-float-conversion
+ #endif
+ #if __GNUC__ >= 7 || (__clang_major__ + (__clang_minor__ >= 9) > 3)
+ -Wimplicit-fallthrough
+ #endif
+ #if __GNUC__ + (__GNUC_MINOR__ >= 8) > 4 || (__clang_major__ + (__clang_minor__ >= 9) > 3)
+ -Wno-pedantic
+ #endif
+ #if __GNUC__ + (__GNUC_MINOR__ >= 3) > 4 || (__clang_major__ + (__clang_minor__ >= 9) > 3)
+ -Wno-sign-conversion
+ -Wno-type-limits
+ #endif
+ #if __GNUC__ + (__GNUC_MINOR__ >= 5) > 4
+ -Wno-unsuffixed-float-constants
+ #endif
+EOF
+ gl_command="$CC $CFLAGS $CPPFLAGS -E conftest.c > conftest.out"
+ if AC_TRY_EVAL([gl_command]); then
+ gl_options=`grep -v '#' conftest.out`
+ for word in $gl_options; do
+ GL_CFLAG_GNULIB_WARNINGS="$GL_CFLAG_GNULIB_WARNINGS $word"
+ done
+ fi
+ rm -f conftest.c conftest.out
+ fi
+ AC_SUBST([GL_CFLAG_GNULIB_WARNINGS])
+])
+
+dnl gl_CONDITIONAL_HEADER([foo.h])
+dnl takes a shell variable GL_GENERATE_FOO_H (with value true or false) as input
+dnl and produces
+dnl - an AC_SUBSTed variable FOO_H that is either a file name or empty, based
+dnl on whether GL_GENERATE_FOO_H is true or false,
+dnl - an Automake conditional GL_GENERATE_FOO_H that evaluates to the value of
+dnl the shell variable GL_GENERATE_FOO_H.
+AC_DEFUN([gl_CONDITIONAL_HEADER],
+[
+ m4_pushdef([gl_header_name], AS_TR_SH(m4_toupper($1)))
+ m4_pushdef([gl_generate_var], [GL_GENERATE_]AS_TR_SH(m4_toupper($1)))
+ m4_pushdef([gl_generate_cond], [GL_GENERATE_]AS_TR_SH(m4_toupper($1)))
+ case "$gl_generate_var" in
+ false) gl_header_name='' ;;
+ true)
+ dnl It is OK to use a .h file in lib/ from within tests/, but not vice
+ dnl versa.
+ if test -z "$gl_header_name"; then
+ gl_header_name="${gl_source_base_prefix}$1"
+ fi
+ ;;
+ *) echo "*** gl_generate_var is not set correctly" 1>&2; exit 1 ;;
+ esac
+ AC_SUBST(gl_header_name)
+ gl_CONDITIONAL(gl_generate_cond, [$gl_generate_var])
+ m4_popdef([gl_generate_cond])
+ m4_popdef([gl_generate_var])
+ m4_popdef([gl_header_name])
+])
+
+dnl Preparations for gl_CHECK_FUNCS_MACOS.
+AC_DEFUN([gl_PREPARE_CHECK_FUNCS_MACOS],
+[
+ AC_REQUIRE([AC_CANONICAL_HOST])
+ AC_REQUIRE([gl_COMPILER_CLANG])
+ AC_CACHE_CHECK([for compiler option needed when checking for future declarations],
+ [gl_cv_compiler_check_future_option],
+ [case "$host_os" in
+ dnl This is only needed on macOS.
+ darwin*)
+ if test $gl_cv_compiler_clang = yes; then
+ dnl Test whether the compiler supports the option
+ dnl '-Werror=unguarded-availability-new'.
+ save_ac_compile="$ac_compile"
+ ac_compile="$ac_compile -Werror=unguarded-availability-new"
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]],[[]])],
+ [gl_cv_compiler_check_future_option='-Werror=unguarded-availability-new'],
+ [gl_cv_compiler_check_future_option=none])
+ ac_compile="$save_ac_compile"
+ else
+ gl_cv_compiler_check_future_option=none
+ fi
+ ;;
+ *) gl_cv_compiler_check_future_option=none ;;
+ esac
+ ])
+])
+
+dnl Pieces of the expansion of
+dnl gl_CHECK_FUNCS_ANDROID
+dnl gl_CHECK_FUNCS_MACOS
+dnl gl_CHECK_FUNCS_ANDROID_MACOS
+
+AC_DEFUN([gl_CHECK_FUNCS_DEFAULT_CASE],
+[
+ *)
+ AC_CHECK_FUNC([$1])
+ [gl_cv_onwards_func_][$1]=$[ac_cv_func_][$1]
+ ;;
+])
+
+AC_DEFUN([gl_CHECK_FUNCS_CASE_FOR_ANDROID],
+[
+ linux*-android*)
+ AC_CHECK_DECL([$1], , , [$2])
+ if test $[ac_cv_have_decl_][$1] = yes; then
+ AC_CHECK_FUNC([[$1]])
+ if test $[ac_cv_func_][$1] = yes; then
+ [gl_cv_onwards_func_][$1]=yes
+ else
+ dnl The function is declared but does not exist. This should not
+ dnl happen normally. But anyway, we know that a future version
+ dnl of Android will have the function.
+ [gl_cv_onwards_func_][$1]='future OS version'
+ fi
+ else
+ [gl_cv_onwards_func_][$1]='future OS version'
+ fi
+ ;;
+])
+
+AC_DEFUN([gl_CHECK_FUNCS_CASE_FOR_MACOS],
+[
+ darwin*)
+ if test "x$gl_cv_compiler_check_future_option" != "xnone"; then
+ dnl Use a compile test, not a link test.
+ save_ac_compile="$ac_compile"
+ ac_compile="$ac_compile $gl_cv_compiler_check_future_option"
+ save_ac_compile_for_check_decl="$ac_compile_for_check_decl"
+ ac_compile_for_check_decl="$ac_compile_for_check_decl $gl_cv_compiler_check_future_option"
+ unset [ac_cv_have_decl_][$1]
+ AC_CHECK_DECL([$1], , , [$2])
+ ac_compile="$save_ac_compile"
+ ac_compile_for_check_decl="$save_ac_compile_for_check_decl"
+ [ac_cv_func_][$1]="$[ac_cv_have_decl_][$1]"
+ if test $[ac_cv_func_][$1] = yes; then
+ [gl_cv_onwards_func_][$1]=yes
+ else
+ unset [ac_cv_have_decl_][$1]
+ AC_CHECK_DECL([$1], , , [$2])
+ if test $[ac_cv_have_decl_][$1] = yes; then
+ [gl_cv_onwards_func_][$1]='future OS version'
+ else
+ [gl_cv_onwards_func_][$1]=no
+ fi
+ fi
+ else
+ AC_CHECK_FUNC([$1])
+ [gl_cv_onwards_func_][$1]=$[ac_cv_func_][$1]
+ fi
+ ;;
+])
+
+AC_DEFUN([gl_CHECK_FUNCS_SET_RESULTS],
+[
+ case "$[gl_cv_onwards_func_][$1]" in
+ future*) [ac_cv_func_][$1]=no ;;
+ *) [ac_cv_func_][$1]=$[gl_cv_onwards_func_][$1] ;;
+ esac
+ if test $[ac_cv_func_][$1] = yes; then
+ AC_DEFINE([HAVE_]m4_translit([[$1]],
+ [abcdefghijklmnopqrstuvwxyz],
+ [ABCDEFGHIJKLMNOPQRSTUVWXYZ]),
+ [1], [Define to 1 if you have the `$1' function.])
+ fi
+])
+
+dnl gl_CHECK_FUNCS_ANDROID([func], [[#include ]])
+dnl is like AC_CHECK_FUNCS([func]), taking into account a portability problem
+dnl on Android.
+dnl
+dnl When code is compiled on Android, it is in the context of a certain
+dnl "Android API level", which indicates the minimum version of Android on
+dnl which the app can be installed. In other words, you don't compile for a
+dnl specific version of Android. You compile for all versions of Android,
+dnl onwards from the given API level.
+dnl Thus, the question "does the OS have the function func" has three possible
+dnl answers:
+dnl - yes, in all versions starting from the given API level,
+dnl - no, in no version,
+dnl - not in the given API level, but in a later version of Android.
+dnl
+dnl In detail, this works as follows:
+dnl If func was added to Android API level, say, 28, then the libc.so has the
+dnl symbol func always, whereas the header file declares func
+dnl conditionally:
+dnl #if __ANDROID_API__ >= 28
+dnl ... func (...) __INTRODUCED_IN(28);
+dnl #endif
+dnl Thus, when compiling with "clang -target armv7a-unknown-linux-android28",
+dnl the function func is declared and exists in libc.
+dnl Whereas when compiling with "clang -target armv7a-unknown-linux-android27",
+dnl the function func is not declared but exists in libc.
+dnl
+dnl This macro sets two variables:
+dnl - gl_cv_onwards_func_ to yes / no / "future OS version"
+dnl - ac_cv_func_ to yes / no / no
+dnl The first variable allows to distinguish all three cases.
+dnl The second variable is set, so that an invocation
+dnl gl_CHECK_FUNCS_ANDROID([func], [[#include ]])
+dnl can be used as a drop-in replacement for
+dnl AC_CHECK_FUNCS([func]).
+AC_DEFUN([gl_CHECK_FUNCS_ANDROID],
+[
+ AC_REQUIRE([AC_CANONICAL_HOST])
+ AC_CACHE_CHECK([for [$1]],
+ [[gl_cv_onwards_func_][$1]],
+ [gl_SILENT([
+ case "$host_os" in
+ gl_CHECK_FUNCS_CASE_FOR_ANDROID([$1], [$2])
+ gl_CHECK_FUNCS_DEFAULT_CASE([$1])
+ esac
+ ])
+ ])
+ gl_CHECK_FUNCS_SET_RESULTS([$1])
+])
+
+dnl gl_CHECK_FUNCS_MACOS([func], [[#include ]])
+dnl is like AC_CHECK_FUNCS([func]), taking into account a portability problem
+dnl on macOS.
+dnl
+dnl When code is compiled on macOS, it is in the context of a certain minimum
+dnl macOS version, that can be set through the option '-mmacosx-version-min='.
+dnl In other words, you don't compile for a specific version of macOS. You
+dnl compile for all versions of macOS, onwards from the given version.
+dnl Thus, the question "does the OS have the function func" has three possible
+dnl answers:
+dnl - yes, in all versions starting from the given version,
+dnl - no, in no version,
+dnl - not in the given version, but in a later version of macOS.
+dnl
+dnl In detail, this works as follows:
+dnl If func was added to, say, macOS version 13, then the libc has the
+dnl symbol func always, whereas the header file declares func
+dnl conditionally with a special availability attribute:
+dnl ... func (...) __attribute__((availability(macos,introduced=13.0)));
+dnl Thus, when compiling with "clang mmacosx-version-min=13", there is no
+dnl warning about the use of func, and the resulting binary
+dnl - runs fine on macOS 13,
+dnl - aborts with a dyld "Symbol not found" message on macOS 12.
+dnl Whereas, when compiling with "clang mmacosx-version-min=12", there is a
+dnl warning: 'func' is only available on macOS 13.0 or newer
+dnl [-Wunguarded-availability-new],
+dnl and the resulting binary
+dnl - runs fine on macOS 13,
+dnl - crashes with a SIGSEGV (signal 11) on macOS 12.
+dnl
+dnl This macro sets two variables:
+dnl - gl_cv_onwards_func_ to yes / no / "future OS version"
+dnl - ac_cv_func_ to yes / no / no
+dnl The first variable allows to distinguish all three cases.
+dnl The second variable is set, so that an invocation
+dnl gl_CHECK_FUNCS_MACOS([func], [[#include ]])
+dnl can be used as a drop-in replacement for
+dnl AC_CHECK_FUNCS([func]).
+AC_DEFUN([gl_CHECK_FUNCS_MACOS],
+[
+ AC_REQUIRE([AC_CANONICAL_HOST])
+ AC_REQUIRE([gl_PREPARE_CHECK_FUNCS_MACOS])
+ AC_CACHE_CHECK([for [$1]],
+ [[gl_cv_onwards_func_][$1]],
+ [gl_SILENT([
+ case "$host_os" in
+ gl_CHECK_FUNCS_CASE_FOR_MACOS([$1], [$2])
+ gl_CHECK_FUNCS_DEFAULT_CASE([$1])
+ esac
+ ])
+ ])
+ gl_CHECK_FUNCS_SET_RESULTS([$1])
+])
+
+dnl gl_CHECK_FUNCS_ANDROID_MACOS([func], [[#include ]])
+dnl is like AC_CHECK_FUNCS([func]), taking into account a portability problem
+dnl on Android and on macOS.
+dnl It is the combination of gl_CHECK_FUNCS_ANDROID and gl_CHECK_FUNCS_MACOS.
+AC_DEFUN([gl_CHECK_FUNCS_ANDROID_MACOS],
+[
+ AC_REQUIRE([AC_CANONICAL_HOST])
+ AC_REQUIRE([gl_PREPARE_CHECK_FUNCS_MACOS])
+ AC_CACHE_CHECK([for [$1]],
+ [[gl_cv_onwards_func_][$1]],
+ [gl_SILENT([
+ case "$host_os" in
+ gl_CHECK_FUNCS_CASE_FOR_ANDROID([$1], [$2])
+ gl_CHECK_FUNCS_CASE_FOR_MACOS([$1], [$2])
+ gl_CHECK_FUNCS_DEFAULT_CASE([$1])
+ esac
+ ])
+ ])
+ gl_CHECK_FUNCS_SET_RESULTS([$1])
+])
+
+dnl Expands to some code for use in .c programs that, on native Windows, defines
+dnl the Microsoft deprecated alias function names to the underscore-prefixed
+dnl actual function names. With this macro, these function names are available
+dnl without linking with '-loldnames' and without generating warnings.
+dnl Usage: Use it after all system header files are included.
+dnl #include <...>
+dnl #include <...>
+dnl ]GL_MDA_DEFINES[
+dnl ...
+AC_DEFUN([GL_MDA_DEFINES],[
+AC_REQUIRE([_GL_MDA_DEFINES])
+[$gl_mda_defines]
+])
+AC_DEFUN([_GL_MDA_DEFINES],
+[gl_mda_defines='
+#if defined _WIN32 && !defined __CYGWIN__
+#define access _access
+#define chdir _chdir
+#define chmod _chmod
+#define close _close
+#define creat _creat
+#define dup _dup
+#define dup2 _dup2
+#define ecvt _ecvt
+#define execl _execl
+#define execle _execle
+#define execlp _execlp
+#define execv _execv
+#define execve _execve
+#define execvp _execvp
+#define execvpe _execvpe
+#define fcloseall _fcloseall
+#define fcvt _fcvt
+#define fdopen _fdopen
+#define fileno _fileno
+#define gcvt _gcvt
+#define getcwd _getcwd
+#define getpid _getpid
+#define getw _getw
+#define isatty _isatty
+#define j0 _j0
+#define j1 _j1
+#define jn _jn
+#define lfind _lfind
+#define lsearch _lsearch
+#define lseek _lseek
+#define memccpy _memccpy
+#define mkdir _mkdir
+#define mktemp _mktemp
+#define open _open
+#define putenv _putenv
+#define putw _putw
+#define read _read
+#define rmdir _rmdir
+#define strdup _strdup
+#define swab _swab
+#define tempnam _tempnam
+#define tzset _tzset
+#define umask _umask
+#define unlink _unlink
+#define utime _utime
+#define wcsdup _wcsdup
+#define write _write
+#define y0 _y0
+#define y1 _y1
+#define yn _yn
+#endif
+'
+])
diff --git a/m4/gnulib/gnulib-comp.m4 b/m4/gnulib/gnulib-comp.m4
new file mode 100644
index 0000000..b362bcf
--- /dev/null
+++ b/m4/gnulib/gnulib-comp.m4
@@ -0,0 +1,320 @@
+# DO NOT EDIT! GENERATED AUTOMATICALLY!
+# Copyright (C) 2002-2023 Free Software Foundation, Inc.
+#
+# This file is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This file is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this file. If not, see .
+#
+# As a special exception to the GNU General Public License,
+# this file may be distributed as part of a program that
+# contains a configuration script generated by Autoconf, under
+# the same distribution terms as the rest of that program.
+#
+# Generated by gnulib-tool.
+#
+# This file represents the compiled summary of the specification in
+# gnulib-cache.m4. It lists the computed macro invocations that need
+# to be invoked from configure.ac.
+# In projects that use version control, this file can be treated like
+# other built files.
+
+
+# This macro should be invoked from ./configure.ac, in the section
+# "Checks for programs", right after AC_PROG_CC, and certainly before
+# any checks for libraries, header files, types and library functions.
+AC_DEFUN([gl_EARLY],
+[
+ m4_pattern_forbid([^gl_[A-Z]])dnl the gnulib macro namespace
+ m4_pattern_allow([^gl_ES$])dnl a valid locale name
+ m4_pattern_allow([^gl_LIBOBJS$])dnl a variable
+ m4_pattern_allow([^gl_LTLIBOBJS$])dnl a variable
+
+ # Pre-early section.
+ AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+ AC_REQUIRE([gl_PROG_AR_RANLIB])
+
+ # Code from module absolute-header:
+ # Code from module extensions:
+ # Code from module extern-inline:
+ # Code from module gen-header:
+ # Code from module getopt-gnu:
+ # Code from module getopt-posix:
+ # Code from module gettext-h:
+ # Code from module include_next:
+ # Code from module nocrash:
+ # Code from module snippet/arg-nonnull:
+ # Code from module snippet/c++defs:
+ # Code from module snippet/warn-on-use:
+ # Code from module ssize_t:
+ # Code from module stddef:
+ # Code from module sys_types:
+ # Code from module unistd:
+ # Code from module vararrays:
+])
+
+# This macro should be invoked from ./configure.ac, in the section
+# "Check for header files, types and library functions".
+AC_DEFUN([gl_INIT],
+[
+ AM_CONDITIONAL([GL_COND_LIBTOOL], [false])
+ gl_cond_libtool=false
+ gl_libdeps=
+ gl_ltlibdeps=
+ gl_m4_base='m4/gnulib'
+ m4_pushdef([AC_LIBOBJ], m4_defn([gl_LIBOBJ]))
+ m4_pushdef([AC_REPLACE_FUNCS], m4_defn([gl_REPLACE_FUNCS]))
+ m4_pushdef([AC_LIBSOURCES], m4_defn([gl_LIBSOURCES]))
+ m4_pushdef([gl_LIBSOURCES_LIST], [])
+ m4_pushdef([gl_LIBSOURCES_DIR], [])
+ m4_pushdef([GL_MACRO_PREFIX], [gl])
+ m4_pushdef([GL_MODULE_INDICATOR_PREFIX], [GL])
+ gl_COMMON
+ gl_source_base='gnulib'
+ gl_source_base_prefix=
+ AC_REQUIRE([gl_EXTERN_INLINE])
+ gl_FUNC_GETOPT_GNU
+ dnl Because of the way gl_FUNC_GETOPT_GNU is implemented (the gl_getopt_required
+ dnl mechanism), there is no need to do any AC_LIBOBJ or AC_SUBST here; they are
+ dnl done in the getopt-posix module.
+ gl_FUNC_GETOPT_POSIX
+ gl_CONDITIONAL_HEADER([getopt.h])
+ gl_CONDITIONAL_HEADER([getopt-cdefs.h])
+ AC_PROG_MKDIR_P
+ gl_CONDITIONAL([GL_COND_OBJ_GETOPT], [test $REPLACE_GETOPT = 1])
+ AM_COND_IF([GL_COND_OBJ_GETOPT], [
+ dnl Define the substituted variable GNULIB_UNISTD_H_GETOPT to 1.
+ gl_UNISTD_H_REQUIRE_DEFAULTS
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_UNISTD_H_GETOPT], [1])
+ ])
+ gl_UNISTD_MODULE_INDICATOR([getopt-posix])
+ AC_SUBST([LIBINTL])
+ AC_SUBST([LTLIBINTL])
+ gt_TYPE_SSIZE_T
+ gl_STDDEF_H
+ gl_STDDEF_H_REQUIRE_DEFAULTS
+ gl_CONDITIONAL_HEADER([stddef.h])
+ AC_PROG_MKDIR_P
+ gl_SYS_TYPES_H
+ gl_SYS_TYPES_H_REQUIRE_DEFAULTS
+ AC_PROG_MKDIR_P
+ gl_UNISTD_H
+ gl_UNISTD_H_REQUIRE_DEFAULTS
+ AC_PROG_MKDIR_P
+ AC_C_VARARRAYS
+ # End of code from modules
+ m4_ifval(gl_LIBSOURCES_LIST, [
+ m4_syscmd([test ! -d ]m4_defn([gl_LIBSOURCES_DIR])[ ||
+ for gl_file in ]gl_LIBSOURCES_LIST[ ; do
+ if test ! -r ]m4_defn([gl_LIBSOURCES_DIR])[/$gl_file ; then
+ echo "missing file ]m4_defn([gl_LIBSOURCES_DIR])[/$gl_file" >&2
+ exit 1
+ fi
+ done])dnl
+ m4_if(m4_sysval, [0], [],
+ [AC_FATAL([expected source file, required through AC_LIBSOURCES, not found])])
+ ])
+ m4_popdef([GL_MODULE_INDICATOR_PREFIX])
+ m4_popdef([GL_MACRO_PREFIX])
+ m4_popdef([gl_LIBSOURCES_DIR])
+ m4_popdef([gl_LIBSOURCES_LIST])
+ m4_popdef([AC_LIBSOURCES])
+ m4_popdef([AC_REPLACE_FUNCS])
+ m4_popdef([AC_LIBOBJ])
+ AC_CONFIG_COMMANDS_PRE([
+ gl_libobjs=
+ gl_ltlibobjs=
+ gl_libobjdeps=
+ if test -n "$gl_LIBOBJS"; then
+ # Remove the extension.
+changequote(,)dnl
+ sed_drop_objext='s/\.o$//;s/\.obj$//'
+ sed_dirname1='s,//*,/,g'
+ sed_dirname2='s,\(.\)/$,\1,'
+ sed_dirname3='s,^[^/]*$,.,'
+ sed_dirname4='s,\(.\)/[^/]*$,\1,'
+ sed_basename1='s,.*/,,'
+changequote([, ])dnl
+ for i in `for i in $gl_LIBOBJS; do echo "$i"; done | sed -e "$sed_drop_objext" | sort | uniq`; do
+ gl_libobjs="$gl_libobjs $i.$ac_objext"
+ gl_ltlibobjs="$gl_ltlibobjs $i.lo"
+ i_dir=`echo "$i" | sed -e "$sed_dirname1" -e "$sed_dirname2" -e "$sed_dirname3" -e "$sed_dirname4"`
+ i_base=`echo "$i" | sed -e "$sed_basename1"`
+ gl_libobjdeps="$gl_libobjdeps $i_dir/\$(DEPDIR)/$i_base.Po"
+ done
+ fi
+ AC_SUBST([gl_LIBOBJS], [$gl_libobjs])
+ AC_SUBST([gl_LTLIBOBJS], [$gl_ltlibobjs])
+ AC_SUBST([gl_LIBOBJDEPS], [$gl_libobjdeps])
+ ])
+ gltests_libdeps=
+ gltests_ltlibdeps=
+ m4_pushdef([AC_LIBOBJ], m4_defn([gltests_LIBOBJ]))
+ m4_pushdef([AC_REPLACE_FUNCS], m4_defn([gltests_REPLACE_FUNCS]))
+ m4_pushdef([AC_LIBSOURCES], m4_defn([gltests_LIBSOURCES]))
+ m4_pushdef([gltests_LIBSOURCES_LIST], [])
+ m4_pushdef([gltests_LIBSOURCES_DIR], [])
+ m4_pushdef([GL_MACRO_PREFIX], [gltests])
+ m4_pushdef([GL_MODULE_INDICATOR_PREFIX], [GL])
+ gl_COMMON
+ gl_source_base='tests'
+ gl_source_base_prefix=
+changequote(,)dnl
+ gltests_WITNESS=IN_`echo "${PACKAGE-$PACKAGE_TARNAME}" | LC_ALL=C tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ | LC_ALL=C sed -e 's/[^A-Z0-9_]/_/g'`_GNULIB_TESTS
+changequote([, ])dnl
+ AC_SUBST([gltests_WITNESS])
+ gl_module_indicator_condition=$gltests_WITNESS
+ m4_pushdef([gl_MODULE_INDICATOR_CONDITION], [$gl_module_indicator_condition])
+ m4_popdef([gl_MODULE_INDICATOR_CONDITION])
+ m4_ifval(gltests_LIBSOURCES_LIST, [
+ m4_syscmd([test ! -d ]m4_defn([gltests_LIBSOURCES_DIR])[ ||
+ for gl_file in ]gltests_LIBSOURCES_LIST[ ; do
+ if test ! -r ]m4_defn([gltests_LIBSOURCES_DIR])[/$gl_file ; then
+ echo "missing file ]m4_defn([gltests_LIBSOURCES_DIR])[/$gl_file" >&2
+ exit 1
+ fi
+ done])dnl
+ m4_if(m4_sysval, [0], [],
+ [AC_FATAL([expected source file, required through AC_LIBSOURCES, not found])])
+ ])
+ m4_popdef([GL_MODULE_INDICATOR_PREFIX])
+ m4_popdef([GL_MACRO_PREFIX])
+ m4_popdef([gltests_LIBSOURCES_DIR])
+ m4_popdef([gltests_LIBSOURCES_LIST])
+ m4_popdef([AC_LIBSOURCES])
+ m4_popdef([AC_REPLACE_FUNCS])
+ m4_popdef([AC_LIBOBJ])
+ AC_CONFIG_COMMANDS_PRE([
+ gltests_libobjs=
+ gltests_ltlibobjs=
+ gltests_libobjdeps=
+ if test -n "$gltests_LIBOBJS"; then
+ # Remove the extension.
+changequote(,)dnl
+ sed_drop_objext='s/\.o$//;s/\.obj$//'
+ sed_dirname1='s,//*,/,g'
+ sed_dirname2='s,\(.\)/$,\1,'
+ sed_dirname3='s,^[^/]*$,.,'
+ sed_dirname4='s,\(.\)/[^/]*$,\1,'
+ sed_basename1='s,.*/,,'
+changequote([, ])dnl
+ for i in `for i in $gltests_LIBOBJS; do echo "$i"; done | sed -e "$sed_drop_objext" | sort | uniq`; do
+ gltests_libobjs="$gltests_libobjs $i.$ac_objext"
+ gltests_ltlibobjs="$gltests_ltlibobjs $i.lo"
+ i_dir=`echo "$i" | sed -e "$sed_dirname1" -e "$sed_dirname2" -e "$sed_dirname3" -e "$sed_dirname4"`
+ i_base=`echo "$i" | sed -e "$sed_basename1"`
+ gltests_libobjdeps="$gltests_libobjdeps $i_dir/\$(DEPDIR)/$i_base.Po"
+ done
+ fi
+ AC_SUBST([gltests_LIBOBJS], [$gltests_libobjs])
+ AC_SUBST([gltests_LTLIBOBJS], [$gltests_ltlibobjs])
+ AC_SUBST([gltests_LIBOBJDEPS], [$gltests_libobjdeps])
+ ])
+ AC_REQUIRE([gl_CC_GNULIB_WARNINGS])
+ LIBGNU_LIBDEPS="$gl_libdeps"
+ AC_SUBST([LIBGNU_LIBDEPS])
+ LIBGNU_LTLIBDEPS="$gl_ltlibdeps"
+ AC_SUBST([LIBGNU_LTLIBDEPS])
+])
+
+# Like AC_LIBOBJ, except that the module name goes
+# into gl_LIBOBJS instead of into LIBOBJS.
+AC_DEFUN([gl_LIBOBJ], [
+ AS_LITERAL_IF([$1], [gl_LIBSOURCES([$1.c])])dnl
+ gl_LIBOBJS="$gl_LIBOBJS $1.$ac_objext"
+])
+
+# Like AC_REPLACE_FUNCS, except that the module name goes
+# into gl_LIBOBJS instead of into LIBOBJS.
+AC_DEFUN([gl_REPLACE_FUNCS], [
+ m4_foreach_w([gl_NAME], [$1], [AC_LIBSOURCES(gl_NAME[.c])])dnl
+ AC_CHECK_FUNCS([$1], , [gl_LIBOBJ($ac_func)])
+])
+
+# Like AC_LIBSOURCES, except the directory where the source file is
+# expected is derived from the gnulib-tool parameterization,
+# and alloca is special cased (for the alloca-opt module).
+# We could also entirely rely on EXTRA_lib..._SOURCES.
+AC_DEFUN([gl_LIBSOURCES], [
+ m4_foreach([_gl_NAME], [$1], [
+ m4_if(_gl_NAME, [alloca.c], [], [
+ m4_define([gl_LIBSOURCES_DIR], [gnulib])
+ m4_append([gl_LIBSOURCES_LIST], _gl_NAME, [ ])
+ ])
+ ])
+])
+
+# Like AC_LIBOBJ, except that the module name goes
+# into gltests_LIBOBJS instead of into LIBOBJS.
+AC_DEFUN([gltests_LIBOBJ], [
+ AS_LITERAL_IF([$1], [gltests_LIBSOURCES([$1.c])])dnl
+ gltests_LIBOBJS="$gltests_LIBOBJS $1.$ac_objext"
+])
+
+# Like AC_REPLACE_FUNCS, except that the module name goes
+# into gltests_LIBOBJS instead of into LIBOBJS.
+AC_DEFUN([gltests_REPLACE_FUNCS], [
+ m4_foreach_w([gl_NAME], [$1], [AC_LIBSOURCES(gl_NAME[.c])])dnl
+ AC_CHECK_FUNCS([$1], , [gltests_LIBOBJ($ac_func)])
+])
+
+# Like AC_LIBSOURCES, except the directory where the source file is
+# expected is derived from the gnulib-tool parameterization,
+# and alloca is special cased (for the alloca-opt module).
+# We could also entirely rely on EXTRA_lib..._SOURCES.
+AC_DEFUN([gltests_LIBSOURCES], [
+ m4_foreach([_gl_NAME], [$1], [
+ m4_if(_gl_NAME, [alloca.c], [], [
+ m4_define([gltests_LIBSOURCES_DIR], [tests])
+ m4_append([gltests_LIBSOURCES_LIST], _gl_NAME, [ ])
+ ])
+ ])
+])
+
+# This macro records the list of files which have been installed by
+# gnulib-tool and may be removed by future gnulib-tool invocations.
+AC_DEFUN([gl_FILE_LIST], [
+ lib/arg-nonnull.h
+ lib/c++defs.h
+ lib/getopt-cdefs.in.h
+ lib/getopt-core.h
+ lib/getopt-ext.h
+ lib/getopt-pfx-core.h
+ lib/getopt-pfx-ext.h
+ lib/getopt.c
+ lib/getopt.in.h
+ lib/getopt1.c
+ lib/getopt_int.h
+ lib/gettext.h
+ lib/stddef.in.h
+ lib/sys_types.in.h
+ lib/unistd.c
+ lib/unistd.in.h
+ lib/warn-on-use.h
+ m4/00gnulib.m4
+ m4/absolute-header.m4
+ m4/extensions.m4
+ m4/extern-inline.m4
+ m4/getopt.m4
+ m4/gnulib-common.m4
+ m4/include_next.m4
+ m4/nocrash.m4
+ m4/off_t.m4
+ m4/pid_t.m4
+ m4/ssize_t.m4
+ m4/stddef_h.m4
+ m4/sys_types_h.m4
+ m4/unistd_h.m4
+ m4/vararrays.m4
+ m4/warn-on-use.m4
+ m4/wchar_t.m4
+ m4/zzgnulib.m4
+])
diff --git a/m4/gnulib/gnulib-tool.m4 b/m4/gnulib/gnulib-tool.m4
new file mode 100644
index 0000000..a9dd569
--- /dev/null
+++ b/m4/gnulib/gnulib-tool.m4
@@ -0,0 +1,63 @@
+# gnulib-tool.m4 serial 4
+dnl Copyright (C) 2004-2005, 2009-2023 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl The following macros need not be invoked explicitly.
+dnl Invoking them does nothing except to declare default arguments
+dnl for "gnulib-tool --import".
+
+dnl Usage: gl_LOCAL_DIR([DIR])
+AC_DEFUN([gl_LOCAL_DIR], [])
+
+dnl Usage: gl_MODULES([module1 module2 ...])
+AC_DEFUN([gl_MODULES], [])
+
+dnl Usage: gl_AVOID([module1 module2 ...])
+AC_DEFUN([gl_AVOID], [])
+
+dnl Usage: gl_SOURCE_BASE([DIR])
+AC_DEFUN([gl_SOURCE_BASE], [])
+
+dnl Usage: gl_M4_BASE([DIR])
+AC_DEFUN([gl_M4_BASE], [])
+
+dnl Usage: gl_PO_BASE([DIR])
+AC_DEFUN([gl_PO_BASE], [])
+
+dnl Usage: gl_DOC_BASE([DIR])
+AC_DEFUN([gl_DOC_BASE], [])
+
+dnl Usage: gl_TESTS_BASE([DIR])
+AC_DEFUN([gl_TESTS_BASE], [])
+
+dnl Usage: gl_WITH_TESTS
+AC_DEFUN([gl_WITH_TESTS], [])
+
+dnl Usage: gl_LIB([LIBNAME])
+AC_DEFUN([gl_LIB], [])
+
+dnl Usage: gl_LGPL or gl_LGPL([VERSION])
+AC_DEFUN([gl_LGPL], [])
+
+dnl Usage: gl_MAKEFILE_NAME([FILENAME])
+AC_DEFUN([gl_MAKEFILE_NAME], [])
+
+dnl Usage: gl_TESTS_MAKEFILE_NAME([FILENAME])
+AC_DEFUN([gl_TESTS_MAKEFILE_NAME], [])
+
+dnl Usage: gl_AUTOMAKE_SUBDIR
+AC_DEFUN([gl_AUTOMAKE_SUBDIR], [])
+
+dnl Usage: gl_LIBTOOL
+AC_DEFUN([gl_LIBTOOL], [])
+
+dnl Usage: gl_MACRO_PREFIX([PREFIX])
+AC_DEFUN([gl_MACRO_PREFIX], [])
+
+dnl Usage: gl_PO_DOMAIN([DOMAIN])
+AC_DEFUN([gl_PO_DOMAIN], [])
+
+dnl Usage: gl_VC_FILES([BOOLEAN])
+AC_DEFUN([gl_VC_FILES], [])
diff --git a/m4/gnulib/include_next.m4 b/m4/gnulib/include_next.m4
new file mode 100644
index 0000000..9f19215
--- /dev/null
+++ b/m4/gnulib/include_next.m4
@@ -0,0 +1,224 @@
+# include_next.m4 serial 26
+dnl Copyright (C) 2006-2023 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Paul Eggert and Derek Price.
+
+dnl Sets INCLUDE_NEXT, INCLUDE_NEXT_AS_FIRST_DIRECTIVE, PRAGMA_SYSTEM_HEADER,
+dnl and PRAGMA_COLUMNS.
+dnl
+dnl INCLUDE_NEXT expands to 'include_next' if the compiler supports it, or to
+dnl 'include' otherwise.
+dnl
+dnl INCLUDE_NEXT_AS_FIRST_DIRECTIVE expands to 'include_next' if the compiler
+dnl supports it in the special case that it is the first include directive in
+dnl the given file, or to 'include' otherwise.
+dnl
+dnl PRAGMA_SYSTEM_HEADER can be used in files that contain #include_next,
+dnl so as to avoid GCC warnings when the gcc option -pedantic is used.
+dnl '#pragma GCC system_header' has the same effect as if the file was found
+dnl through the include search path specified with '-isystem' options (as
+dnl opposed to the search path specified with '-I' options). Namely, gcc
+dnl does not warn about some things, and on some systems (Solaris and Interix)
+dnl __STDC__ evaluates to 0 instead of to 1. The latter is an undesired side
+dnl effect; we are therefore careful to use 'defined __STDC__' or '1' instead
+dnl of plain '__STDC__'.
+dnl
+dnl PRAGMA_COLUMNS can be used in files that override system header files, so
+dnl as to avoid compilation errors on HP NonStop systems when the gnulib file
+dnl is included by a system header file that does a "#pragma COLUMNS 80" (which
+dnl has the effect of truncating the lines of that file and all files that it
+dnl includes to 80 columns) and the gnulib file has lines longer than 80
+dnl columns.
+
+AC_DEFUN([gl_INCLUDE_NEXT],
+[
+ AC_LANG_PREPROC_REQUIRE()
+ AC_CACHE_CHECK([whether the preprocessor supports include_next],
+ [gl_cv_have_include_next],
+ [rm -rf conftestd1a conftestd1b conftestd2
+ mkdir conftestd1a conftestd1b conftestd2
+ dnl IBM C 9.0, 10.1 (original versions, prior to the 2009-01 updates) on
+ dnl AIX 6.1 support include_next when used as first preprocessor directive
+ dnl in a file, but not when preceded by another include directive. Check
+ dnl for this bug by including .
+ dnl Additionally, with this same compiler, include_next is a no-op when
+ dnl used in a header file that was included by specifying its absolute
+ dnl file name. Despite these two bugs, include_next is used in the
+ dnl compiler's . By virtue of the second bug, we need to use
+ dnl include_next as well in this case.
+ cat < conftestd1a/conftest.h
+#define DEFINED_IN_CONFTESTD1
+#include_next
+#ifdef DEFINED_IN_CONFTESTD2
+int foo;
+#else
+#error "include_next doesn't work"
+#endif
+EOF
+ cat < conftestd1b/conftest.h
+#define DEFINED_IN_CONFTESTD1
+#include
+#include_next
+#ifdef DEFINED_IN_CONFTESTD2
+int foo;
+#else
+#error "include_next doesn't work"
+#endif
+EOF
+ cat < conftestd2/conftest.h
+#ifndef DEFINED_IN_CONFTESTD1
+#error "include_next test doesn't work"
+#endif
+#define DEFINED_IN_CONFTESTD2
+EOF
+ gl_save_CPPFLAGS="$CPPFLAGS"
+ CPPFLAGS="$gl_save_CPPFLAGS -Iconftestd1b -Iconftestd2"
+dnl We intentionally avoid using AC_LANG_SOURCE here.
+ AC_COMPILE_IFELSE([AC_LANG_DEFINES_PROVIDED[#include ]],
+ [gl_cv_have_include_next=yes],
+ [CPPFLAGS="$gl_save_CPPFLAGS -Iconftestd1a -Iconftestd2"
+ AC_COMPILE_IFELSE([AC_LANG_DEFINES_PROVIDED[#include ]],
+ [gl_cv_have_include_next=buggy],
+ [gl_cv_have_include_next=no])
+ ])
+ CPPFLAGS="$gl_save_CPPFLAGS"
+ rm -rf conftestd1a conftestd1b conftestd2
+ ])
+ PRAGMA_SYSTEM_HEADER=
+ if test $gl_cv_have_include_next = yes; then
+ INCLUDE_NEXT=include_next
+ INCLUDE_NEXT_AS_FIRST_DIRECTIVE=include_next
+ if test -n "$GCC"; then
+ PRAGMA_SYSTEM_HEADER='#pragma GCC system_header'
+ fi
+ else
+ if test $gl_cv_have_include_next = buggy; then
+ INCLUDE_NEXT=include
+ INCLUDE_NEXT_AS_FIRST_DIRECTIVE=include_next
+ else
+ INCLUDE_NEXT=include
+ INCLUDE_NEXT_AS_FIRST_DIRECTIVE=include
+ fi
+ fi
+ AC_SUBST([INCLUDE_NEXT])
+ AC_SUBST([INCLUDE_NEXT_AS_FIRST_DIRECTIVE])
+ AC_SUBST([PRAGMA_SYSTEM_HEADER])
+
+ dnl HP NonStop systems, which define __TANDEM, limit the line length
+ dnl after including some system header files.
+ AC_CACHE_CHECK([whether source code line length is unlimited],
+ [gl_cv_source_line_length_unlimited],
+ [AC_EGREP_CPP([choke me],
+ [
+#ifdef __TANDEM
+choke me
+#endif
+ ],
+ [gl_cv_source_line_length_unlimited=no],
+ [gl_cv_source_line_length_unlimited=yes])
+ ])
+ if test $gl_cv_source_line_length_unlimited = no; then
+ PRAGMA_COLUMNS="#pragma COLUMNS 10000"
+ else
+ PRAGMA_COLUMNS=
+ fi
+ AC_SUBST([PRAGMA_COLUMNS])
+])
+
+# gl_CHECK_NEXT_HEADERS(HEADER1 HEADER2 ...)
+# ------------------------------------------
+# For each arg foo.h, if #include_next works, define NEXT_FOO_H to be
+# ''; otherwise define it to be
+# '"///usr/include/foo.h"', or whatever other absolute file name is suitable.
+# Also, if #include_next works as first preprocessing directive in a file,
+# define NEXT_AS_FIRST_DIRECTIVE_FOO_H to be ''; otherwise define it to
+# be
+# '"///usr/include/foo.h"', or whatever other absolute file name is suitable.
+# That way, a header file with the following line:
+# #@INCLUDE_NEXT@ @NEXT_FOO_H@
+# or
+# #@INCLUDE_NEXT_AS_FIRST_DIRECTIVE@ @NEXT_AS_FIRST_DIRECTIVE_FOO_H@
+# behaves (after sed substitution) as if it contained
+# #include_next
+# even if the compiler does not support include_next.
+# The three "///" are to pacify Sun C 5.8, which otherwise would say
+# "warning: #include of /usr/include/... may be non-portable".
+# Use '""', not '<>', so that the /// cannot be confused with a C99 comment.
+# Note: This macro assumes that the header file is not empty after
+# preprocessing, i.e. it does not only define preprocessor macros but also
+# provides some type/enum definitions or function/variable declarations.
+#
+# This macro also checks whether each header exists, by invoking
+# AC_CHECK_HEADERS_ONCE or AC_CHECK_HEADERS on each argument.
+AC_DEFUN([gl_CHECK_NEXT_HEADERS],
+[
+ gl_NEXT_HEADERS_INTERNAL([$1], [check])
+])
+
+# gl_NEXT_HEADERS(HEADER1 HEADER2 ...)
+# ------------------------------------
+# Like gl_CHECK_NEXT_HEADERS, except do not check whether the headers exist.
+# This is suitable for headers like that are standardized by C89
+# and therefore can be assumed to exist.
+AC_DEFUN([gl_NEXT_HEADERS],
+[
+ gl_NEXT_HEADERS_INTERNAL([$1], [assume])
+])
+
+# The guts of gl_CHECK_NEXT_HEADERS and gl_NEXT_HEADERS.
+AC_DEFUN([gl_NEXT_HEADERS_INTERNAL],
+[
+ AC_REQUIRE([gl_INCLUDE_NEXT])
+ AC_REQUIRE([AC_CANONICAL_HOST])
+
+ m4_if([$2], [check],
+ [AC_CHECK_HEADERS_ONCE([$1])
+ ])
+
+ m4_foreach_w([gl_HEADER_NAME], [$1],
+ [AS_VAR_PUSHDEF([gl_next_header],
+ [gl_cv_next_]m4_defn([gl_HEADER_NAME]))
+ if test $gl_cv_have_include_next = yes; then
+ AS_VAR_SET([gl_next_header], ['<'gl_HEADER_NAME'>'])
+ else
+ AC_CACHE_CHECK(
+ [absolute name of <]m4_defn([gl_HEADER_NAME])[>],
+ [gl_next_header],
+ [m4_if([$2], [check],
+ [AS_VAR_PUSHDEF([gl_header_exists],
+ [ac_cv_header_]m4_defn([gl_HEADER_NAME]))
+ if test AS_VAR_GET([gl_header_exists]) = yes; then
+ AS_VAR_POPDEF([gl_header_exists])
+ ])
+ gl_ABSOLUTE_HEADER_ONE(gl_HEADER_NAME)
+ AS_VAR_COPY([gl_header], [gl_cv_absolute_]AS_TR_SH(gl_HEADER_NAME))
+ AS_VAR_SET([gl_next_header], ['"'$gl_header'"'])
+ m4_if([$2], [check],
+ [else
+ AS_VAR_SET([gl_next_header], ['<'gl_HEADER_NAME'>'])
+ fi
+ ])
+ ])
+ fi
+ AC_SUBST(
+ AS_TR_CPP([NEXT_]m4_defn([gl_HEADER_NAME])),
+ [AS_VAR_GET([gl_next_header])])
+ if test $gl_cv_have_include_next = yes || test $gl_cv_have_include_next = buggy; then
+ # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include_next'
+ gl_next_as_first_directive='<'gl_HEADER_NAME'>'
+ else
+ # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include'
+ gl_next_as_first_directive=AS_VAR_GET([gl_next_header])
+ fi
+ AC_SUBST(
+ AS_TR_CPP([NEXT_AS_FIRST_DIRECTIVE_]m4_defn([gl_HEADER_NAME])),
+ [$gl_next_as_first_directive])
+ AS_VAR_POPDEF([gl_next_header])])
+])
+
+# Autoconf 2.68 added warnings for our use of AC_COMPILE_IFELSE;
+# this fallback is safe for all earlier autoconf versions.
+m4_define_default([AC_LANG_DEFINES_PROVIDED])
diff --git a/m4/gnulib/nocrash.m4 b/m4/gnulib/nocrash.m4
new file mode 100644
index 0000000..6a76638
--- /dev/null
+++ b/m4/gnulib/nocrash.m4
@@ -0,0 +1,131 @@
+# nocrash.m4 serial 5
+dnl Copyright (C) 2005, 2009-2023 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl Based on libsigsegv, from Bruno Haible and Paolo Bonzini.
+
+AC_PREREQ([2.13])
+
+dnl Expands to some code for use in .c programs that will cause the configure
+dnl test to exit instead of crashing. This is useful to avoid triggering
+dnl action from a background debugger and to avoid core dumps.
+dnl Usage: ...
+dnl ]GL_NOCRASH[
+dnl ...
+dnl int main() { nocrash_init(); ... }
+AC_DEFUN([GL_NOCRASH],[[
+#include
+#if defined __MACH__ && defined __APPLE__
+/* Avoid a crash on Mac OS X. */
+#include
+#include
+#include
+#include
+#include
+#include
+/* The exception port on which our thread listens. */
+static mach_port_t our_exception_port;
+/* The main function of the thread listening for exceptions of type
+ EXC_BAD_ACCESS. */
+static void *
+mach_exception_thread (void *arg)
+{
+ /* Buffer for a message to be received. */
+ struct {
+ mach_msg_header_t head;
+ mach_msg_body_t msgh_body;
+ char data[1024];
+ } msg;
+ mach_msg_return_t retval;
+ /* Wait for a message on the exception port. */
+ retval = mach_msg (&msg.head, MACH_RCV_MSG | MACH_RCV_LARGE, 0, sizeof (msg),
+ our_exception_port, MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL);
+ if (retval != MACH_MSG_SUCCESS)
+ abort ();
+ exit (1);
+}
+static void
+nocrash_init (void)
+{
+ mach_port_t self = mach_task_self ();
+ /* Allocate a port on which the thread shall listen for exceptions. */
+ if (mach_port_allocate (self, MACH_PORT_RIGHT_RECEIVE, &our_exception_port)
+ == KERN_SUCCESS) {
+ /* See https://web.mit.edu/darwin/src/modules/xnu/osfmk/man/mach_port_insert_right.html. */
+ if (mach_port_insert_right (self, our_exception_port, our_exception_port,
+ MACH_MSG_TYPE_MAKE_SEND)
+ == KERN_SUCCESS) {
+ /* The exceptions we want to catch. Only EXC_BAD_ACCESS is interesting
+ for us. */
+ exception_mask_t mask = EXC_MASK_BAD_ACCESS;
+ /* Create the thread listening on the exception port. */
+ pthread_attr_t attr;
+ pthread_t thread;
+ if (pthread_attr_init (&attr) == 0
+ && pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED) == 0
+ && pthread_create (&thread, &attr, mach_exception_thread, NULL) == 0) {
+ pthread_attr_destroy (&attr);
+ /* Replace the exception port info for these exceptions with our own.
+ Note that we replace the exception port for the entire task, not only
+ for a particular thread. This has the effect that when our exception
+ port gets the message, the thread specific exception port has already
+ been asked, and we don't need to bother about it.
+ See https://web.mit.edu/darwin/src/modules/xnu/osfmk/man/task_set_exception_ports.html. */
+ task_set_exception_ports (self, mask, our_exception_port,
+ EXCEPTION_DEFAULT, MACHINE_THREAD_STATE);
+ }
+ }
+ }
+}
+#elif defined _WIN32 && ! defined __CYGWIN__
+/* Avoid a crash on native Windows. */
+#define WIN32_LEAN_AND_MEAN
+#include
+#include
+static LONG WINAPI
+exception_filter (EXCEPTION_POINTERS *ExceptionInfo)
+{
+ switch (ExceptionInfo->ExceptionRecord->ExceptionCode)
+ {
+ case EXCEPTION_ACCESS_VIOLATION:
+ case EXCEPTION_IN_PAGE_ERROR:
+ case EXCEPTION_STACK_OVERFLOW:
+ case EXCEPTION_GUARD_PAGE:
+ case EXCEPTION_PRIV_INSTRUCTION:
+ case EXCEPTION_ILLEGAL_INSTRUCTION:
+ case EXCEPTION_DATATYPE_MISALIGNMENT:
+ case EXCEPTION_ARRAY_BOUNDS_EXCEEDED:
+ case EXCEPTION_NONCONTINUABLE_EXCEPTION:
+ exit (1);
+ }
+ return EXCEPTION_CONTINUE_SEARCH;
+}
+static void
+nocrash_init (void)
+{
+ SetUnhandledExceptionFilter ((LPTOP_LEVEL_EXCEPTION_FILTER) exception_filter);
+}
+#else
+/* Avoid a crash on POSIX systems. */
+#include
+#include
+/* A POSIX signal handler. */
+static void
+exception_handler (int sig)
+{
+ _exit (1);
+}
+static void
+nocrash_init (void)
+{
+#ifdef SIGSEGV
+ signal (SIGSEGV, exception_handler);
+#endif
+#ifdef SIGBUS
+ signal (SIGBUS, exception_handler);
+#endif
+}
+#endif
+]])
diff --git a/m4/gnulib/off_t.m4 b/m4/gnulib/off_t.m4
new file mode 100644
index 0000000..880f347
--- /dev/null
+++ b/m4/gnulib/off_t.m4
@@ -0,0 +1,18 @@
+# off_t.m4 serial 1
+dnl Copyright (C) 2012-2023 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl Check whether to override the 'off_t' type.
+dnl Set WINDOWS_64_BIT_OFF_T.
+
+AC_DEFUN([gl_TYPE_OFF_T],
+[
+ m4_ifdef([gl_LARGEFILE], [
+ AC_REQUIRE([gl_LARGEFILE])
+ ], [
+ WINDOWS_64_BIT_OFF_T=0
+ ])
+ AC_SUBST([WINDOWS_64_BIT_OFF_T])
+])
diff --git a/m4/gnulib/pid_t.m4 b/m4/gnulib/pid_t.m4
new file mode 100644
index 0000000..0fd7d0a
--- /dev/null
+++ b/m4/gnulib/pid_t.m4
@@ -0,0 +1,38 @@
+# pid_t.m4 serial 4
+dnl Copyright (C) 2020-2023 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+# The following implementation works around a problem in autoconf <= 2.69.
+m4_version_prereq([2.70], [], [
+
+dnl Define pid_t if the headers don't define it.
+AC_DEFUN([AC_TYPE_PID_T],
+[
+ AC_CHECK_TYPE([pid_t],
+ [],
+ [dnl On 64-bit native Windows, define it to the equivalent of 'intptr_t'
+ dnl (= 'long long' = '__int64'), because that is the return type
+ dnl of the _spawnv* functions
+ dnl
+ dnl and the argument type of the _cwait function
+ dnl .
+ dnl Otherwise (on 32-bit Windows and on old Unix platforms), define it
+ dnl to 'int'.
+ AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM([[
+ #if defined _WIN64 && !defined __CYGWIN__
+ LLP64
+ #endif
+ ]])
+ ],
+ [gl_pid_type='int'],
+ [gl_pid_type='__int64'])
+ AC_DEFINE_UNQUOTED([pid_t], [$gl_pid_type],
+ [Define as a signed integer type capable of holding a process identifier.])
+ ],
+ [AC_INCLUDES_DEFAULT])
+])
+
+])# m4_version_prereq 2.70
diff --git a/m4/gnulib/ssize_t.m4 b/m4/gnulib/ssize_t.m4
new file mode 100644
index 0000000..1c12c33
--- /dev/null
+++ b/m4/gnulib/ssize_t.m4
@@ -0,0 +1,23 @@
+# ssize_t.m4 serial 5 (gettext-0.18.2)
+dnl Copyright (C) 2001-2003, 2006, 2010-2023 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Bruno Haible.
+dnl Test whether ssize_t is defined.
+
+AC_DEFUN([gt_TYPE_SSIZE_T],
+[
+ AC_CACHE_CHECK([for ssize_t], [gt_cv_ssize_t],
+ [AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[#include ]],
+ [[int x = sizeof (ssize_t *) + sizeof (ssize_t);
+ return !x;]])],
+ [gt_cv_ssize_t=yes], [gt_cv_ssize_t=no])])
+ if test $gt_cv_ssize_t = no; then
+ AC_DEFINE([ssize_t], [int],
+ [Define as a signed type of the same size as size_t.])
+ fi
+])
diff --git a/m4/gnulib/stddef_h.m4 b/m4/gnulib/stddef_h.m4
new file mode 100644
index 0000000..aa01221
--- /dev/null
+++ b/m4/gnulib/stddef_h.m4
@@ -0,0 +1,119 @@
+# stddef_h.m4 serial 14
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl A placeholder for , for platforms that have issues.
+
+AC_DEFUN_ONCE([gl_STDDEF_H],
+[
+ AC_REQUIRE([gl_STDDEF_H_DEFAULTS])
+ AC_REQUIRE([gt_TYPE_WCHAR_T])
+
+ dnl Persuade OpenBSD to declare max_align_t.
+ AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+
+ GL_GENERATE_STDDEF_H=false
+
+ dnl Test whether the type max_align_t exists and whether its alignment
+ dnl "is as great as is supported by the implementation in all contexts".
+ AC_CACHE_CHECK([for good max_align_t],
+ [gl_cv_type_max_align_t],
+ [AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[/* On FreeBSD 12.0/x86, max_align_t defined by has
+ the correct alignment with the default (wrong) definition of
+ _Alignof, but a wrong alignment as soon as we activate an
+ ISO C compliant _Alignof definition. */
+ #if ((defined __GNUC__ && 4 <= __GNUC__) || defined __clang__) && !defined __cplusplus
+ #define _Alignof(type) __builtin_offsetof (struct { char __a; type __b; }, __b)
+ #endif
+ #include
+ unsigned int s = sizeof (max_align_t);
+ #if defined __GNUC__ || defined __clang__ || defined __IBM__ALIGNOF__
+ int check1[2 * (__alignof__ (double) <= __alignof__ (max_align_t)) - 1];
+ int check2[2 * (__alignof__ (long double) <= __alignof__ (max_align_t)) - 1];
+ #endif
+ typedef struct { char a; max_align_t b; } max_helper;
+ typedef struct { char a; long b; } long_helper;
+ typedef struct { char a; double b; } double_helper;
+ typedef struct { char a; long double b; } long_double_helper;
+ int check3[2 * (offsetof (long_helper, b) <= offsetof (max_helper, b)) - 1];
+ int check4[2 * (offsetof (double_helper, b) <= offsetof (max_helper, b)) - 1];
+ int check5[2 * (offsetof (long_double_helper, b) <= offsetof (max_helper, b)) - 1];
+ ]])],
+ [gl_cv_type_max_align_t=yes],
+ [gl_cv_type_max_align_t=no])
+ ])
+ if test $gl_cv_type_max_align_t = no; then
+ HAVE_MAX_ALIGN_T=0
+ GL_GENERATE_STDDEF_H=true
+ fi
+
+ if test $gt_cv_c_wchar_t = no; then
+ HAVE_WCHAR_T=0
+ GL_GENERATE_STDDEF_H=true
+ fi
+
+ AC_CACHE_CHECK([whether NULL can be used in arbitrary expressions],
+ [gl_cv_decl_null_works],
+ [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include
+ int test[2 * (sizeof NULL == sizeof (void *)) -1];
+]])],
+ [gl_cv_decl_null_works=yes],
+ [gl_cv_decl_null_works=no])])
+ if test $gl_cv_decl_null_works = no; then
+ REPLACE_NULL=1
+ GL_GENERATE_STDDEF_H=true
+ fi
+
+ AC_CACHE_CHECK([for unreachable],
+ [gl_cv_func_unreachable],
+ [AC_LINK_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[#include
+ ]],
+ [[unreachable ();
+ ]])],
+ [gl_cv_func_unreachable=yes],
+ [gl_cv_func_unreachable=no])
+ ])
+ if test $gl_cv_func_unreachable = no; then
+ GL_GENERATE_STDDEF_H=true
+ fi
+
+ if $GL_GENERATE_STDDEF_H; then
+ gl_NEXT_HEADERS([stddef.h])
+ fi
+])
+
+# gl_STDDEF_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
+AC_DEFUN([gl_STDDEF_MODULE_INDICATOR],
+[
+ dnl Ensure to expand the default settings once only.
+ gl_STDDEF_H_REQUIRE_DEFAULTS
+ gl_MODULE_INDICATOR_SET_VARIABLE([$1])
+])
+
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd. It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
+AC_DEFUN([gl_STDDEF_H_REQUIRE_DEFAULTS],
+[
+ m4_defun(GL_MODULE_INDICATOR_PREFIX[_STDDEF_H_MODULE_INDICATOR_DEFAULTS], [
+ ])
+ m4_require(GL_MODULE_INDICATOR_PREFIX[_STDDEF_H_MODULE_INDICATOR_DEFAULTS])
+ AC_REQUIRE([gl_STDDEF_H_DEFAULTS])
+])
+
+AC_DEFUN([gl_STDDEF_H_DEFAULTS],
+[
+ dnl Assume proper GNU behavior unless another module says otherwise.
+ REPLACE_NULL=0; AC_SUBST([REPLACE_NULL])
+ HAVE_MAX_ALIGN_T=1; AC_SUBST([HAVE_MAX_ALIGN_T])
+ HAVE_WCHAR_T=1; AC_SUBST([HAVE_WCHAR_T])
+])
diff --git a/m4/gnulib/sys_types_h.m4 b/m4/gnulib/sys_types_h.m4
new file mode 100644
index 0000000..627671f
--- /dev/null
+++ b/m4/gnulib/sys_types_h.m4
@@ -0,0 +1,70 @@
+# sys_types_h.m4 serial 13
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN_ONCE([gl_SYS_TYPES_H],
+[
+ AC_REQUIRE([gl_SYS_TYPES_H_DEFAULTS])
+
+ dnl Use sane struct stat types in OpenVMS 8.2 and later.
+ AC_DEFINE([_USE_STD_STAT], 1, [For standard stat data types on VMS.])
+
+ gl_NEXT_HEADERS([sys/types.h])
+
+ dnl Ensure the type pid_t gets defined.
+ AC_REQUIRE([AC_TYPE_PID_T])
+
+ dnl Ensure the type mode_t gets defined.
+ AC_REQUIRE([AC_TYPE_MODE_T])
+
+ dnl Whether to override the 'off_t' type.
+ AC_REQUIRE([gl_TYPE_OFF_T])
+
+ dnl Whether to override the 'dev_t' and 'ino_t' types.
+ m4_ifdef([gl_WINDOWS_STAT_INODES], [
+ AC_REQUIRE([gl_WINDOWS_STAT_INODES])
+ ], [
+ WINDOWS_STAT_INODES=0
+ ])
+ AC_SUBST([WINDOWS_STAT_INODES])
+])
+
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd. It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
+AC_DEFUN([gl_SYS_TYPES_H_REQUIRE_DEFAULTS],
+[
+ m4_defun(GL_MODULE_INDICATOR_PREFIX[_SYS_TYPE_H_MODULE_INDICATOR_DEFAULTS], [
+ ])
+ m4_require(GL_MODULE_INDICATOR_PREFIX[_SYS_TYPE_H_MODULE_INDICATOR_DEFAULTS])
+ AC_REQUIRE([gl_SYS_TYPES_H_DEFAULTS])
+])
+
+AC_DEFUN([gl_SYS_TYPES_H_DEFAULTS],
+[
+])
+
+# This works around a buggy version in autoconf <= 2.69.
+# See
+# The 2.70 version isn't quoted properly, so override it too.
+
+m4_version_prereq([2.70.1], [], [
+
+m4_undefine([AC_HEADER_MAJOR])
+AC_DEFUN([AC_HEADER_MAJOR],
+[AC_CHECK_HEADERS_ONCE([sys/types.h])
+AC_CHECK_HEADER([sys/mkdev.h],
+ [AC_DEFINE([MAJOR_IN_MKDEV], [1],
+ [Define to 1 if `major', `minor', and `makedev' are
+ declared in .])])
+if test $ac_cv_header_sys_mkdev_h = no; then
+ AC_CHECK_HEADER([sys/sysmacros.h],
+ [AC_DEFINE([MAJOR_IN_SYSMACROS], [1],
+ [Define to 1 if `major', `minor', and `makedev'
+ are declared in .])])
+fi
+])# AC_HEADER_MAJOR
+
+])
diff --git a/m4/gnulib/unistd_h.m4 b/m4/gnulib/unistd_h.m4
new file mode 100644
index 0000000..1c96158
--- /dev/null
+++ b/m4/gnulib/unistd_h.m4
@@ -0,0 +1,275 @@
+# unistd_h.m4 serial 94
+dnl Copyright (C) 2006-2023 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl Written by Simon Josefsson, Bruno Haible.
+
+AC_DEFUN_ONCE([gl_UNISTD_H],
+[
+ dnl Ensure to expand the default settings once only, before all statements
+ dnl that occur in other macros.
+ AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
+
+ gl_CHECK_NEXT_HEADERS([unistd.h])
+ if test $ac_cv_header_unistd_h = yes; then
+ HAVE_UNISTD_H=1
+ else
+ HAVE_UNISTD_H=0
+ fi
+ AC_SUBST([HAVE_UNISTD_H])
+
+ dnl Ensure the type pid_t gets defined.
+ AC_REQUIRE([AC_TYPE_PID_T])
+
+ dnl Determine WINDOWS_64_BIT_OFF_T.
+ AC_REQUIRE([gl_TYPE_OFF_T])
+
+ dnl Check for declarations of anything we want to poison if the
+ dnl corresponding gnulib module is not in use.
+ gl_WARN_ON_USE_PREPARE([[
+#if HAVE_UNISTD_H
+# include
+#endif
+/* Some systems declare various items in the wrong headers. */
+#if !(defined __GLIBC__ && !defined __UCLIBC__)
+# include
+# include
+# include
+# if defined _WIN32 && ! defined __CYGWIN__
+# include
+# endif
+#endif
+ ]], [access chdir chown copy_file_range dup dup2 dup3 environ euidaccess
+ execl execle execlp execv execve execvp execvpe
+ faccessat fchdir
+ fchownat fdatasync fsync ftruncate getcwd getdomainname getdtablesize
+ getentropy getgroups gethostname getlogin getlogin_r getpagesize getpass
+ getusershell setusershell endusershell
+ group_member isatty lchown link linkat lseek pipe pipe2 pread pwrite
+ readlink readlinkat rmdir sethostname sleep symlink symlinkat
+ truncate ttyname_r unlink unlinkat usleep])
+
+ AC_REQUIRE([AC_C_RESTRICT])
+
+ AC_CHECK_DECLS_ONCE([execvpe])
+ if test $ac_cv_have_decl_execvpe = no; then
+ HAVE_DECL_EXECVPE=0
+ fi
+])
+
+# gl_UNISTD_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
+AC_DEFUN([gl_UNISTD_MODULE_INDICATOR],
+[
+ dnl Ensure to expand the default settings once only.
+ gl_UNISTD_H_REQUIRE_DEFAULTS
+ gl_MODULE_INDICATOR_SET_VARIABLE([$1])
+ dnl Define it also as a C macro, for the benefit of the unit tests.
+ gl_MODULE_INDICATOR_FOR_TESTS([$1])
+])
+
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd. It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
+AC_DEFUN([gl_UNISTD_H_REQUIRE_DEFAULTS],
+[
+ m4_defun(GL_MODULE_INDICATOR_PREFIX[_UNISTD_H_MODULE_INDICATOR_DEFAULTS], [
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ACCESS])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_CHDIR])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_CHOWN])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_CLOSE])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_COPY_FILE_RANGE])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_DUP])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_DUP2])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_DUP3])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ENVIRON])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_EUIDACCESS])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_EXECL])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_EXECLE])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_EXECLP])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_EXECV])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_EXECVE])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_EXECVP])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_EXECVPE])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FACCESSAT])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FCHDIR])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FCHOWNAT])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FDATASYNC])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FSYNC])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FTRUNCATE])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETCWD])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETDOMAINNAME])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETDTABLESIZE])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETENTROPY])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETGROUPS])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETHOSTNAME])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETLOGIN])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETLOGIN_R])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETOPT_POSIX])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETPAGESIZE])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETPASS])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETPASS_GNU])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETUSERSHELL])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GROUP_MEMBER])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ISATTY])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LCHOWN])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LINK])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LINKAT])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LSEEK])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PIPE])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PIPE2])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PREAD])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PWRITE])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_READ])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_READLINK])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_READLINKAT])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_RMDIR])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SETHOSTNAME])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SLEEP])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SYMLINK])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SYMLINKAT])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_TRUNCATE])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_TTYNAME_R])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_UNISTD_H_GETOPT])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_UNISTD_H_NONBLOCKING])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_UNISTD_H_SIGPIPE])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_UNLINK])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_UNLINKAT])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_USLEEP])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WRITE])
+ dnl Support Microsoft deprecated alias function names by default.
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_ACCESS], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_CHDIR], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_CLOSE], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_DUP], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_DUP2], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_EXECL], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_EXECLE], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_EXECLP], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_EXECV], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_EXECVE], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_EXECVP], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_EXECVPE], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_GETCWD], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_GETPID], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_ISATTY], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_LSEEK], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_READ], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_RMDIR], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_SWAB], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_UNLINK], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_WRITE], [1])
+ ])
+ m4_require(GL_MODULE_INDICATOR_PREFIX[_UNISTD_H_MODULE_INDICATOR_DEFAULTS])
+ AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
+])
+
+AC_DEFUN([gl_UNISTD_H_DEFAULTS],
+[
+ dnl Assume proper GNU behavior unless another module says otherwise.
+ HAVE_CHOWN=1; AC_SUBST([HAVE_CHOWN])
+ HAVE_COPY_FILE_RANGE=1; AC_SUBST([HAVE_COPY_FILE_RANGE])
+ HAVE_DUP3=1; AC_SUBST([HAVE_DUP3])
+ HAVE_EUIDACCESS=1; AC_SUBST([HAVE_EUIDACCESS])
+ HAVE_EXECVPE=1; AC_SUBST([HAVE_EXECVPE])
+ HAVE_FACCESSAT=1; AC_SUBST([HAVE_FACCESSAT])
+ HAVE_FCHDIR=1; AC_SUBST([HAVE_FCHDIR])
+ HAVE_FCHOWNAT=1; AC_SUBST([HAVE_FCHOWNAT])
+ HAVE_FDATASYNC=1; AC_SUBST([HAVE_FDATASYNC])
+ HAVE_FSYNC=1; AC_SUBST([HAVE_FSYNC])
+ HAVE_FTRUNCATE=1; AC_SUBST([HAVE_FTRUNCATE])
+ HAVE_GETDTABLESIZE=1; AC_SUBST([HAVE_GETDTABLESIZE])
+ HAVE_GETENTROPY=1; AC_SUBST([HAVE_GETENTROPY])
+ HAVE_GETGROUPS=1; AC_SUBST([HAVE_GETGROUPS])
+ HAVE_GETHOSTNAME=1; AC_SUBST([HAVE_GETHOSTNAME])
+ HAVE_GETLOGIN=1; AC_SUBST([HAVE_GETLOGIN])
+ HAVE_GETPAGESIZE=1; AC_SUBST([HAVE_GETPAGESIZE])
+ HAVE_GETPASS=1; AC_SUBST([HAVE_GETPASS])
+ HAVE_GROUP_MEMBER=1; AC_SUBST([HAVE_GROUP_MEMBER])
+ HAVE_LCHOWN=1; AC_SUBST([HAVE_LCHOWN])
+ HAVE_LINK=1; AC_SUBST([HAVE_LINK])
+ HAVE_LINKAT=1; AC_SUBST([HAVE_LINKAT])
+ HAVE_PIPE=1; AC_SUBST([HAVE_PIPE])
+ HAVE_PIPE2=1; AC_SUBST([HAVE_PIPE2])
+ HAVE_PREAD=1; AC_SUBST([HAVE_PREAD])
+ HAVE_PWRITE=1; AC_SUBST([HAVE_PWRITE])
+ HAVE_READLINK=1; AC_SUBST([HAVE_READLINK])
+ HAVE_READLINKAT=1; AC_SUBST([HAVE_READLINKAT])
+ HAVE_SETHOSTNAME=1; AC_SUBST([HAVE_SETHOSTNAME])
+ HAVE_SLEEP=1; AC_SUBST([HAVE_SLEEP])
+ HAVE_SYMLINK=1; AC_SUBST([HAVE_SYMLINK])
+ HAVE_SYMLINKAT=1; AC_SUBST([HAVE_SYMLINKAT])
+ HAVE_UNLINKAT=1; AC_SUBST([HAVE_UNLINKAT])
+ HAVE_USLEEP=1; AC_SUBST([HAVE_USLEEP])
+ HAVE_DECL_ENVIRON=1; AC_SUBST([HAVE_DECL_ENVIRON])
+ HAVE_DECL_EXECVPE=1; AC_SUBST([HAVE_DECL_EXECVPE])
+ HAVE_DECL_FCHDIR=1; AC_SUBST([HAVE_DECL_FCHDIR])
+ HAVE_DECL_FDATASYNC=1; AC_SUBST([HAVE_DECL_FDATASYNC])
+ HAVE_DECL_GETDOMAINNAME=1; AC_SUBST([HAVE_DECL_GETDOMAINNAME])
+ HAVE_DECL_GETLOGIN=1; AC_SUBST([HAVE_DECL_GETLOGIN])
+ HAVE_DECL_GETLOGIN_R=1; AC_SUBST([HAVE_DECL_GETLOGIN_R])
+ HAVE_DECL_GETPAGESIZE=1; AC_SUBST([HAVE_DECL_GETPAGESIZE])
+ HAVE_DECL_GETUSERSHELL=1; AC_SUBST([HAVE_DECL_GETUSERSHELL])
+ HAVE_DECL_SETHOSTNAME=1; AC_SUBST([HAVE_DECL_SETHOSTNAME])
+ HAVE_DECL_TRUNCATE=1; AC_SUBST([HAVE_DECL_TRUNCATE])
+ HAVE_DECL_TTYNAME_R=1; AC_SUBST([HAVE_DECL_TTYNAME_R])
+ HAVE_OS_H=0; AC_SUBST([HAVE_OS_H])
+ HAVE_SYS_PARAM_H=0; AC_SUBST([HAVE_SYS_PARAM_H])
+ REPLACE_ACCESS=0; AC_SUBST([REPLACE_ACCESS])
+ REPLACE_CHOWN=0; AC_SUBST([REPLACE_CHOWN])
+ REPLACE_CLOSE=0; AC_SUBST([REPLACE_CLOSE])
+ REPLACE_COPY_FILE_RANGE=0; AC_SUBST([REPLACE_COPY_FILE_RANGE])
+ REPLACE_DUP=0; AC_SUBST([REPLACE_DUP])
+ REPLACE_DUP2=0; AC_SUBST([REPLACE_DUP2])
+ REPLACE_DUP3=0; AC_SUBST([REPLACE_DUP3])
+ REPLACE_EXECL=0; AC_SUBST([REPLACE_EXECL])
+ REPLACE_EXECLE=0; AC_SUBST([REPLACE_EXECLE])
+ REPLACE_EXECLP=0; AC_SUBST([REPLACE_EXECLP])
+ REPLACE_EXECV=0; AC_SUBST([REPLACE_EXECV])
+ REPLACE_EXECVE=0; AC_SUBST([REPLACE_EXECVE])
+ REPLACE_EXECVP=0; AC_SUBST([REPLACE_EXECVP])
+ REPLACE_EXECVPE=0; AC_SUBST([REPLACE_EXECVPE])
+ REPLACE_FACCESSAT=0; AC_SUBST([REPLACE_FACCESSAT])
+ REPLACE_FCHOWNAT=0; AC_SUBST([REPLACE_FCHOWNAT])
+ REPLACE_FDATASYNC=0; AC_SUBST([REPLACE_FDATASYNC])
+ REPLACE_FTRUNCATE=0; AC_SUBST([REPLACE_FTRUNCATE])
+ REPLACE_GETCWD=0; AC_SUBST([REPLACE_GETCWD])
+ REPLACE_GETDOMAINNAME=0; AC_SUBST([REPLACE_GETDOMAINNAME])
+ REPLACE_GETDTABLESIZE=0; AC_SUBST([REPLACE_GETDTABLESIZE])
+ REPLACE_GETENTROPY=0; AC_SUBST([REPLACE_GETENTROPY])
+ REPLACE_GETLOGIN_R=0; AC_SUBST([REPLACE_GETLOGIN_R])
+ REPLACE_GETGROUPS=0; AC_SUBST([REPLACE_GETGROUPS])
+ REPLACE_GETPAGESIZE=0; AC_SUBST([REPLACE_GETPAGESIZE])
+ REPLACE_GETPASS=0; AC_SUBST([REPLACE_GETPASS])
+ REPLACE_GETPASS_FOR_GETPASS_GNU=0; AC_SUBST([REPLACE_GETPASS_FOR_GETPASS_GNU])
+ REPLACE_ISATTY=0; AC_SUBST([REPLACE_ISATTY])
+ REPLACE_LCHOWN=0; AC_SUBST([REPLACE_LCHOWN])
+ REPLACE_LINK=0; AC_SUBST([REPLACE_LINK])
+ REPLACE_LINKAT=0; AC_SUBST([REPLACE_LINKAT])
+ REPLACE_LSEEK=0; AC_SUBST([REPLACE_LSEEK])
+ REPLACE_PIPE2=0; AC_SUBST([REPLACE_PIPE2])
+ REPLACE_PREAD=0; AC_SUBST([REPLACE_PREAD])
+ REPLACE_PWRITE=0; AC_SUBST([REPLACE_PWRITE])
+ REPLACE_READ=0; AC_SUBST([REPLACE_READ])
+ REPLACE_READLINK=0; AC_SUBST([REPLACE_READLINK])
+ REPLACE_READLINKAT=0; AC_SUBST([REPLACE_READLINKAT])
+ REPLACE_RMDIR=0; AC_SUBST([REPLACE_RMDIR])
+ REPLACE_SETHOSTNAME=0; AC_SUBST([REPLACE_SETHOSTNAME])
+ REPLACE_SLEEP=0; AC_SUBST([REPLACE_SLEEP])
+ REPLACE_SYMLINK=0; AC_SUBST([REPLACE_SYMLINK])
+ REPLACE_SYMLINKAT=0; AC_SUBST([REPLACE_SYMLINKAT])
+ REPLACE_TRUNCATE=0; AC_SUBST([REPLACE_TRUNCATE])
+ REPLACE_TTYNAME_R=0; AC_SUBST([REPLACE_TTYNAME_R])
+ REPLACE_UNLINK=0; AC_SUBST([REPLACE_UNLINK])
+ REPLACE_UNLINKAT=0; AC_SUBST([REPLACE_UNLINKAT])
+ REPLACE_USLEEP=0; AC_SUBST([REPLACE_USLEEP])
+ REPLACE_WRITE=0; AC_SUBST([REPLACE_WRITE])
+ UNISTD_H_HAVE_SYS_RANDOM_H=0; AC_SUBST([UNISTD_H_HAVE_SYS_RANDOM_H])
+ UNISTD_H_HAVE_WINSOCK2_H=0; AC_SUBST([UNISTD_H_HAVE_WINSOCK2_H])
+ UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS=0;
+ AC_SUBST([UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS])
+])
diff --git a/m4/gnulib/vararrays.m4 b/m4/gnulib/vararrays.m4
new file mode 100644
index 0000000..fd6230c
--- /dev/null
+++ b/m4/gnulib/vararrays.m4
@@ -0,0 +1,72 @@
+# Check for variable-length arrays.
+
+# serial 6
+
+# From Paul Eggert
+
+# Copyright (C) 2001, 2009-2023 Free Software Foundation, Inc.
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+m4_version_prereq([2.70], [], [
+
+# AC_C_VARARRAYS
+# --------------
+# Check whether the C compiler supports variable-length arrays.
+AC_DEFUN([AC_C_VARARRAYS],
+[
+ AC_CACHE_CHECK([for variable-length arrays],
+ ac_cv_c_vararrays,
+ [AC_EGREP_CPP([defined],
+ [#ifdef __STDC_NO_VLA__
+ defined
+ #endif
+ ],
+ [ac_cv_c_vararrays='no: __STDC_NO_VLA__ is defined'],
+ [AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[/* Test for VLA support. This test is partly inspired
+ from examples in the C standard. Use at least two VLA
+ functions to detect the GCC 3.4.3 bug described in:
+ https://lists.gnu.org/archive/html/bug-gnulib/2014-08/msg00014.html
+ */
+ #ifdef __STDC_NO_VLA__
+ syntax error;
+ #else
+ extern int n;
+ int B[100];
+ int fvla (int m, int C[m][m]);
+
+ int
+ simple (int count, int all[static count])
+ {
+ return all[count - 1];
+ }
+
+ int
+ fvla (int m, int C[m][m])
+ {
+ typedef int VLA[m][m];
+ VLA x;
+ int D[m];
+ static int (*q)[m] = &B;
+ int (*s)[n] = q;
+ return C && &x[0][0] == &D[0] && &D[0] == s[0];
+ }
+ #endif
+ ]])],
+ [ac_cv_c_vararrays=yes],
+ [ac_cv_c_vararrays=no])])])
+ if test "$ac_cv_c_vararrays" = yes; then
+ dnl This is for compatibility with Autoconf 2.61-2.69.
+ AC_DEFINE([HAVE_C_VARARRAYS], 1,
+ [Define to 1 if C supports variable-length arrays.])
+ elif test "$ac_cv_c_vararrays" = no; then
+ AC_DEFINE([__STDC_NO_VLA__], 1,
+ [Define to 1 if C does not support variable-length arrays, and
+ if the compiler does not already define this.])
+ fi
+])
+
+])
diff --git a/m4/gnulib/warn-on-use.m4 b/m4/gnulib/warn-on-use.m4
new file mode 100644
index 0000000..10649c5
--- /dev/null
+++ b/m4/gnulib/warn-on-use.m4
@@ -0,0 +1,62 @@
+# warn-on-use.m4 serial 10
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+# gl_WARN_ON_USE_PREPARE(INCLUDES, NAMES)
+# ---------------------------------------
+# If the module 'posixcheck' is in use:
+#
+# For each whitespace-separated element in the list of NAMES, define
+# HAVE_RAW_DECL_name if the function has a declaration among INCLUDES
+# even after being undefined as a macro.
+#
+# See warn-on-use.h for some hints on how to poison function names, as
+# well as ideas on poisoning global variables and macros. NAMES may
+# include global variables, but remember that only functions work with
+# _GL_WARN_ON_USE. Typically, INCLUDES only needs to list a single
+# header, but if the replacement header pulls in other headers because
+# some systems declare functions in the wrong header, then INCLUDES
+# should do likewise.
+#
+# It is generally safe to assume declarations for functions declared
+# in the intersection of C89 and C11 (such as printf) without
+# needing gl_WARN_ON_USE_PREPARE.
+AC_DEFUN([gl_WARN_ON_USE_PREPARE],
+[
+ m4_ifdef([gl_POSIXCHECK],
+ [m4_foreach_w([gl_decl], [$2],
+ [AH_TEMPLATE([HAVE_RAW_DECL_]AS_TR_CPP(m4_defn([gl_decl])),
+ [Define to 1 if ]m4_defn([gl_decl])[ is declared even after
+ undefining macros.])])dnl
+ for gl_func in m4_flatten([$2]); do
+ AS_VAR_PUSHDEF([gl_Symbol], [gl_cv_have_raw_decl_$gl_func])dnl
+ dnl As a workaround to implicit built-in function declarations in
+ dnl clang (e.g. strndup), reference ac_compile_for_check_decl instead
+ dnl of ac_compile. If, for whatever reason, the override of AC_PROG_CC
+ dnl in zzgnulib.m4 is inactive, use the original ac_compile.
+ ac_save_ac_compile="$ac_compile"
+ if test -n "$ac_compile_for_check_decl"; then
+ ac_compile="$ac_compile_for_check_decl"
+ fi
+ AC_CACHE_CHECK([whether $gl_func is declared without a macro],
+ [gl_Symbol],
+ [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([$1],
+[[#undef $gl_func
+ (void) $gl_func;]])],
+ [AS_VAR_SET([gl_Symbol], [yes])], [AS_VAR_SET([gl_Symbol], [no])])])
+ ac_compile="$ac_save_ac_compile"
+ AS_VAR_IF([gl_Symbol], [yes],
+ [AC_DEFINE_UNQUOTED(AS_TR_CPP([HAVE_RAW_DECL_$gl_func]), [1])
+ dnl Shortcut for an AC_CHECK_DECL invocation that may come later:
+ dnl If the raw declaration exists with the given includes, then
+ dnl AC_CHECK_DECL with its many includes would see it as well.
+ dnl So, set a cache variable to allow skipping any later
+ dnl AC_CHECK_DECL invocation for $gl_func.
+ eval "ac_cv_have_decl_$gl_func=yes"
+ ])
+ AS_VAR_POPDEF([gl_Symbol])dnl
+ done
+ ])
+])
diff --git a/m4/gnulib/wchar_t.m4 b/m4/gnulib/wchar_t.m4
new file mode 100644
index 0000000..50bde08
--- /dev/null
+++ b/m4/gnulib/wchar_t.m4
@@ -0,0 +1,24 @@
+# wchar_t.m4 serial 4 (gettext-0.18.2)
+dnl Copyright (C) 2002-2003, 2008-2023 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Bruno Haible.
+dnl Test whether has the 'wchar_t' type.
+dnl Prerequisite: AC_PROG_CC
+
+AC_DEFUN([gt_TYPE_WCHAR_T],
+[
+ AC_CACHE_CHECK([for wchar_t], [gt_cv_c_wchar_t],
+ [AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[#include
+ wchar_t foo = (wchar_t)'\0';]],
+ [[]])],
+ [gt_cv_c_wchar_t=yes],
+ [gt_cv_c_wchar_t=no])])
+ if test $gt_cv_c_wchar_t = yes; then
+ AC_DEFINE([HAVE_WCHAR_T], [1], [Define if you have the 'wchar_t' type.])
+ fi
+])
diff --git a/m4/gnulib/zzgnulib.m4 b/m4/gnulib/zzgnulib.m4
new file mode 100644
index 0000000..362102b
--- /dev/null
+++ b/m4/gnulib/zzgnulib.m4
@@ -0,0 +1,23 @@
+# zzgnulib.m4 serial 1
+dnl Copyright (C) 2020-2023 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl This file must be named something that sorts after all other
+dnl package- or gnulib-provided .m4 files - at least for those packages
+dnl that redefine AC_PROG_CC.
+
+dnl Redefine AC_PROG_CC so that it ends with invocations of gl_COMPILER_CLANG
+dnl and gl_COMPILER_PREPARE_CHECK_DECL.
+m4_define([AC_PROG_CC],
+ m4_defn([AC_PROG_CC])[
+gl_COMPILER_CLANG
+gl_COMPILER_PREPARE_CHECK_DECL
+])
+
+# gl_ZZGNULIB
+# -----------
+# Witness macro that this file has been included. Needed to force
+# Automake to include this file after all other gnulib .m4 files.
+AC_DEFUN([gl_ZZGNULIB])
diff --git a/src/Makefile.am b/src/Makefile.am
index bf4f884..69b1487 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -7,10 +7,13 @@ EXTRA_adplay_SOURCES = oss.cc oss.h null.h disk.cc disk.h esound.cc esound.h \
getopt1.c getopt.h
adplay_LDADD = $(drivers) $(adplug_LIBS) @ESD_LIBS@ @QSA_LIBS@ @SDL_LIBS@ \
- @ALSA_LIBS@ @AO_LIBS@ $(GETOPT_SOURCES)
-adplay_DEPENDENCIES = $(drivers) $(GETOPT_SOURCES)
+ @ALSA_LIBS@ @AO_LIBS@
+adplay_DEPENDENCIES = $(drivers)
adplug_data_dir = $(sharedstatedir)/adplug
AM_CPPFLAGS = $(adplug_CFLAGS) @ESD_CFLAGS@ @SDL_CFLAGS@ @ALSA_CFLAGS@ \
- -DADPLUG_DATA_DIR=\"$(adplug_data_dir)\"
+ -DADPLUG_DATA_DIR=\"$(adplug_data_dir)\" \
+ -I$(top_builddir)/gnulib -I$(top_srcdir)/gnulib
+
+LDADD = gnulib/libgnu.a
diff --git a/src/adplay.cc b/src/adplay.cc
index d93d16f..81b0589 100644
--- a/src/adplay.cc
+++ b/src/adplay.cc
@@ -17,6 +17,8 @@
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
+#include "config.h"
+
#include
#include
#include
diff --git a/src/alsa.cc b/src/alsa.cc
index 1229be8..c1ed622 100644
--- a/src/alsa.cc
+++ b/src/alsa.cc
@@ -17,6 +17,7 @@
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
+#include "config.h"
#include "defines.h"
#include "alsa.h"
diff --git a/src/defines.h b/src/defines.h
index 6c4e667..4566974 100644
--- a/src/defines.h
+++ b/src/defines.h
@@ -20,8 +20,6 @@
#ifndef H_DEFINES
#define H_DEFINES
-#include "config.h"
-
/***** Defines *****/
// AdPlay/UNIX version string
diff --git a/src/disk.cc b/src/disk.cc
index 3ba3695..e895532 100644
--- a/src/disk.cc
+++ b/src/disk.cc
@@ -17,6 +17,7 @@
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
+#include "config.h"
#include