configure.ac: Do not use '+=' to set CFLAGS to be POSIX-compliant

The '+=' operator used in configure.ac to append to the CFLAGS variable is present in Bash, but not the POSIX sh specification. Therefore, the aforementioned part of the configure.ac (from which the configure script is obtained) might not run correctly under non Bash-like POSIX compliant shells (dash - default shell on Debian, ash, etc). Bug: https://bugs.gentoo.org/924200 Signed-off-by: Zurab Kvachadze <[email protected]>
libimobiledevice · Sep 14, 2024 · a2cafe2 · a2cafe2
1 parent f8be60c
commit a2cafe2
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/configure.ac b/configure.ac
@@ -40,7 +40,7 @@ if test "x$have_limd" = "xyes"; then
     AC_SUBST(libimobiledevice_CFLAGS)
     AC_SUBST(libimobiledevice_LIBS)
     CACHED_CFLAGS="$CFLAGS"
-    CFLAGS+=" $libimobiledevice_CFLAGS"
+    CFLAGS="$CFLAGS $libimobiledevice_CFLAGS"
     AC_CACHE_CHECK(for enum idevice_connection_type, ac_cv_enum_idevice_connection_type,
       AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
         #include <libimobiledevice/libimobiledevice.h>