configure.in

AC_INIT(mrbayes, 3.2, http://www.mrbayes.net)
AC_CONFIG_SRCDIR(bayes.c)
AC_CONFIG_HEADER(config.h)

AC_ARG_ENABLE(debug, 
    [--enable-debug=[no/yes] compile with debug support [default="no"]]
    ,,enable_debug="no")
CFLAGS_DEFINED="NOTICE: Because the variable \$CFLAGS is defined in your shell, the 
default MrBayes flags will be overridden. To ensure optimal performance, please check 
that your \$CFLAGS variable is set correctly. Alternatively, unset the \$CFLAGS 
variable in your shell in order to use the default MrBayes compiler options."
if test -n "${CFLAGS+x}"; then
    AC_MSG_NOTICE([$CFLAGS_DEFINED]);
fi
if test "x$enable_debug" == "xyes"; then
    : ${CFLAGS="-ggdb -Wall"}
else
    : ${CFLAGS="-O3"}; CFLAGS=$CFLAGS" -DNDEBUG";
fi
AC_PROG_CC

AC_HEADER_STDC
AC_CHECK_LIB([m], [exp])
AC_PROG_INSTALL

NOMPICC="No compiler for mpi has been found. If this is incorrect, please adjust your 
path and rerun configure."
AC_ARG_ENABLE(mpi, 
    [--enable-mpi=[no/yes] compile the parallel version of mrbayes [default="no"]]
    ,,enable_mpi="no")
if test "x$enable_mpi" == "xyes"; then
    AC_CHECK_PROG(mpicc,mpicc,yes,no)
    if test "x$mpicc" == "xno"; then
        AC_MSG_ERROR($NOMPICC);
    fi
    AC_DEFINE(MPI_ENABLED)
fi

if test "x$enable_openmp" == "xyes"; then
    AC_DEFINE(OPENMP)
fi

# AC_ARG_ENABLE(fastlog, 
#     [--enable-fastlog=[no/yes] enable fast log operations [default="no"]]
#     ,,enable_fastlog="no")
# if test "x$enable_fastlog" == "xyes"; then
#     AC_DEFINE(FAST_VERSION)
# fi

AC_LANG_C

AC_ARG_ENABLE(sse, 
    [--enable-sse=[no/yes] enable sse instructions [default="yes"]]
    ,,enable_sse="yes")
if test "x$enable_sse" == "xyes"; then
    AC_MSG_CHECKING(for SSE support)
    AC_RUN_IFELSE(
    [AC_LANG_SOURCE(
    [
    #include <xmmintrin.h>
    int main(){
    int res;
    __m128          m1, m2;
    void *ptr = (void *) NULL;
    const size_t align = 32;
    res = posix_memalign(&ptr, align, align);
    m1 = _mm_add_ps (m2, m1);
    return 0;
    }
    ])],
    AC_MSG_RESULT(yes)
    AC_DEFINE(SSE_ENABLED)
    , AC_MSG_RESULT(no)
    )
fi

# ------------------------------------------------------------------------------
# Setup BEAGLE
# ------------------------------------------------------------------------------

AC_ARG_WITH([beagle],
    [AS_HELP_STRING([--with-beagle[[=PATH]]],
    [enable beagle and optionally set prefix where beagle is installed if not 
    /usr/local @<:@default=yes@:>@])],
    [],
    [with_beagle=yes])
   
AC_ARG_ENABLE(threads, 
    [--enable-threads=[no/yes] enable thread-support when using BEAGLE [default="no"]]
    ,,enable_threads="no")  

if test "x$with_beagle" != "xno"
then
    if test "x$with_beagle" == "xyes"
    then
        with_beagle=/usr/local
    fi

    AC_CHECK_FILE($with_beagle/include/libhmsbeagle/libhmsbeagle/beagle.h,
       [BEAGLE_CFLAGS="-I$with_beagle/include/libhmsbeagle"],
       [AC_CHECK_FILE($with_beagle/include/libhmsbeagle-1/libhmsbeagle/beagle.h,
        [BEAGLE_CFLAGS="-I$with_beagle/include/libhmsbeagle-1"],   
        [AC_MSG_ERROR([beagle's library include file beagle.h is not found neither in 
         ${with_beagle}/include/libhmsbeagle/libhmsbeagle/ nor in 
         ${with_beagle}/include/libhmsbeagle-1/libhmsbeagle/]. You should either install 
         beagle library from http://code.google.com/p/beagle-lib/ or disable use of 
         beagle library by invoking configure script with option --with-beagle=no. 
         Note: without beagle library MrBayes may run slower.)])])
    AC_CHECK_FILE($with_beagle/include/libhmsbeagle/libhmsbeagle/platform.h,,
       [AC_CHECK_FILE($with_beagle/include/libhmsbeagle-1/libhmsbeagle/platform.h,,   
        [AC_MSG_ERROR([beagle's library include file platform.h is not found neither in 
         ${with_beagle}/include/libhmsbeagle/libhmsbeagle/ nor in 
         ${with_beagle}/include/libhmsbeagle-1/libhmsbeagle/]. You should either install 
         beagle library from http://code.google.com/p/beagle-lib/ or disable use of 
         beagle library by invoking configure script with option --with-beagle=no. 
         Note: without beagle library MrBayes may run slower.)])])
    AC_CHECK_FILE($with_beagle/lib,[BEAGLE_LIBS="-L$with_beagle/lib -lhmsbeagle"],
       [AC_MSG_ERROR([beagle library is not found in ${with_beagle}]. You should either 
        install beagle library from http://code.google.com/p/beagle-lib/ or disable use 
        of beagle library by invoking configure script with option --with-beagle=no. 
        Note: without beagle library MrBayes may run slower.)])

    AC_DEFINE(BEAGLE_ENABLED)
    CFLAGS="${CFLAGS} ${BEAGLE_CFLAGS}"
    LDFLAGS="${LDFLAGS} ${BEAGLE_LIBS}"
   
    # ----- Check for pthreads compatibility -------
   
    if test "x$enable_threads" == "xyes"
    then
        AC_CHECK_LIB(pthread,pthread_create,[THREAD_LIB="-lpthread"],
        [AC_MSG_ERROR([pthreads library not found])])
        AC_DEFINE(THREADS_ENABLED)
    fi
fi
# ------------------------------------------------------------------------------

dnl check OS 
dnl case $host in
dnl i386-*-gnu*) 
dnl     bla;;
dnl esac
AC_DEFINE(UNIX_VERSION)

dnl use c for custom tests
AC_LANG_C

dnl check readline
AC_CHECK_LIB([readline], [readline])
if test $ac_cv_lib_readline_readline = yes; then
    LDFLAGS=${LDFLAGS}" -lreadline"
    AC_MSG_CHECKING(for rl_completion_matches function)
    AC_LINK_IFELSE(
    [AC_LANG_SOURCE([
    #include <stdio.h>
    #include <readline/readline.h>
    #include <readline/history.h>
    char *f(const char *a, int f) { return "a"; }
    int main() {
      char *text="a";
      extern char *f(const char *, int);
      char **matches = rl_completion_matches (text, f);
      return 0;
    }
    ])],
    AC_MSG_RESULT(yes)
    AC_DEFINE(COMPLETIONMATCHES), AC_MSG_RESULT(no))
fi

dnl check for 64 bit
AC_MSG_CHECKING(for 32 or 64 bits cpu)
AC_RUN_IFELSE(
    [AC_LANG_SOURCE([
    int main() { return sizeof(long)==4?1:0; }
    ])],
    AC_MSG_RESULT(64)
    AC_DEFINE(_64BIT), AC_MSG_RESULT(32))

dnl finish
if test "x$enable_mpi" == "xyes"; then
    CC=mpicc
fi

AC_CONFIG_FILES([Makefile])
AC_OUTPUT