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# Configure paths for GMP
# Hans Petter Jansson 2001-04-29
# Modified slightly by Allin Cottrell, April 2003
# Based on macros by Owen Taylor.
dnl AM_PATH_GMP([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
dnl Test for GMP, and define GMP_CFLAGS and GMP_LIBS.
dnl
AC_DEFUN([AM_PATH_GMP],
[dnl
AC_ARG_WITH(gmp-prefix,[ --with-gmp-prefix=PFX Prefix where GMP is installed (optional)],
gmp_config_prefix="$withval", gmp_config_prefix="")
if test x$gmp_config_prefix != x ; then
gmp_config_args="$gmp_config_args --prefix=$gmp_config_prefix"
fi
min_gmp_version=ifelse([$1], ,1.0.0,$1)
AC_MSG_CHECKING(for GMP - version >= $min_gmp_version)
GMP_CFLAGS="-I$gmp_config_prefix/include"
GMP_LIBS="-L$gmp_config_prefix/lib -lgmp"
ac_save_CFLAGS="$CFLAGS"
ac_save_LIBS="$LIBS"
CFLAGS="$CFLAGS $GMP_CFLAGS"
LIBS="$GMP_LIBS $LIBS"
dnl
dnl Now check if the installed GMP is sufficiently new.
dnl
rm -f conf.gmptest
AC_TRY_RUN([
#include <gmp.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int
main ()
{
int gmp_major_version = 0, gmp_minor_version = 0, gmp_micro_version = 0;
int major, minor, micro;
char *tmp_version;
mpz_t a, b, c;
mpz_init(a);
mpz_init(b);
mpz_init(c);
mpz_mul(c, a, b);
system("touch conf.gmptest");
#ifdef __GNU_MP_VERSION
gmp_major_version = __GNU_MP_VERSION;
#endif
#ifdef __GNU_MP_VERSION_MINOR
gmp_minor_version = __GNU_MP_VERSION_MINOR;
#endif
#ifdef __GNU_MP_VERSION_PATCHLEVEL
gmp_micro_version = __GNU_MP_VERSION_PATCHLEVEL;
#endif
/* HP/UX 9 (%@#!) writes to sscanf strings */
tmp_version = strdup("$min_gmp_version");
if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, µ) != 3) {
printf("%s, bad version string\n", "$min_gmp_version");
exit(1);
}
if ((gmp_major_version > major) ||
((gmp_major_version == major) && (gmp_minor_version > minor)) ||
((gmp_major_version == major) && (gmp_minor_version == minor) && (gmp_micro_version >= micro))) {
return 0;
} else {
printf("\n*** An old version of GNU MP (%d.%d.%d) was found.\n",
gmp_major_version, gmp_minor_version, gmp_micro_version);
printf("*** You need a version of GNU MP newer than %d.%d.%d. The latest version of\n",
major, minor, micro);
printf("*** GNU MP is always available from ftp://ftp.gnu.org.\n");
printf("***\n");
}
return 1;
}
],, no_gmp=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
CFLAGS="$ac_save_CFLAGS"
LIBS="$ac_save_LIBS"
if test "x$no_gmp" = x ; then
AC_MSG_RESULT(yes)
ifelse([$2], , :, [$2])
else
AC_MSG_RESULT(no)
if test -f conf.gmptest ; then
:
else
echo "*** Could not run GNU MP test program, checking why..."
CFLAGS="$CFLAGS $GMP_CFLAGS"
LIBS="$LIBS $GMP_LIBS"
AC_TRY_LINK([
#include <gmp.h>
#include <stdio.h>
], [ return (1); ],
[ echo "*** The test program compiled, but did not run. This usually means"
echo "*** that the run-time linker is not finding GNU MP or finding the wrong"
echo "*** version of GNU MP. If it is not finding GNU MP, you'll need to set your"
echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point"
echo "*** to the installed location Also, make sure you have run ldconfig if that"
echo "*** is required on your system"
echo "***"
echo "*** If you have an old version installed, it is best to remove it, although"
echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"
echo "***" ],
[ echo "*** The test program failed to compile or link. See the file config.log for the"
echo "*** exact error that occured. This usually means GNU MP was incorrectly installed"
echo "*** or that you have moved GNU MP since it was installed." ])
CFLAGS="$ac_save_CFLAGS"
LIBS="$ac_save_LIBS"
fi
GMP_CFLAGS=""
GMP_LIBS=""
ifelse([$3], , :, [$3])
fi
if test "$GMP_CFLAGS" = "-I/include" ; then
GMP_CFLAGS=""
fi
if test "$GMP_LIBS" = "-L/lib -lgmp" ; then
GMP_LIBS="-lgmp"
fi
AC_SUBST(GMP_CFLAGS)
AC_SUBST(GMP_LIBS)
rm -f conf.gmptest
])
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