diff options
Diffstat (limited to 'acm4/gmp.m4')
| -rw-r--r-- | acm4/gmp.m4 | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/acm4/gmp.m4 b/acm4/gmp.m4 new file mode 100644 index 00000000..beea42b5 --- /dev/null +++ b/acm4/gmp.m4 @@ -0,0 +1,30 @@ +AC_DEFUN(AM_WITH_GMP, + [AC_MSG_CHECKING(if extended and fractional arithmetic is wanted) + AC_ARG_WITH(gmp, + [ --with-gmp use gmp for extended and fractional arithmetic], + [use_gmp=$withval], [use_gmp=no]) + AC_MSG_RESULT($use_gmp) + + if test "$use_gmp" = yes; then + LIBS="$LIBS -lgmp" + AC_CHECK_HEADER([gmp.h], + [AC_CACHE_CHECK([for mpq_init in libgmp], ac_cv_func_mpq_init_libgmp, + [AC_TRY_LINK([#include <gmp.h>], + [mpq_t x; (void)mpq_init(x)], + ac_cv_func_mpq_init_libgmp=yes, + ac_cv_func_mpq_init_libgmp=no)])], + ac_cv_func_mpq_init_libgmp=no) + + if test "$ac_cv_func_mpq_init_libgmp$ac_cv_header_gmp_h" = yesyes; then + AC_DEFINE(WITH_GMP) + else + LIBS=`echo $LIBS | sed -e 's/-lgmp//'` + AC_MSG_WARN([gmp library not found or does not appear to work]) + use_gmp=no + fi + fi + + if test "$use_gmp" != yes; then + AC_CHECK_SIZEOF(long long int, 0) + fi + ]) |