diff options
| -rw-r--r-- | m4/gmp.m4 | 34 |
1 files changed, 21 insertions, 13 deletions
@@ -23,18 +23,26 @@ AC_DEFUN([cu_GMP], [cu_use_gmp=auto]) if test $cu_use_gmp != no; then - cu_saved_libs=$LIBS - AC_SEARCH_LIBS([__gmpz_init], [gmp], - [test "$ac_cv_search___gmpz_init" = "none required" || - { - LIB_GMP=$ac_cv_search___gmpz_init - AC_DEFINE([HAVE_GMP], [1], - [Define if you have GNU libgmp (or replacement)]) - # This only available in GMP >= 5 - AC_CHECK_DECLS([mpz_inits], [], [], [[#include <gmp.h>]]) - }], - [AC_MSG_WARN([libgmp development library was not found or not usable.]) - AC_MSG_WARN([AC_PACKAGE_NAME will be built without GMP support.])]) - LIBS=$cu_saved_libs + dnl It was noticed on one MacOS X 10.5.8 system at least + dnl that the libs were available but the header wasn't + HAVE_GMP=0 + AC_CHECK_HEADERS_ONCE([gmp.h]) + if test $ac_cv_header_gmp_h = yes; then + cu_saved_libs=$LIBS + AC_SEARCH_LIBS([__gmpz_init], [gmp], + [test "$ac_cv_search___gmpz_init" = "none required" || + LIB_GMP=$ac_cv_search___gmpz_init + AC_DEFINE([HAVE_GMP], [1], + [Define if you have GNU libgmp (or replacement)]) + HAVE_GMP=1 + # This only available in GMP >= 5 + AC_CHECK_DECLS([mpz_inits], [], [], [[#include <gmp.h>]]) + ]) + LIBS=$cu_saved_libs + fi + if test $HAVE_GMP != 1; then + AC_MSG_WARN([libgmp development library was not found or not usable.]) + AC_MSG_WARN([AC_PACKAGE_NAME will be built without GMP support.]) + fi fi ]) |