| AC_DEFUN([AX_DETECT_GMP], [ |
| AC_DEFINE([USE_GMP_FOR_MP], [], [use gmp to implement isl_int]) |
| AX_SUBMODULE(gmp,system|build,system) |
| case "$with_gmp" in |
| system) |
| if test "x$with_gmp_prefix" != "x"; then |
| MP_CPPFLAGS="-I$with_gmp_prefix/include" |
| MP_LDFLAGS="-L$with_gmp_prefix/lib" |
| fi |
| MP_LIBS=-lgmp |
| SAVE_CPPFLAGS="$CPPFLAGS" |
| SAVE_LDFLAGS="$LDFLAGS" |
| SAVE_LIBS="$LIBS" |
| CPPFLAGS="$MP_CPPFLAGS $CPPFLAGS" |
| LDFLAGS="$MP_LDFLAGS $LDFLAGS" |
| LIBS="$MP_LIBS $LIBS" |
| AC_CHECK_HEADER([gmp.h], [], [AC_ERROR([gmp.h header not found])]) |
| AC_CHECK_LIB([gmp], [main], [], [AC_ERROR([gmp library not found])]) |
| AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <gmp.h>]], [[ |
| mpz_t n, d; |
| if (mpz_divisible_p(n, d)) |
| mpz_divexact_ui(n, n, 4); |
| ]])], [], [AC_ERROR([gmp library too old])]) |
| CPPFLAGS="$SAVE_CPPFLAGS" |
| LDFLAGS="$SAVE_LDFLAGS" |
| LIBS="$SAVE_LIBS" |
| ;; |
| build) |
| MP_CPPFLAGS="-I$gmp_srcdir -I$with_gmp_builddir" |
| MP_LIBS="$with_gmp_builddir/libgmp.la" |
| ;; |
| esac |
| SAVE_CPPFLAGS="$CPPFLAGS" |
| SAVE_LDFLAGS="$LDFLAGS" |
| SAVE_LIBS="$LIBS" |
| CPPFLAGS="$MP_CPPFLAGS $CPPFLAGS" |
| LDFLAGS="$MP_LDFLAGS $LDFLAGS" |
| LIBS="$MP_LIBS $LIBS" |
| need_get_memory_functions=false |
| AC_CHECK_DECLS(mp_get_memory_functions,[],[ |
| need_get_memory_functions=true |
| ],[#include <gmp.h>]) |
| CPPFLAGS="$SAVE_CPPFLAGS" |
| LDFLAGS="$SAVE_LDFLAGS" |
| LIBS="$SAVE_LIBS" |
| AM_CONDITIONAL(NEED_GET_MEMORY_FUNCTIONS, test x$need_get_memory_functions = xtrue) |
| ]) |
