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