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45 lines
1.2 KiB
Plaintext
45 lines
1.2 KiB
Plaintext
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# Configure the GMP library or a replacement.
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dnl Copyright 2020 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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AC_DEFUN([gl_LIBGMP],
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[
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AC_ARG_WITH([libgmp],
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[AS_HELP_STRING([--without-libgmp],
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[do not use the GNU Multiple Precision (GMP) library;
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this is the default on systems lacking libgmp.])])
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AC_CHECK_HEADERS_ONCE([gmp.h])
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GMP_H=gmp.h
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LIB_GMP=
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case $with_libgmp in
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no) ;;
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yes) GMP_H= LIB_GMP=-lgmp;;
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*) if test "$ac_cv_header_gmp_h" = yes; then
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gl_saved_LIBS=$LIBS
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AC_SEARCH_LIBS([__gmpz_roinit_n], [gmp])
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LIBS=$gl_saved_LIBS
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case $ac_cv_search___gmpz_roinit_n in
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'none needed')
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GMP_H=;;
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-*)
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GMP_H= LIB_GMP=$ac_cv_search___gmpz_roinit_n;;
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esac
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fi;;
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esac
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if test -z "$GMP_H"; then
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AC_DEFINE([HAVE_GMP], 1,
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[Define to 1 if you have the GMP library instead of just the
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mini-gmp replacement.])
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fi
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AC_SUBST([LIB_GMP])
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AC_SUBST([GMP_H])
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AM_CONDITIONAL([GL_GENERATE_GMP_H], [test -n "$GMP_H"])
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])
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