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39 lines
1.2 KiB
Plaintext
39 lines
1.2 KiB
Plaintext
# Tests for GNU GMP (or any compatible replacement).
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dnl Copyright (C) 2008-2010 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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dnl Written by James Youngman.
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dnl Check for libgmp. We avoid use of AC_CHECK_LIBS because we don't want to
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dnl add this to $LIBS for all targets.
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AC_DEFUN([cu_GMP],
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[
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LIB_GMP=
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AC_SUBST([LIB_GMP])
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AC_ARG_WITH([gmp],
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AS_HELP_STRING([--without-gmp],
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[do not use the GNU MP library for arbitrary precision
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calculation (default: use it if available)]),
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[cu_use_gmp=$withval],
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[cu_use_gmp=auto])
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if test $cu_use_gmp != no; then
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cu_saved_libs=$LIBS
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AC_SEARCH_LIBS([__gmpz_init], [gmp],
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[test "$ac_cv_search___gmpz_init" = "none required" ||
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{
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LIB_GMP=$ac_cv_search___gmpz_init
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AC_DEFINE([HAVE_GMP], [1],
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[Define if you have GNU libgmp (or replacement)])
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}],
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[AC_MSG_WARN([libgmp development library was not found or not usable.])
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AC_MSG_WARN([AC_PACKAGE_NAME will be built without GMP support.])])
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LIBS=$cu_saved_libs
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fi
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])
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