Mercurial > gnulib
view m4/free.m4 @ 40237:b1386ce84ff5
fatal-signal: Add function that lists the fatal signals.
* lib/fatal-signal.h (get_fatal_signals): New declaration.
* lib/fatal-signal.c (get_fatal_signals): New function.
author | Bruno Haible <bruno@clisp.org> |
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date | Sat, 16 Mar 2019 17:48:06 +0100 |
parents | b06060465f09 |
children |
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# Check whether free (NULL) is supposed to work. # Copyright (C) 2003-2005, 2009-2019 Free Software Foundation, Inc. # This file is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, # with or without modifications, as long as this notice is preserved. # Written by Paul Eggert. # We can't test for free (NULL) even at runtime, since it might # happen to "work" for our test program, but not in general. So, be # conservative and use feature tests for relatively modern hosts, # where free (NULL) is known to work. This costs a bit of # performance on some older hosts, but we can fix that later if # needed. AC_DEFUN([gl_FUNC_FREE], [ AC_REQUIRE([AC_CANONICAL_HOST]) AC_CACHE_CHECK([whether free (NULL) is known to work], [gl_cv_func_free], [case "$host_os" in mingw*) gl_cv_func_free=yes ;; *) AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [[@%:@include <unistd.h>]], [[@%:@if _POSIX_VERSION < 199009L && \ (defined unix || defined _unix || defined _unix_ \ || defined __unix || defined __unix__) @%:@error "'free (NULL)' is not known to work" @%:@endif]])], [gl_cv_func_free=yes], [gl_cv_func_free=no]) esac ]) if test $gl_cv_func_free = no; then AC_DEFINE([free], [rpl_free], [Define to rpl_free if the replacement function should be used.]) fi ]) # Prerequisites of lib/free.c. AC_DEFUN([gl_PREREQ_FREE], [:])