Mercurial > gnulib
view m4/limits-h.m4 @ 40227:5207eb0dcd2a
tests: Avoid havoc with "gcc -fcheck-pointer-bounds".
* tests/test-fprintf-posix2.c: Skip the test when -fcheck-pointer-bounds
is in use.
* tests/test-printf-posix2.c: Likewise.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Sun, 10 Mar 2019 17:09:30 +0100 |
parents | b06060465f09 |
children |
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dnl Check whether limits.h has needed features. dnl Copyright 2016-2019 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl From Paul Eggert. AC_DEFUN_ONCE([gl_LIMITS_H], [ gl_CHECK_NEXT_HEADERS([limits.h]) AC_CACHE_CHECK([whether limits.h has LLONG_MAX, WORD_BIT, ULLONG_WIDTH etc.], [gl_cv_header_limits_width], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [[#ifndef __STDC_WANT_IEC_60559_BFP_EXT__ #define __STDC_WANT_IEC_60559_BFP_EXT__ 1 #endif #include <limits.h> long long llm = LLONG_MAX; int wb = WORD_BIT; int ullw = ULLONG_WIDTH; ]])], [gl_cv_header_limits_width=yes], [gl_cv_header_limits_width=no])]) if test "$gl_cv_header_limits_width" = yes; then LIMITS_H= else LIMITS_H=limits.h fi AC_SUBST([LIMITS_H]) AM_CONDITIONAL([GL_GENERATE_LIMITS_H], [test -n "$LIMITS_H"]) ]) dnl Unconditionally enables the replacement of <limits.h>. AC_DEFUN([gl_REPLACE_LIMITS_H], [ AC_REQUIRE([gl_LIMITS_H]) LIMITS_H='limits.h' AM_CONDITIONAL([GL_GENERATE_LIMITS_H], [test -n "$LIMITS_H"]) ])