Mercurial > gnulib
view m4/limits-h.m4 @ 40246:c34f677e6117 default tip master
_Noreturn: GCC 4.7 does not support [[noreturn]] in C++11 mode
* lib/_Noreturn.h, m4/gnulib-common.m4: Don't use [[noreturn]] before
GCC 4.8.
author | Akim Demaille <akim.demaille@gmail.com> |
---|---|
date | Sun, 17 Mar 2019 19:27:20 +0100 |
parents | b06060465f09 |
children |
line wrap: on
line source
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"]) ])