1
Fork 0
mirror of https://git.savannah.gnu.org/git/guile.git synced 2025-04-29 19:30:36 +02:00
guile/m4/limits-h.m4
Ludovic Courtès aeb22f4861 Update Gnulib to v0.1-5703-g356a414e8c and add 'posix_spawn' module.
This is a followup to edfca3b7e5, which
added the 'posix_spawnp' module but not 'posix_spawn'.

* m4/gnulib-cache.m4: Add 'posix_spawn' module.
* gnulib-local/m4/clock_time.m4.diff: Adjust.
* configure.ac: Move 'gl_EARLY' use right after 'AC_PROG_CC'.
2023-01-18 22:50:18 +01:00

41 lines
1.2 KiB
Text

dnl Check whether limits.h has needed features.
dnl Copyright 2016-2023 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 WORD_BIT, BOOL_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;
int bw = BOOL_WIDTH;
]])],
[gl_cv_header_limits_width=yes],
[gl_cv_header_limits_width=no])])
if test "$gl_cv_header_limits_width" = yes; then
GL_GENERATE_LIMITS_H=false
else
GL_GENERATE_LIMITS_H=true
fi
])
dnl Unconditionally enables the replacement of <limits.h>.
AC_DEFUN([gl_REPLACE_LIMITS_H],
[
AC_REQUIRE([gl_LIMITS_H])
GL_GENERATE_LIMITS_H=true
])