Mercurial > gnulib
view m4/sleep.m4 @ 40177:dcd889592b62
dtoastr,ftoastr,ldtoastr: port to c-strtod changes
Decouple these modules from c-strtod. Nowadays it’s reasonable to
assume the C99 signatures for strtod and strtold. Programs that
require stricter adherence to C99 should also use the strtod and
strtold modules as needed, and we no longer need the
HAVE_C99_STRTOLD macro.
* NEWS: Mention this.
* lib/ftoastr.c (STRTOF) [LENGTH == 3]: Assume strtold.
* m4/c-strtod.m4 (gl_C_STRTOLD): Do not define HAVE_C99_STRTOLD.
* modules/dtoastr, modules/ftoastr, modules/ldtoastr:
(Files): Remove m4/c-strtod.m4.
(configure.ac): Do not require gl_C99_STRTOLD, which no longer
exists.
author | Paul Eggert <eggert@cs.ucla.edu> |
---|---|
date | Sat, 02 Feb 2019 13:01:55 -0800 |
parents | b06060465f09 |
children |
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# sleep.m4 serial 9 dnl Copyright (C) 2007-2019 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. AC_DEFUN([gl_FUNC_SLEEP], [ AC_REQUIRE([gl_UNISTD_H_DEFAULTS]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles dnl We expect to see the declaration of sleep() in a header file. dnl Older versions of mingw have a sleep() function that is an alias to dnl _sleep() in MSVCRT. It has a different signature than POSIX sleep(): dnl it takes the number of milliseconds as argument and returns void. dnl mingw does not declare this function. AC_CHECK_DECLS([sleep], , , [[#include <unistd.h>]]) AC_CHECK_FUNCS_ONCE([sleep]) if test $ac_cv_have_decl_sleep != yes; then HAVE_SLEEP=0 else dnl Cygwin 1.5.x has a bug where sleep can't exceed 49.7 days. AC_CACHE_CHECK([for working sleep], [gl_cv_func_sleep_works], [AC_RUN_IFELSE([AC_LANG_PROGRAM([[ #include <errno.h> #include <unistd.h> #include <signal.h> static void handle_alarm (int sig) { if (sig != SIGALRM) _exit (2); } ]], [[ /* Failure to compile this test due to missing alarm is okay, since all such platforms (mingw) also lack sleep. */ unsigned int pentecost = 50 * 24 * 60 * 60; /* 50 days. */ unsigned int remaining; signal (SIGALRM, handle_alarm); alarm (1); remaining = sleep (pentecost); if (remaining > pentecost) return 3; if (remaining <= pentecost - 10) return 4; return 0; ]])], [gl_cv_func_sleep_works=yes], [gl_cv_func_sleep_works=no], [case "$host_os" in # Guess yes on glibc systems. *-gnu* | gnu*) gl_cv_func_sleep_works="guessing yes" ;; # Guess no on native Windows. mingw*) gl_cv_func_sleep_works="guessing no" ;; # If we don't know, assume the worst. *) gl_cv_func_sleep_works="guessing no" ;; esac ])]) case "$gl_cv_func_sleep_works" in *yes) ;; *) REPLACE_SLEEP=1 ;; esac fi ])