diff options
Diffstat (limited to 'm4/sleep.m4')
| -rw-r--r-- | m4/sleep.m4 | 24 |
1 files changed, 17 insertions, 7 deletions
diff --git a/m4/sleep.m4 b/m4/sleep.m4 index 37f19a9..a27baa6 100644 --- a/m4/sleep.m4 +++ b/m4/sleep.m4 @@ -1,5 +1,5 @@ -# sleep.m4 serial 5 -dnl Copyright (C) 2007-2011 Free Software Foundation, Inc. +# sleep.m4 serial 7 +dnl Copyright (C) 2007-2013 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. @@ -7,12 +7,13 @@ 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_DECLS([sleep], , , [[#include <unistd.h>]]) AC_CHECK_FUNCS_ONCE([sleep]) if test $ac_cv_have_decl_sleep != yes; then HAVE_SLEEP=0 @@ -44,9 +45,18 @@ handle_alarm (int sig) return 0; ]])], [gl_cv_func_sleep_works=yes], [gl_cv_func_sleep_works=no], - [gl_cv_func_sleep_works="guessing no"])]) - if test "$gl_cv_func_sleep_works" != yes; then - REPLACE_SLEEP=1 - fi + [case "$host_os" in + # Guess yes on glibc systems. + *-gnu*) gl_cv_func_sleep_works="guessing yes" ;; + # If we don't know, assume the worst. + *) gl_cv_func_sleep_works="guessing no" ;; + esac + ])]) + case "$gl_cv_func_sleep_works" in + *yes) ;; + *) + REPLACE_SLEEP=1 + ;; + esac fi ]) |