Mercurial > gnulib
view m4/usleep.m4 @ 17363:5a51fb7777a9
sys_select, sys_time: port 2013-01-30 Solaris 2.6 fix to Cygwin
Problem reported by Marco Atzeri in
<http://lists.gnu.org/archive/html/bug-gnulib/2013-03/msg00000.html>.
* lib/sys_select.in.h [HAVE_SYS_SELECT_H && _CYGWIN_SYS_TIME_H]:
Simply delegate to the system <sys/select.h> in this case too.
Also, pay attention to _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TIME_H only
if OSF/1, since otherwise Cygwin breaks, and it doesn't seem to
be needed on Solaris either.
* lib/sys_time.in.h [_CYGWIN_SYS_TIME_H]:
Simply delgate to the system <sys/time.h> in this case.
author | Paul Eggert <eggert@cs.ucla.edu> |
---|---|
date | Tue, 19 Mar 2013 09:08:47 -0700 |
parents | e542fd46ad6f |
children | 344018b6e5d7 |
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# usleep.m4 serial 3 dnl Copyright (C) 2009-2013 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. dnl This macro intentionally does not check for select or nanosleep; dnl both of those modules can require external libraries. AC_DEFUN([gl_FUNC_USLEEP], [ AC_REQUIRE([gl_UNISTD_H_DEFAULTS]) dnl usleep was required in POSIX 2001, but dropped as obsolete in dnl POSIX 2008; therefore, it is not always exposed in headers. AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_CHECK_FUNCS_ONCE([usleep]) AC_CHECK_TYPE([useconds_t], [], [AC_DEFINE([useconds_t], [unsigned int], [Define to an unsigned 32-bit type if <sys/types.h> lacks this type.])]) if test $ac_cv_func_usleep = no; then HAVE_USLEEP=0 else dnl POSIX allows implementations to reject arguments larger than dnl 999999, but GNU guarantees it will work. AC_CACHE_CHECK([whether usleep allows large arguments], [gl_cv_func_usleep_works], [AC_RUN_IFELSE([AC_LANG_PROGRAM([[ #include <unistd.h> ]], [[return !!usleep (1000000);]])], [gl_cv_func_usleep_works=yes], [gl_cv_func_usleep_works=no], [case "$host_os" in # Guess yes on glibc systems. *-gnu*) gl_cv_func_usleep_works="guessing yes" ;; # If we don't know, assume the worst. *) gl_cv_func_usleep_works="guessing no" ;; esac ])]) case "$gl_cv_func_usleep_works" in *yes) ;; *) REPLACE_USLEEP=1 ;; esac fi ])