Mercurial > gnulib
view m4/pselect.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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# pselect.m4 serial 2 dnl Copyright (C) 2011-2013 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. AC_DEFUN([gl_FUNC_PSELECT], [ AC_REQUIRE([gl_HEADER_SYS_SELECT]) AC_REQUIRE([AC_C_RESTRICT]) AC_CHECK_FUNCS_ONCE([pselect]) if test $ac_cv_func_pselect = yes; then AC_CACHE_CHECK([whether signature of pselect conforms to POSIX], gl_cv_sig_pselect, [AC_LINK_IFELSE( [AC_LANG_PROGRAM( [[#include <sys/select.h> ]], [[int (*p) (int, fd_set *, fd_set *, fd_set *restrict, struct timespec const *restrict, sigset_t const *restrict) = pselect; return !p;]])], [gl_cv_sig_pselect=yes], [gl_cv_sig_pselect=no])]) dnl On FreeBSD 8.2, pselect() doesn't always reject bad fds. AC_CACHE_CHECK([whether pselect detects invalid fds], [gl_cv_func_pselect_detects_ebadf], [ AC_RUN_IFELSE([AC_LANG_PROGRAM([[ #include <sys/types.h> #include <sys/time.h> #if HAVE_SYS_SELECT_H # include <sys/select.h> #endif #include <unistd.h> #include <errno.h> ]],[[ fd_set set; dup2(0, 16); FD_ZERO(&set); FD_SET(16, &set); close(16); struct timespec timeout; timeout.tv_sec = 0; timeout.tv_nsec = 5000; return pselect (17, &set, NULL, NULL, &timeout, NULL) != -1 || errno != EBADF; ]])], [gl_cv_func_pselect_detects_ebadf=yes], [gl_cv_func_pselect_detects_ebadf=no], [ case "$host_os" in # Guess yes on glibc systems. *-gnu*) gl_cv_func_pselect_detects_ebadf="guessing yes" ;; # If we don't know, assume the worst. *) gl_cv_func_pselect_detects_ebadf="guessing no" ;; esac ]) ]) case $gl_cv_func_pselect_detects_ebadf in *yes) ;; *) REPLACE_PSELECT=1 ;; esac fi if test $ac_cv_func_pselect = no || test $gl_cv_sig_pselect = no; then REPLACE_PSELECT=1 fi ])