view m4/dup3.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 7fadcfb1189f
line wrap: on
line source

# dup3.m4 serial 4
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.

AC_DEFUN([gl_FUNC_DUP3],
[
  AC_REQUIRE([gl_UNISTD_H_DEFAULTS])

  dnl Persuade glibc <unistd.h> to declare dup3().
  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])

  AC_CHECK_FUNCS_ONCE([dup3])
  if test $ac_cv_func_dup3 != yes; then
    HAVE_DUP3=0
  fi

dnl Not needed yet, because dup3 is unconditionally replaced.
dnl  dnl Replace dup3() for supporting the gnulib-defined fchdir() function,
dnl  dnl to keep fchdir's bookkeeping up-to-date.
dnl  m4_ifdef([gl_FUNC_FCHDIR], [
dnl    gl_TEST_FCHDIR
dnl    if test $HAVE_FCHDIR = 0; then
dnl      if test $HAVE_DUP3 = 1; then
dnl        REPLACE_DUP3=1
dnl      fi
dnl    fi
dnl  ])
])