2 dnl Copyright (C) 2002 Free Software Foundation, Inc.
3 dnl This file is free software, distributed under the terms of the GNU
4 dnl General Public License. As a special exception to the GNU General
5 dnl Public License, this file may be distributed as part of a program
6 dnl that contains a configuration script generated by Autoconf, under
7 dnl the same distribution terms as the rest of that program.
9 AC_DEFUN([gl_FUNC_DUP2],
11 AC_REPLACE_FUNCS(dup2)
12 if test $ac_cv_func_dup2 = no; then
17 # Prerequisites of lib/dup2.c.
18 AC_DEFUN([gl_PREREQ_DUP2], [
19 AC_CHECK_HEADERS_ONCE(fcntl.h unistd.h)