1# -*- Autoconf -*-
2# Checks required to run `subpipe'.
3#
4# Copyright (C) 2002, 2003, 2005 Free Software Foundation, Inc.
5#
6# This program is free software; you can redistribute it and/or modify
7# it under the terms of the GNU General Public License as published by
8# the Free Software Foundation; either version 2 of the License, or
9# (at your option) any later version.
10#
11# This program is distributed in the hope that it will be useful,
12# but WITHOUT ANY WARRANTY; without even the implied warranty of
13# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14# GNU General Public License for more details.
15#
16# You should have received a copy of the GNU General Public License
17# along with this program; if not, write to the Free Software
18# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
19# 02110-1301  USA
20
21# Written by Paul Eggert <eggert@twinsun.com>.
22
23AC_DEFUN([BISON_PREREQ_SUBPIPE],
24[
25 AC_TYPE_PID_T
26 AC_HEADER_SYS_WAIT
27 AC_CHECK_FUNCS(dup2 waitpid)
28 AC_FUNC_FORK
29])
30