2 # Checks required to run `subpipe'.
4 # Copyright (C) 2002 Free Software Foundation, Inc.
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.
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.
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., 59 Temple Place, Suite 330, Boston, MA
21 # Written by Paul Eggert <eggert@twinsun.com>.
23 AC_DEFUN([BISON_PREREQ_SUBPIPE],
26 AC_CHECK_HEADERS([fcntl.h sys/wait.h])
28 AC_CHECK_FUNCS(dup2 waitpid)