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