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 (a] twinsun.com>. 22 23 AC_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
