# -*- Autoconf -*- # Checks required to run `subpipe'. # # Copyright (C) 2002-2003, 2005, 2009-2011 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 3 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, see . # Written by Paul Eggert . AC_DEFUN([BISON_PREREQ_SUBPIPE], [ AC_TYPE_PID_T AC_HEADER_SYS_WAIT AC_CHECK_FUNCS(dup2 waitpid) AC_FUNC_FORK ])