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| 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 3 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, see <http://www.gnu.org/licenses/>. |
| 18 |
| 19 # Written by Paul Eggert <eggert@twinsun.com>. |
| 20 |
| 21 AC_DEFUN([BISON_PREREQ_SUBPIPE], |
| 22 [ |
| 23 AC_TYPE_PID_T |
| 24 AC_HEADER_SYS_WAIT |
| 25 AC_CHECK_FUNCS(dup2 waitpid) |
| 26 AC_FUNC_FORK |
| 27 ]) |
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