X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/5b2d69cc5b852ab2e884fdf76f78d2ee6ff3ff7f..58697c6d89f2db69aa2321fe92fc388f87bf2a3c:/m4/subpipe.m4

diff --git a/m4/subpipe.m4 b/m4/subpipe.m4
index d05bd77c..cf1a92d0 100644
--- a/m4/subpipe.m4
+++ b/m4/subpipe.m4
@@ -1,11 +1,11 @@
 # -*- Autoconf -*-
 # Checks required to run `subpipe'.
 #
-# Copyright (C) 2002 Free Software Foundation, Inc.
+# Copyright (C) 2002, 2003, 2005 Free Software Foundation, Inc.
 #
-# This program is free software; you can redistribute it and/or modify
+# 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
+# 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,
@@ -14,16 +14,13 @@
 # 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., 59 Temple Place, Suite 330, Boston, MA
-# 02111-1307  USA
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 # Written by Paul Eggert <eggert@twinsun.com>.
 
 AC_DEFUN([BISON_PREREQ_SUBPIPE],
 [
  AC_TYPE_PID_T
- AC_CHECK_HEADERS([fcntl.h sys/wait.h])
  AC_HEADER_SYS_WAIT
  AC_CHECK_FUNCS(dup2 waitpid)
  AC_FUNC_FORK