From fee9b7ca9b15bef9249a8efa703e858e00402c50 Mon Sep 17 00:00:00 2001
From: Bruce Momjian <bruce@momjian.us>
Date: Fri, 6 Jun 2003 19:11:55 +0000
Subject: [PATCH] Add configure warning to check for bison version >= 1.875.

---
 configure    | 13 +++++++++++++
 configure.in | 12 +++++++++++-
 2 files changed, 24 insertions(+), 1 deletion(-)

diff --git a/configure b/configure
index 73fa5e4b6c..ffc604afe8 100755
--- a/configure
+++ b/configure
@@ -4424,6 +4424,19 @@ fi
   test -n "$YACC" && break
 done
 
+
+if test "$YACC"; then
+  if bison --version | sed q | $AWK '{ if ($4 < 1.875) exit 0; else exit 1;}'; then
+    { echo "$as_me:$LINENO: WARNING:
+*** The installed version of Bison is too old.  PostgreSQL needs
+*** Bison version 1.875 or later." >&5
+echo "$as_me: WARNING:
+*** The installed version of Bison is too old.  PostgreSQL needs
+*** Bison version 1.875 or later." >&2;}
+    unset YACC
+  fi
+fi
+
 if test -z "$YACC"; then
   { echo "$as_me:$LINENO: WARNING:
 *** Without Bison you will not be able to build PostgreSQL from CVS or
diff --git a/configure.in b/configure.in
index aece9bd6c7..07a8db4920 100644
--- a/configure.in
+++ b/configure.in
@@ -1,5 +1,5 @@
 dnl Process this file with autoconf to produce a configure script.
-dnl $Header: /cvsroot/pgsql/configure.in,v 1.254 2003/05/27 16:36:50 momjian Exp $
+dnl $Header: /cvsroot/pgsql/configure.in,v 1.255 2003/06/06 19:11:55 momjian Exp $
 dnl
 dnl Developers, please strive to achieve this order:
 dnl
@@ -585,6 +585,16 @@ AC_PATH_PROG(TAR, tar)
 PGAC_CHECK_STRIP
 
 AC_CHECK_PROGS(YACC, ['bison -y'])
+
+if test "$YACC"; then
+  if bison --version | sed q | $AWK '{ if ($4 < 1.875) exit 0; else exit 1;}'; then
+    AC_MSG_WARN([
+*** The installed version of Bison is too old.  PostgreSQL needs
+*** Bison version 1.875 or later.])
+    unset YACC
+  fi
+fi
+
 if test -z "$YACC"; then
   AC_MSG_WARN([
 *** Without Bison you will not be able to build PostgreSQL from CVS or
-- 
2.11.0