From 2d92746975e9917f3f9098c415ede47878cc861f Mon Sep 17 00:00:00 2001
From: Pasi Kallinen <paxed@alt.org>
Date: Wed, 21 Oct 2009 15:03:56 +0000
Subject: [PATCH] Abort configure if lex or flex cannot be found.

git-svn-id: svn://katsu.triplehelix.org/dgamelaunch/trunk@513 db0b04b0-f4d1-0310-9a6d-de3e77497b0e
---
 configure.ac | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/configure.ac b/configure.ac
index b69abe1..0358165 100644
--- a/configure.ac
+++ b/configure.ac
@@ -9,7 +9,11 @@ AC_CONFIG_HEADER(config.h)
 
 AC_PROG_CC(cc gcc)
 AC_STDC_HEADERS
+
 AC_PROG_LEX
+if test "x$LEX" != xflex; then
+   AC_MSG_ERROR([lex or flex not found.])
+fi
 
 LIBS="$LIBS $LEXLIB"