From: Ilia Alshanetsky <iliaa@php.net>
Date: Mon, 11 Nov 2002 16:12:56 +0000 (+0000)
Subject: Added a flex version check. In the event required flex version is not
X-Git-Tag: php-4.3.0RC1~112
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=a4e7793e51e11e6a382a72866d92f4edca5c857c;p=php

Added a flex version check. In the event required flex version is not
available, an advisory warning (similar to bison one) will be given to the
user. This is needed for systems such as Sun OS, where the existing lex
parser cannot be used to regenerate Zend/PHP lexical parsers.
---

diff --git a/configure.in b/configure.in
index 73dc78888f..b93005648e 100644
--- a/configure.in
+++ b/configure.in
@@ -158,6 +158,12 @@ if test "$ac_cv_c_const" = "yes" ; then
   LEX_CFLAGS="-DYY_USE_CONST"
 fi
 
+AC_MSG_CHECKING([flex version])
+set `$LEX -V | grep 'version' | cut -d ' ' -f 3 | sed -e 's/\./ /g' | sed -e 's/[^0-9 ]//g'`
+if test "${1}" != "2" -o "${2}" != "5" -o "${3}" -lt "4"; then
+	 AC_MSG_WARN(You will need flex 2.5.4 or later if you want to regenerate Zend/PHP lexical parsers.)
+fi
+AC_MSG_RESULT(${1}.${2}.${3} (ok))
 
 dnl Platform-specific compile settings.
 dnl -------------------------------------------------------------------------