Mesa (master): ax_prog_flex.m4: change grep syntax to accept e.g. flex.real

[Matt Turner]

Module: Mesa
Branch: master
Commit: a48be954ceb250b98fb6ee46d82653532d4e4f2f
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=a48be954ceb250b98fb6ee46d82653532d4e4f2f

Author: Andreas Oberritter <obi at saftware.de>
Date:   Mon Apr 15 22:46:06 2013 +0200

ax_prog_flex.m4: change grep syntax to accept e.g. flex.real

This is required in case a wrapper or symlink is used. This patch
has also been sent upstream, awaiting moderation.

Reviewed-by: Matt Turner <mattst88 at gmail.com>
Signed-off-by: Andreas Oberritter <obi at saftware.de>

---

 m4/ax_prog_flex.m4 |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/m4/ax_prog_flex.m4 b/m4/ax_prog_flex.m4
index 117f8fe..82fbc30 100644
--- a/m4/ax_prog_flex.m4
+++ b/m4/ax_prog_flex.m4
@@ -53,7 +53,7 @@ AC_DEFUN([AX_PROG_FLEX], [
   AC_REQUIRE([AC_PROG_EGREP])
 
   AC_CACHE_CHECK([if flex is the lexer generator],[ax_cv_prog_flex],[
-    AS_IF([$LEX --version 2>/dev/null | $EGREP -q '^flex '],
+    AS_IF([$LEX --version 2>/dev/null | $EGREP -q '^\<flex\>'],
       [ax_cv_prog_flex=yes], [ax_cv_prog_flex=no])
   ])
   AS_IF([test "$ax_cv_prog_flex" = "yes"],