From d2af65efaaea156b7bf2b5c6f319f8ee92d991b8 Mon Sep 17 00:00:00 2001
From: Diego Nieto Cid <dnietoc@gmail.com>
Date: Mon, 11 Apr 2011 15:51:23 -0300
Subject: Disable XKB when either lex or yacc is missing.

---
 configure.in | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/configure.in b/configure.in
index 967e86c9..18216540 100644
--- a/configure.in
+++ b/configure.in
@@ -230,6 +230,12 @@ AC_MSG_RESULT($boot_store_types)
 # Check for ncursesw, which is needed for the console-curses client.
 hurd_LIB_NCURSESW
 
+AC_PROG_LEX
+AC_PROG_YACC
+AS_IF([test "$LEX" = ":" -o "$YACC" = ":"], [
+have_x11=no
+AC_MSG_WARN([lex or yacc is mising, XKB will be disabled.])
+],[
 # Check for those Xorg modules needed for keyboard mappings.
 PKG_CHECK_MODULES([X11], [x11 xproto],
   [ have_x11=yes
@@ -242,6 +248,7 @@ PKG_CHECK_MODULES([X11], [x11 xproto],
       [XKB_BASE="$datadir/X11/xkb"
        AC_MSG_RESULT([(default) $XKB_BASE])])
   ], [have_x11=no])
+])
 AC_SUBST([have_x11])
 AC_SUBST([XKB_BASE])
 
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