[emerillon-plugins] Don't build plugin if vala compiler isn't found

[Łukasz Jernaś <ljernas src gnome org>]

commit 1118dc2e922b41561f3aa26138cbdd59388295c6
Author: Å?ukasz JernaÅ? <deejay1 srem org>
Date:   Mon Apr 26 07:43:09 2010 +0200

    Don't build plugin if vala compiler isn't found

 configure.ac |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 8f2f206..d234e56 100644
--- a/configure.ac
+++ b/configure.ac
@@ -310,7 +310,8 @@ plugin_defined image-export
 if test "$?" = 1
 then
   AM_PROG_VALAC([0.8.2])
-
+  if test "$VALAC" != ""
+  then
   PKG_CHECK_MODULES(IMAGEEXPORT,
 		[
 			gconf-2.0 >= 2.0
@@ -323,6 +324,9 @@ then
 	then
 		undef_plugin image-export "Image export plugin dependencies not satisfied."
 	fi
+  else
+	undef_plugin image-export "Vala compiler not found."
+  fi
 fi
 
 if test -z "$disabled_plugins"