[gtk-vnc] Disable VAPI generation for gtk+ 2.0

[Zeeshan Ali Khattak <zeeshanak src gnome org>]

commit 2043197b77ed8fd5833620f858884e0a3e1bc8ba
Author: Zeeshan Ali (Khattak) <zeeshanak gnome org>
Date:   Fri Oct 28 17:57:59 2011 +0300

    Disable VAPI generation for gtk+ 2.0
    
    Disable vala checks and binding generation by default when building
    against gtk 2.0.

 configure.ac |    8 +++++++-
 1 files changed, 7 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 3e9221d..d072173 100644
--- a/configure.ac
+++ b/configure.ac
@@ -402,9 +402,15 @@ fi
 AM_CONDITIONAL([WITH_GOBJECT_INTROSPECTION], [test "x$enable_introspection" = "xyes"])
 AM_CONDITIONAL([G_IR_SCANNER_SYMBOL_PREFIX], [test "x$has_symbol_prefix" = "xyes"])
 
+if test "x$with_gtk" = "x3.0"; then
+        default_vala=check
+else
+        default_vala=no
+fi
+
 AC_ARG_ENABLE([vala],
               AS_HELP_STRING([--enable-vala], [enable Vala binding generation]),
-              [], [enable_vala=check])
+              [], [enable_vala="$default_vala"])
 if test "x$enable_introspection" = "xyes" ; then
         if test "x$enable_vala" != "xno" ; then
                 AC_PATH_PROG(VAPIGEN, vapigen, no)