[gnome-clocks] build: Note we don't support srcdir != builddir

[Colin Walters <walters src gnome org>]

commit 38001f4f0d9bd569ab4aec2714bf097a24193ef3
Author: Colin Walters <walters verbum org>
Date:   Wed Mar 20 18:34:16 2013 -0400

    build: Note we don't support srcdir != builddir
    
    See https://bugzilla.gnome.org/show_bug.cgi?id=694153

 configure.ac |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index b6e4621..56babc4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -5,6 +5,10 @@ AC_INIT([gnome-clocks],
         [http://bugzilla.gnome.org/enter_bug.cgi?product=gnome-clocks],
         [gnome-clocks])
 
+dnl http://people.gnome.org/~walters/docs/build-api.txt
+dnl We don't support separate builddir when building from git
+echo \#buildapi-variable-no-builddir >/dev/null
+
 AC_CONFIG_MACRO_DIR([m4])
 AC_CONFIG_HEADERS(config.h)
 AC_CONFIG_SRCDIR(src/main.vala)