[libsecret] Require valac in order to 'make distcheck'

[Stefan Walter <stefw src gnome org>]

commit 6d4cf7c435bd2a67e94a17ff75682f00494069b2
Author: Stef Walter <stefw gnome org>
Date:   Mon Aug 6 22:13:07 2012 +0200

    Require valac in order to 'make distcheck'
    
     * Otherwise problems with vala files not being distributed
    
    https://bugzilla.gnome.org/show_bug.cgi?id=681330

 Makefile.am |   14 +++++++++++++-
 1 files changed, 13 insertions(+), 1 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index 2bdd1e0..6e4ef57 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -10,7 +10,8 @@ DISTCHECK_CONFIGURE_FLAGS = \
 	--disable-coverage \
 	--enable-strict \
 	--disable-silent-rules \
-	--enable-gtk-doc
+	--enable-gtk-doc \
+	--enable-vala
 
 EXTRA_DIST = \
 	COPYING.TESTS
@@ -40,3 +41,14 @@ upload-release: $(DIST_ARCHIVES)
 
 upload-docs:
 	rsync -Hvax docs/reference/libsecret/html/./ master.gnome.org:public_html/libsecret-docs/
+
+if HAVE_VALAC
+dist-check-valac:
+
+else
+dist-check-valac:
+	@echo "*** valac must be installed and enabled in order to make dist"
+	@false
+endif
+
+dist-hook: dist-check-valac