[gnome-builder] build: check for libappstream-glib-devel during autogen

[Christian Hergert <chergert src gnome org>]

commit 382678d52d03cfed06040afde104b7a7c4bed5e3
Author: Christian Hergert <christian hergert me>
Date:   Wed Dec 31 21:46:21 2014 -0800

    build: check for libappstream-glib-devel during autogen
    
    We need this to check for APPSTREAM_XML. We'll just put this in
    autogen.sh so it get's checked before generating bad configure/makefiles.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=742155

 autogen.sh |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/autogen.sh b/autogen.sh
index a3262f9..44ac5ea 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -22,6 +22,12 @@ if test -z "${AUTORECONF}"; then
     exit 1
 fi
 
+# Check for libappstream-glib-devel so we don't get APPSTREAM_XML_RULES failures.
+if ! pkg-config appstream-glib; then
+    echo "*** libappstream-glib-devel not found, please install it."
+    exit 1
+fi
+
 # Generate m4 sub-configure scripts for inclusion by configure.ac.
 for group in ac am config lt output print; do
     for mode in pre post; do