[polari] build: Use appstream-glib's m4 macro

[Florian Müllner <fmuellner src gnome org>]

commit e757442517b96224913d57c8aba6d657562210c2
Author: Florian Müllner <fmuellner gnome org>
Date:   Thu Nov 27 12:55:40 2014 +0000

    build: Use appstream-glib's m4 macro
    
    appdata-validate which we (optionally) use is deprecated, rather
    than using the new appstream-util tool, port to the m4 macros.

 configure.ac             |    3 ++-
 data/appdata/Makefile.am |   15 +++++----------
 2 files changed, 7 insertions(+), 11 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index c3b9126..af9e3bd 100644
--- a/configure.ac
+++ b/configure.ac
@@ -36,7 +36,8 @@ GLIB_COMPILE_RESOURCES=`$PKG_CONFIG --variable=glib_compile_resources gio-2.0`
 AC_SUBST(GLIB_COMPILE_RESOURCES)
 
 AC_PATH_PROG(DESKTOP_FILE_VALIDATE, desktop-file-validate)
-AC_PATH_PROG(APPDATA_VALIDATE, appdata-validate)
+
+APPSTREAM_XML
 
 AC_CONFIG_FILES([
 Makefile
diff --git a/data/appdata/Makefile.am b/data/appdata/Makefile.am
index 6d8a9a6..bd719f7 100644
--- a/data/appdata/Makefile.am
+++ b/data/appdata/Makefile.am
@@ -1,13 +1,8 @@
-appdatadir = $(datadir)/appdata
-appdata_DATA = $(appdata_in_files:.xml.in=.xml)
-appdata_in_files = org.gnome.Polari.appdata.xml.in
-
 @INTLTOOL_XML_RULE@
+ APPSTREAM_XML_RULES@
 
-check-local:
-       if test x$(APPDATA_VALIDATE) != x; then \
-               $(APPDATA_VALIDATE) $(appdata_DATA); \
-       fi
+appstream_in_files = org.gnome.Polari.appdata.xml.in
+appstream_XML = $(appstream_in_files:.xml.in=.xml)
 
-EXTRA_DIST = $(appdata_in_files)
-CLEANFILES = $(appdata_DATA)
+EXTRA_DIST = $(appstream_in_files)
+CLEANFILES = $(appstream_XML)