[gnome-hello] build-sys: fix make distcheck

[Marc-Andre Lureau <malureau src gnome org>]

commit cdc1e4293125db5330eba6c79b417036aba7903f
Author: Marc-André Lureau <marcandre lureau gmail com>
Date:   Mon Dec 22 16:19:20 2014 +0100

    build-sys: fix make distcheck
    
    Update icon-theme.cache on uninstall, based on gtk-demo Makefile.am

 pixmaps/Makefile.am |   28 ++++++++++++++++------------
 1 files changed, 16 insertions(+), 12 deletions(-)
---
diff --git a/pixmaps/Makefile.am b/pixmaps/Makefile.am
index 49761e0..5a1e04c 100644
--- a/pixmaps/Makefile.am
+++ b/pixmaps/Makefile.am
@@ -1,18 +1,22 @@
-icondir = $(datadir)/icons/hicolor/48x48/apps
+iconthemedir = $(datadir)/icons/hicolor
+
+icondir = $(iconthemedir)/48x48/apps
 icon_DATA = gnome-hello-logo.png
 
-gtk_update_icon_cache = gtk-update-icon-cache -f -t $(datadir)/icons/hicolor
+update_icon_cache = gtk-update-icon-cache --ignore-theme-index --force
+
+install-data-hook: install-update-icon-cache
+uninstall-hook: uninstall-update-icon-cache
+
+install-update-icon-cache:
+       $(AM_V_at)$(POST_INSTALL)
+       test -n "$(DESTDIR)" || $(update_icon_cache) "$(iconthemedir)"
+
+uninstall-update-icon-cache:
+       $(AM_V_at)$(POST_UNINSTALL)
+       test -n "$(DESTDIR)" || $(update_icon_cache) "$(iconthemedir)"
 
-install-data-hook:
-       @-if test -z "$(DESTDIR)"; then \
-               echo "Updating Gtk icon cache."; \
-               $(gtk_update_icon_cache); \
-       else \
-               echo "*** Icon cache not updated.  After install, run this:"; \
-               echo "***   $(gtk_update_icon_cache)"; \
-       fi
 
-EXTRA_DIST = \
-       $(icon_DATA)
+EXTRA_DIST = $(icon_DATA)
 
 -include $(top_srcdir)/git.mk