To generate the icon cache files.
We want to avoid a dependency loop if possible; additionally, on some
Debian-based systems gtk-update-icon-cache maps to the GTK2 version of
the utility and the GTK3 version is renamed to
gtk-update-icon-cache-3.0.
To avoid a build dependency on GTK2, use the binary that we just built
in-tree.
https://bugzilla.gnome.org/show_bug.cgi?id=749593
dist_appsicon48_DATA = data/48x48/gtk3-demo.png data/48x48/gtk3-demo-symbolic.symbolic.png
dist_appsicon256_DATA = data/256x256/gtk3-demo.png data/256x256/gtk3-demo-symbolic.symbolic.png
-update_icon_cache = gtk-update-icon-cache --ignore-theme-index --force
+update_icon_cache = $(top_builddir)/gtk/gtk-update-icon-cache --ignore-theme-index --force
install-data-hook: install-update-icon-cache
uninstall-hook: uninstall-update-icon-cache
dist_appsicon48_DATA = data/48x48/gtk3-widget-factory.png data/48x48/gtk3-widget-factory-symbolic.symbolic.png
dist_appsicon256_DATA = data/256x256/gtk3-widget-factory.png data/256x256/gtk3-widget-factory-symbolic.symbolic.png
-update_icon_cache = gtk-update-icon-cache --ignore-theme-index --force
+update_icon_cache = $(top_builddir)/gtk/gtk-update-icon-cache --ignore-theme-index --force
install-data-hook: install-update-icon-cache
uninstall-hook: uninstall-update-icon-cache