[gnome-weather] Add automake bits to install icons

[Giovanni Campagna <gcampagna src gnome org>]

commit 4cca307bd4329b4309e3be7bc62ee9060b067bb9
Author: Giovanni Campagna <gcampagna src gnome org>
Date:   Wed Jun 5 21:32:48 2013 +0200

    Add automake bits to install icons
    
    First copied from gnome-clocks, but then I noticed it looked better
    with recursive make and nobase_

 configure.ac           |    1 +
 data/Makefile.am       |    4 ++++
 data/icons/Makefile.am |   25 +++++++++++++++++++++++++
 3 files changed, 30 insertions(+), 0 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 4d29738..4a0e1dd 100644
--- a/configure.ac
+++ b/configure.ac
@@ -36,6 +36,7 @@ AC_SUBST(GLIB_COMPILE_RESOURCES)
 AC_CONFIG_FILES([
   Makefile
   data/Makefile
+  data/icons/Makefile
   libgd/Makefile
   src/Makefile
   po/Makefile.in
diff --git a/data/Makefile.am b/data/Makefile.am
index 1e429a8..c51aa40 100644
--- a/data/Makefile.am
+++ b/data/Makefile.am
@@ -1,3 +1,7 @@
+# I chose to use recursive automake so I can use nobase_ and avoid
+# 5 different directory declarations
+SUBDIRS = icons
+
 resource_files = $(shell $(GLIB_COMPILE_RESOURCES) --sourcedir=$(srcdir) --generate-dependencies 
$(srcdir)/gnome-weather.gresource.xml)
 gnome-weather.gresource: gnome-weather.gresource.xml $(resource_files)
        $(AM_V_GEN) $(GLIB_COMPILE_RESOURCES) --target=$@ --sourcedir=$(srcdir) $<
diff --git a/data/icons/Makefile.am b/data/icons/Makefile.am
new file mode 100644
index 0000000..00460c3
--- /dev/null
+++ b/data/icons/Makefile.am
@@ -0,0 +1,25 @@
+icondir = $(datadir)/icons/
+
+# I'd like to use nobase_dist_icon_DATA, but
+# automake doesn't recognizes two prefixes at once
+nobase_icon_DATA = \
+       hicolor/16x16/apps/gnome-weather.png \
+       hicolor/22x22/apps/gnome-weather.png \
+       hicolor/32x32/apps/gnome-weather.png \
+       hicolor/48x48/apps/gnome-weather.png \
+       hicolor/256x256/apps/gnome-weather.png
+
+EXTRA_DIST = $(nobase_icon_DATA) hicolor/gnome-weather.svg
+
+gtk_update_icon_cache = gtk-update-icon-cache -f -t $(datadir)/icons/hicolor; gtk-update-icon-cache -f -t 
$(datadir)/icons/HighContrast
+
+install-data-hook: update-icon-cache
+uninstall-hook: update-icon-cache
+update-icon-cache:
+       @-if test -z "$(DESTDIR)"; then \
+               echo "Updating Gtk icon cache."; \
+               $(gtk_update_icon_cache); \
+       else \
+               echo "*** Icon cache not updated.  After (un)install, run this:"; \
+               echo "***   $(gtk_update_icon_cache)"; \
+       fi