libgtk2: add option to install the gtk-demo program

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/libgtk2/Config.in

@@ -16,5 +16,12 @@ config BR2_PACKAGE_LIBGTK2
 
 	  http://www.gtk.org/
 
+config BR2_PACKAGE_LIBGTK2_DEMO
+	bool "Install libgtk2 demo program"
+	depends on BR2_PACKAGE_LIBGTK2
+	help
+	  The GTK+ source base contains a gtk-demo program. This
+	  option allows to install this program to the target.
+
 comment "libgtk2 requires a toolchain with WCHAR and C++ support"
 	depends on !BR2_USE_WCHAR || !BR2_INSTALL_LIBSTDCPP

package/libgtk2/libgtk2.mk

@@ -114,11 +114,13 @@ else
 LIBGTK2_CONF_OPT += --disable-cups
 endif
 
+ifeq ($(BR2_PACKAGE_LIBGTK2_DEMO),)
 define LIBGTK2_POST_INSTALL_TWEAKS
 	rm -rf $(TARGET_DIR)/usr/share/gtk-2.0/demo $(TARGET_DIR)/usr/bin/gtk-demo
 endef
 
 LIBGTK2_POST_INSTALL_TARGET_HOOKS += LIBGTK2_POST_INSTALL_TWEAKS
+endif
 
 # We do not build a full version of libgtk2 for the host, because that
 # requires compiling Cairo, Pango, ATK and X.org for the