--- glib-2.40.0-r1.ebuild.orig	2014-09-15 12:31:06.000000000 +0400
+++ glib-2.40.0-r1.ebuild	2014-09-19 16:09:44.538614560 +0400
@@ -64,6 +64,10 @@
 
 DOCS="AUTHORS ChangeLog* NEWS* README"
 
+MULTILIB_CHOST_TOOLS=(
+	/usr/bin/gio-querymodules
+)
+
 pkg_setup() {
 	if use kernel_linux ; then
 		CONFIG_CHECK="~INOTIFY_USER"
@@ -270,6 +274,12 @@
 }
 
 pkg_postinst() {
+	multilib_pkg_postinst() {
+		einfo "Generating GIO modules cache..."
+		${CHOST}-gio-querymodules "${EROOT}/usr/$(get_libdir)/gio/modules"
+	}
+	multilib_foreach_abi multilib_pkg_postinst
+
 	if has_version '<x11-libs/gtk+-3.0.12:3'; then
 		# To have a clear upgrade path for gtk+-3.0.x users, have to resort to
 		# a warning instead of a blocker
@@ -278,3 +288,11 @@
 		ewarn "You should upgrade to a newer version of gtk+:3 immediately."
 	fi
 }
+
+pkg_prerm() {
+	multilib_pkg_prerm() {
+		einfo "Removing GIO modules cache..."
+		rm -f "${EROOT}/usr/$(get_libdir)/gio/modules/giomodule.cache"
+	}
+	multilib_foreach_abi multilib_pkg_prerm
+}