--- /usr/portage/dev-libs/glib/glib-2.34.3.ebuild	2013-04-30 16:31:09.000000000 +0200
+++ glib-2.34.3.ebuild	2013-06-03 22:19:18.000000000 +0200
@@ -137,6 +137,11 @@ src_configure() {
 
 	local myconf
 
+	case "${CHOST}" in
+		*-mingw*)	myconf="${myconf} --with-threads=win32" ;;
+		*)			myconf="${myconf} --with-threads=posix" ;;
+	esac
+
 	# Building with --disable-debug highly unrecommended.  It will build glib in
 	# an unusable form as it disables some commonly used API.  Please do not
 	# convert this to the use_enable form, as it results in a broken build.
@@ -164,7 +169,6 @@ src_configure() {
 		$(use_enable systemtap systemtap) \
 		--enable-man \
 		--with-pcre=internal \
-		--with-threads=posix \
 		--with-xml-catalog="${EPREFIX}/etc/xml/catalog"
 }