--- /usr/portage/sci-calculators/galculator/galculator-2.1.4.ebuild	2015-11-11 03:31:01.000000000 -0500
+++ /usr/portage/sci-calculators/galculator/galculator-2.1.4.ebuild	2015-11-17 05:29:24.000000000 -0500
@@ -14,18 +14,25 @@ 
 LICENSE="GPL-2+"
 SLOT="0"
 KEYWORDS="~alpha amd64 ~arm ~ppc x86 ~x86-fbsd ~x86-freebsd ~amd64-linux ~x86-linux ~ppc-macos"
-IUSE=""
+IUSE="+gtk3"
 
-RDEPEND="
-	dev-libs/glib:2
-	x11-libs/gtk+:3
-	x11-libs/pango
-"
+RDEPEND="dev-libs/glib:2
+	gtk3? ( x11-libs/gtk+:3 )
+	!gtk3? ( x11-libs/gtk+:2 )
+	x11-libs/pango"
 DEPEND="${RDEPEND}
 	dev-util/intltool
 	sys-devel/flex
 	sys-devel/gettext
-	virtual/pkgconfig
-"
+	virtual/pkgconfig"
 
 DOCS="AUTHORS ChangeLog NEWS README THANKS doc/shortcuts"
+
+src_prepare() {
+	echo "src/flex_parser.c" >> "${S}/po/POTFILES.skip"
+}
+
+src_configure() {
+	G2CONF="${G2CONF} $(use_enable gtk3)"
+	gnome2_src_configure
+}