Index: giflib-4.1.6-r2.ebuild
===================================================================
RCS file: /var/cvsroot/gentoo-x86/media-libs/giflib/giflib-4.1.6-r2.ebuild,v
retrieving revision 1.3
diff -u -B -r1.3 giflib-4.1.6-r2.ebuild
--- giflib-4.1.6-r2.ebuild      6 Jul 2013 04:28:59 -0000       1.3
+++ giflib-4.1.6-r2.ebuild      21 Sep 2013 14:48:18 -0000
@@ -41,6 +41,11 @@
                myconf="${myconf} --disable-rle"
        fi

+       if use X; then
+               myconf="${myconf} --x-includes=${EPREFIX}/usr/include \
+                       --x-libraries=${EPREFIX}/usr/$(get_libdir)"
+       fi
+
        econf \
                --disable-gl \
                $(use_enable static-libs static) \