diff -u imlib2.bak/Makefile imlib2/Makefile
--- imlib2.bak/Makefile	2011-05-14 21:11:42.000000000 +0200
+++ imlib2/Makefile	2011-05-14 21:47:44.000000000 +0200
@@ -77,11 +77,16 @@
 .endif
 
 .if !defined(WITHOUT_GIF)
-LIB_DEPENDS+=	ungif.5:${PORTSDIR}/graphics/libungif
-PLIST_SUB+=	GIF=""
+. if exists(${LOCALBASE}/lib/libgif.so)
+LIB_DEPENDS+=   gif.5:${PORTSDIR}/graphics/giflib
+PLIST_SUB+=     GIF=""
+. else
+LIB_DEPENDS+=   ungif.5:${PORTSDIR}/graphics/libungif
+PLIST_SUB+=     GIF=""
+. endif
 .else
-CONFIGURE_ARGS+=	--without-gif
-PLIST_SUB+=	GIF="@comment "
+CONFIGURE_ARGS+=        --without-gif
+PLIST_SUB+=     GIF="@comment "
 .endif
 
 .if !defined(WITHOUT_ID3)
Common subdirectories: imlib2.bak/files and imlib2/files