--- /usr/portage/app-arch/unrar/unrar-5.1.2.ebuild	2014-04-11 15:58:50.000000000 -0600
+++ unrar-5.1.2.ebuild	2014-04-17 14:07:18.587218507 -0600
@@ -22,10 +22,17 @@
 
 src_prepare() {
 	epatch "${FILESDIR}"/${PN}-5.0.2-build.patch
-	sed -i \
-		-e "/libunrar/s:.so:$(get_libname ${PV%.*.*}):" \
-		-e "s:-shared:& -Wl,-soname -Wl,libunrar$(get_libname ${PV%.*.*}):" \
-		makefile || die
+	if [[ ${CHOST} == *-darwin* ]] ; then
+		sed -i \
+			-e "/libunrar/s:.so:$(get_libname ${PV%.*.*}):" \
+			-e "s:-shared:-dynamiclib -install_name ${EPREFIX}/usr/lib/libunrar$(get_libname ${PV%.*.*}):" \
+			makefile || die
+	else
+		sed -i \
+			-e "/libunrar/s:.so:$(get_libname ${PV%.*.*}):" \
+			-e "s:-shared:& -Wl,-soname -Wl,libunrar$(get_libname ${PV%.*.*}):" \
+			makefile || die
+	fi
 }
 
 src_compile() {