--- /usr/portage/eclass/toolchain-funcs.eclass	2016-10-22 11:27:09.000000000 +0200
+++ /usr/portage/eclass/toolchain-funcs.eclass	2017-02-24 16:35:19.099870620 +0100
@@ -846,7 +846,12 @@ 
 		ln -sf $(which ${CHOST}-ld.bfd) "${d}"/ld
 		flags+=( -B"${d}" )
 	fi
-	output_format=$($(tc-getCC) "${flags[@]}" 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
+
+	output_format=$($(tc-getCC) "${flags[@]}" 2>&1 | sed -n '/OUTPUT_FORMAT(/ {
+		N
+		s/[\r\n]//
+		s/^OUTPUT_FORMAT(\([^)]*\)).*/\1/p
+	}')
 	[[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
 
 	for lib in "$@" ; do