Stefan Fiedler:

package/base/gcc/gcc.conf

@@ -264,10 +264,17 @@ custmain() {
 	# Regenerate the file with -dumpspecs.
 	#
 	cd $builddir/inst_bin
-	for x in gcc ${pkg_gcc_target}-gcc ; do
-		[ -f "$x" -a "${pkg_gcc_version:0:1}" -ge "4" ] && \
-			./$x -dumpspecs > $root/$prefix/lib/$gcc_lib_dir/specs
-	done
+	if [ "${pkg_gcc_version:0:1}" -ge "4" ]; then
+		if [ "$ROCKCFG_CROSSBUILD" == 1 ]; then
+			$root/ROCK/tools.cross/crosscc/${pkg_gcc_target}-gcc -dumpspecs > \
+				$root/${prefix}/lib/${gcc_lib_dir}/specs
+		else
+			for x in gcc ${pkg_gcc_target}-gcc ; do
+				[ -f "${x}" ] && ./${x} -dumpspecs > \
+					$root/${prefix}/lib/${gcc_lib_dir}/specs
+			done
+		fi
+	fi
 
 	# Rename and install binaries
 	#