(svn r21662) -Codechange: use -flto=jobserver for GCC 4.6, it makes linking with LTO use number of processes passed to make -j

config.lib

@@ -1295,7 +1295,11 @@ make_compiler_cflags() {
 			has_lto=`$1 -dumpspecs | grep '\%{flto'`
 			if [ -n "$has_lto" ]; then
 				# Use LTO only if we see LTO exists and is requested
-				flags="$flags -flto"
+				if [ $cc_version -lt 46 ]; then
+					flags="$flags -flto"
+				else
+					flags="$flags -flto=jobserver"
+				fi
 				ldflags="$ldflags -fwhole-program"
 				features="$features lto"
 			fi