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

Makefile.src.in

@@ -256,9 +256,9 @@ ifeq ($(OS), PSP)
 	# Because of a bug in the PSP GCC tools, linking via CXX results
 	#  in total chaos and more problems then you can handle. So we need
 	#  CC to link OpenTTD for PSP
-	$(Q)$(CC_HOST) $(LDFLAGS) $(OBJS) $(LIBS) -o $@
+	$(Q)+$(CC_HOST) $(LDFLAGS) $(OBJS) $(LIBS) -o $@
 else
-	$(Q)$(CXX_HOST) $(LDFLAGS) $(OBJS) $(LIBS) -o $@
+	$(Q)+$(CXX_HOST) $(LDFLAGS) $(OBJS) $(LIBS) -o $@
 endif
 ifdef STRIP
 	$(Q)$(STRIP) $@

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