this patch fixes toolchain parallel build, which reduces build time.

In order to enable parallel build, change line 21 of
include/host-build.mk from:

override MAKEFLAGS=

to:

override MAKEFLAGS=$(MAKE_JOBS)

-Raphael

SVN-Revision: 19995

include/host-build.mk

@@ -1,5 +1,5 @@
 #
-# Copyright (C) 2006-2009 OpenWrt.org
+# Copyright (C) 2006-2010 OpenWrt.org
 #
 # This is free software, licensed under the GNU General Public License v2.
 # See /LICENSE for more information.
@@ -80,7 +80,7 @@ define Host/Compile
 endef
 
 define Host/Install/Default
-	$(MAKE) -C $(HOST_BUILD_DIR) install
+	$(_SINGLE)$(MAKE) -C $(HOST_BUILD_DIR) install
 endef
 
 define Host/Install

toolchain/gcc/Makefile

@@ -250,7 +250,7 @@ define SetupExtraArch
 endef
 
 define Stage2/Install
-	$(GCC_MAKE) -C $(HOST_BUILD_DIR2) install
+	$(_SINGLE)$(GCC_MAKE) -C $(HOST_BUILD_DIR2) install
 	# Set up the symlinks to enable lying about target name.
 	set -e; \
 	(cd $(TOOLCHAIN_DIR)/usr; \