optimize the .config dependency chain in the toplevel makefile

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@14740 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/include/toplevel.mk b/include/toplevel.mk
index 7f5308f..9dfc9df 100644 (file)
--- a/include/toplevel.mk
+++ b/include/toplevel.mk
@@ -49,7 +49,7 @@ prepare-tmpinfo: FORCE
        ./scripts/metadata.pl package_mk tmp/.packageinfo > tmp/.packagedeps || { rm -f tmp/.packagedeps; false; }
        touch $(TOPDIR)/tmp/.build
 
-.config: ./scripts/config/conf prepare-tmpinfo $(if $(CONFIG_HAVE_DOT_CONFIG),,FORCE)
+.config: ./scripts/config/conf $(if $(CONFIG_HAVE_DOT_CONFIG),,prepare-tmpinfo)
        @+if [ \! -e .config ] || ! grep CONFIG_HAVE_DOT_CONFIG .config >/dev/null; then \
                [ -e $(HOME)/.openwrt/defconfig ] && cp $(HOME)/.openwrt/defconfig .config; \
                $(_SINGLE)$(NO_TRACE_MAKE) menuconfig $(PREP_MK); \
@@ -106,7 +106,7 @@ download: .config FORCE
 clean dirclean: .config
        @+$(SUBMAKE) -r $@ 
 
-prereq:: .config
+prereq:: prepare-tmpinfo .config
        @+$(MAKE) -r -s tmp/.prereq-build $(PREP_MK)
        @+$(NO_TRACE_MAKE) -r -s $@