From 26082e79af64550d16fb1e314a904456b90a464e Mon Sep 17 00:00:00 2001
From: Thomas Petazzoni
Date: Sun, 20 Jun 2010 15:08:15 +0200
Subject: Introduce support for host config cache

We now have for quite some time a configuration cache used to speed-up
the execution of ./configure scripts when compiling programs for the
target. This commit introduces a similar concept when Buildroot
compiles programs for the host.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
---
 Makefile | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

(limited to 'Makefile')

diff --git a/Makefile b/Makefile
index df276c11b..d6bcb36f0 100644
--- a/Makefile
+++ b/Makefile
@@ -441,12 +441,12 @@ show-targets:
 	@echo $(TARGETS)
 
 ifeq ($(BR2_CONFIG_CACHE),y)
-# drop configure cache if configuration is changed
-$(BUILD_DIR)/tgt-config.cache: $(CONFIG_DIR)/.config
+# drop configure caches if configuration is changed
+$(BUILD_DIR)/tgt-config.cache $(BUILD_DIR)/host-config.cache: $(CONFIG_DIR)/.config
 	rm -f $@
 	touch $@
 
-$(BASE_TARGETS): | $(BUILD_DIR)/tgt-config.cache
+$(BASE_TARGETS): | $(BUILD_DIR)/tgt-config.cache $(BUILD_DIR)/host-config.cache
 endif
 
 else # ifeq ($(BR2_HAVE_DOT_CONFIG),y)
@@ -580,7 +580,7 @@ endif
 	rm -rf $(CONFIG_DIR)/.config $(CONFIG_DIR)/.config.old $(CONFIG_DIR)/.config.cmd $(CONFIG_DIR)/.auto.deps
 
 flush:
-	rm -f $(BUILD_DIR)/tgt-config.cache
+	rm -f $(BUILD_DIR)/tgt-config.cache $(BUILD_DIR)/host-config.cache
 
 %_defconfig: $(TOPDIR)/configs/%_defconfig
 	cp $^ $(CONFIG_DIR)/.config
-- 
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