From: Peter Korsgaard <jacmet@sunsite.dk>
Date: Sat, 12 Dec 2009 07:48:53 +0000 (+0100)
Subject: Makefile: document configure cache handling
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=97c996d6548b1d73bebedb25cee23c2137cb6348;p=buildroot.git

Makefile: document configure cache handling

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
---

diff --git a/Makefile b/Makefile
index f8303e1376..bf04773d26 100644
--- a/Makefile
+++ b/Makefile
@@ -441,6 +441,7 @@ external-deps:
 		SPIDER=--spider source
 
 ifeq ($(BR2_CONFIG_CACHE),y)
+# drop configure cache if configuration is changed
 $(BUILD_DIR)/tgt-config.cache: .config
 	rm -f $@
 	touch $@