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-rw-r--r--Makefile1
1 files changed, 1 insertions, 0 deletions
diff --git a/Makefile b/Makefile
index f8303e137..bf04773d2 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 $@