* Makefile.in (build/config_vars.out): Rebuild if build/config_vars.sh
has changed.
@@ -133,7 +133,7 @@ install-conf:
fi
# Create a sanitized config_vars.mk
-build/config_vars.out: build/config_vars.mk
+build/config_vars.out: build/config_vars.mk build/config_vars.sh
@$(SHELL) build/config_vars.sh < build/config_vars.mk > build/config_vars.out
install-build: build/config_vars.out
