Wow is make stupid.  (Ahem, full of "magic, implicit rules".  Which are stupid.)
The directory scripts/test is not related to the script scripts/test.sh.  If
the shell script is newer than the directory, IT DOESN'T MATTER.
diff --git a/Makefile b/Makefile
index 1139ae4..0ed833c 100644
--- a/Makefile
+++ b/Makefile
@@ -7,7 +7,7 @@
 	scripts/make.sh
 
 .PHONY: clean distclean baseline bloatcheck install install_flat \
-	uinstall uninstall_flat test tests help
+	uinstall uninstall_flat test tests help scripts/test
 
 include kconfig/Makefile