Author	SHA1	Message	Date
Jan Lindemann	c42f5f98ab	test-guard.mk: Add file ... Running "make clean" in some directories can break "make test" in others. That notably happens by running clean somewhere in or below $(TOPDIR)/src/python, which removes __init__.py files potentially needed by unit and integration tests in $(TOPDIR)/test. This commit makes the failure easily visible by introducing the notion of "testabiltity" - if the tree is not testable, "make test" logs exactly that in a clear error message and gives up. Makefiles which need to check "testability" can use it as a prerequisite. This commit does that with py-run.mk and jw-py-test.mk. Testability is asserted by running "make", "make all" or "make test" from $(TOPDIR). A successful toplevel build coincides with testability, and leaves a $(TOPDIR)/dirs-all.done behind, which is why that file is the perfect testability marker. It is automatically created by a toplevel build and cleared by using the "invalidate-testability" prerequisite. This commit makes target "clean" depend on it in py-mod.mk. To be extended to other use cases / makefile snippets as needed. Signed-off-by: Jan Lindemann <jan@janware.com>	2026-08-18 14:05:30 +02:00