update makefile

equiv/Makefile

 PYTHON_EXECUTABLE := $(shell if python3 -c ""; then echo "python3"; else echo "python"; fi)
 
-all:: run-test.mk
-	@touch .stamp
-	@$(MAKE) -f run-test.mk 
-clean:: run-test.mk
-	@rm -f .stamp
-	@$(MAKE) -f run-test.mk clean
+all::
 
 run-test.mk: ../generate.py
 	@$(PYTHON_EXECUTABLE) ../generate.py > run-test.mk
 
+include run-test.mk
+
 .PHONY: all clean