Where can I find `rules.mk`, `package.mk` and `version.mk`?

[zhyantao]

When I try to make the project, I encountered the error like this:

Makefile:10: /rules.mk: No such file or directory
Makefile:24: /package.mk: No such file or directory
Makefile:25: /version.mk: No such file or directory
make: *** No rule to make target `/version.mk`. Stop