L4Re build system

Hello, Hackers! I have some questions about L4Re build system 1. How to build library from *.cpp files? The library building if I rename *.cpp files to *.cc but it not easy. I tried to modify mk-files, see attached patch. *.cpp files compiled but don't linked correctly, *.cpp files added to linker command. 2. How to correct add prebuild and postbuild rules to Makefile for prog and library roles? Thanks. -- Best Regards, Ivan Loskutov