[sr-dev] compile source file in subdirectory of module

[Mojtaba]

Hi,
Let me know how i could add subdirectory in Makefile for module?
I am developing new module for kamailio. Some source files pasted in
subdirectory of main module. I need to compile them  when i run make
-C command.
But know it just compile all source file that exist in current
directory of module.
With best regards
-- 
--Mojtaba Esfandiari.S