Can you do this with GIT?

Hi All,

I hope this is the right forum, it's all I could find. Sincere apologies in advance if I in the wrong place.

I set up a source control system for the company around CVS, but GIT has some very attractive features and I'd like to migrate if it can do some other things that we need.

We produce variations based on a (mostly) common codebase. In CVS I set up "environment" modules for each platform, then when you are working on that platform, you simply check out the correct environment and build. Only the needed code and tools are exposed in that environment (this is important as clients must NOT see each other's code and most customers have some customization). I do this by defining and renaming modules in the CVSROOT modules file.

Does GIT support anything like this? Or another way to acheive the same end?

Thanks muchly, in advance, Colin