“Source binary” doesn’t mean anything. Source code is normally in ascii, not in binary. By “precompiled” do you just mean “compiled”? A “source file” can’t contain 50 files unless it’s a zip or something. Do you mean a source “directory”?

Is it a static library, dynamically linked library or executable that you want to produce?

Most development environments these days have incremental compilations that determine file dependencies and only recompile what has been affected by file changes. You might have a “recompile all” command if you specifically want to make sure everything is compiled, but normally you use an incremental compilation command.

If you don’t know what to do, I suggest you look through the documentation that comes with your compiler (or try to look it up on the internet). Make sure you thoroughly understand how your tools work before trying to use them.