Why is Visual Studio 2008 always rebuilding my whole project?

Question

I have a Visual Studio project with about 60 C++ source files. I can do a build, and it completes without errors. But if I immediately hit F7 again, it always re-compiles about

Answer 1

I've solved the same problem.

In my case compiler displayed warning, that /Zi option is required if /Gm is specified.

/Gm enables "minimum rebuild", which requires debug information in .pdb file. So, if you don't want to use .pdb, also disable minumum rebuild - it solved a problem in my case.