[Distutils] How do I find out the compiler?

Hi, I'm writing a setup.py for the DCOracle extension library. As usual, it was almost trivial :-) But there was one issue which I didn't resolve. The Oracle client libraries are supplied in two forms, for MSVC and for Borland C. As I am using MSVC, I set the library_dirs to the MSVC directory. But I would like to make this portable. For that I need to determine whether the user is running MSVC or Borland C. How do I do that within setup.py? Thanks, Paul Moore