Platform Support
Single set of sources with conditional compilation for platform-dependent code
Imake to generate Makefile variants
Staging VOBs for each platform hold libraries, executables, and their config recs.
Nightly builds run on all platforms applicable to the release, to make latest libraries and other derived objects available each day
Developers build and unit test on one or two (Unix & NT) platforms.
QE tests eventually execute on all platforms.