cpp in OS X, information needed

[Julio Merino <jmmv84%gmail.com@localhost>]

Hello,

I'm investigating why pkgsrc sets CPP to gcc in OS X.  The comment in
the code says it's because we need to use the gcc-provided cpp, but in
Leopard cpp is just a wrapper around gcc.

If you have 10.4 or earlier, could you please provide the following details?

- Whether /usr/bin/cpp is a script or a binary.
- If it is a binary, whether it is part of the gcc toolchain or not.
"cpp --version" should give you these details.
- If you have any idea why CPP was explicitly set.  The CVS logs
provide no real information about this.

Depending on the information we get, we may revert the special setting
in OS X and just use cpp.

Thanks,

-- 
Julio Merino