[gambit-list] #ifdef equivalent in Scheme?

I'm trying to get Black Hole trunk to run on Windows & need to compile different Scheme code depending on the target OS.

eg. On Unix-like OSes the following is ok:

(compile-file-to-target "/dev/null" output: fn options: options))

...but on Windows `/dev/null' needs to be replaced with `\\.\NUL'. In C I'd do something like:

#ifdef _WINDOWS /* or whatever */ # define NULLDEV "\\.\NUL" #else # define NULLDEV "/dev/null" #endif

Is there a Scheme equivalent to #ifdef et al? If the answer is `no' then please tell me what you'd do in this case?

Thx, Ralph