I'd say that splitting XS in two parts really depends on the amount of the ifdef'd code. If it is small, do not split, otherwise do. You might even want to create win32.c and unix.c with common API that is called from the single XS.

There's one thing more: cygwin and mingw environments. These two are curious mixes of pure win32 and unix APIs, and before attempting the separation I'd recommend to run your code on these first.

In reply to Re: Splitting an extension based on OS by dk
in thread Splitting an extension based on OS by syphilis

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