From: "Iñaki Baz Castillo" <ibc@...>
Date: 2012-05-28T23:40:37+09:00
Subject: Re: [C exten] extconf.rg and #ifdef

2012/5/28 Quintus <quintus@quintilianus.eu>:
> What is wrong with the generic macros the compiler sets itself? If I
> remember correctly, every compiler targeting Windows sets a macro called
> _WIN32, and I bet there’s something similar for other systems. There
> shouldn’t be a need to manually define this in extconf.rb.

That would be, of course, much better than "auto-detecting" in
extconf.rb. However there could be other cases in which I need to
create a #define based on custom requirements.

I will inviestigate about the macro you mean. It seems than in *nix
systems, the compiler "should" set __unix__ define:

http://en.wikipedia.org/wiki/C_preprocessor

Thanks a lot.

-- 
Iñaki Baz Castillo
<ibc@aliax.net>