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From: gillham@andrews.edu (Andrew Gillham)
Newsgroups: comp.os.386bsd.bugs
Subject: Re: FreeBSD porting questions.
Date: 26 Jan 1995 06:32:59 GMT
Organization: Andrews University
Lines: 36
Message-ID: <3g7fmr$p9k@orion.cc.andrews.edu>
References: <3fh7id$an3@mars.mcs.com> <3g64ds$bak@grapevine.lcs.mit.edu>
NNTP-Posting-Host: edmund.cs.andrews.edu
In article <3g64ds$bak@grapevine.lcs.mit.edu> wollman@ginger.lcs.mit.edu (Garrett A. Wollman) writes:
>
>In article <3fh7id$an3@mars.mcs.com>,
>Christopher Hilton <chilton@MCS.COM> wrote:
>> What's the #define symbol that the FreeBSD c compiler includes for
>>environment detections and what is it defined to? Is it __FreeBSD__ and is
>>defined to the version of the operating system?
>
>The example program in /usr/share/examples/FreeBSD_version should tell
>you everything you need to know.
Also, you can always create a file "foo.c" (like: main(){} )
and then do the following: (here's what I get on NetBSD 1.0)
% gcc -E -dM foo.c
#define __i386__ 1
#define __NetBSD__ 1
#define __i386 1
#define i386 1
#define __unix 1
#define __unix__ 1
#define __GNUC__ 2
#define unix 1
This shows you the compiler's defines... So you can do this on
any platform to figure out what's defined automatically.
-Andrew
--
==========================================================
Andrew Gillham gillham@andrews.edu
LAN/WAN/Netware/Unix Analyst gillham@whirlpool.com
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