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From: Mike Pritchard <mpp>
Message-Id: <199605021955.MAA21094@freefall.freebsd.org>
Subject: Re: LINUX COMPAT_LINUX
To: gibbs@freefall.freebsd.org (Justin T. Gibbs)
Date: Thu, 2 May 1996 12:55:39 -0700 (PDT)
Cc: smpatel@umiacs.umd.edu, phk@critter.tfs.com,
        freebsd-current@freefall.freebsd.org
In-Reply-To: <199605021918.MAA17987@freefall.freebsd.org> from "Justin T. Gibbs" at May 2, 96 12:18:17 pm
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Justin T. Gibbs wrote:
> 
> >On Thu, 2 May 1996, Poul-Henning Kamp wrote:
> >
> >> I'ts renamed to COMPAT_LINUX, which I'm told is also bad, but at least
> >> it doesn't break the compile of the kernel.
> >>
> >> It may change name again if COMPAT_LINUX is too bad for compatibility...
> >
> >COMPAT_LINUX is also what NetBSD uses.  Let's keep it this way, so that we
> >are a little bit more standard.
> 
> I believe that the Linux gcc defines "linux" not "LINUX", so any code
> in our tree that is supposed to have conditional code for Linux should
> use the lowercase  define.  The only place I know of that uses this
> right now is the sequencer code for the aic7xxx driver.

This may be true, but often second/third/whatever party makefiles/software
will do something like:

Makefile:
CFLAGS = -DLINUX	# define this if we are compiling on a Linux system

foo.c:

#ifdef	LINUX
	/* whatever */
#endif
-- 
Mike Pritchard
mpp@FreeBSD.org
"Go that way.  Really fast.  If something gets in your way, turn"