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Date: Tue, 12 Jul 2011 23:06:12 +0200
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From: Robert Millan <rmh@debian.org>
To: Alexander Kabaev <kabaev@gmail.com>
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Cc: freebsd-hackers@freebsd.org, Ed Maste <emaste@freebsd.org>,
	Oliver Pinter <oliver.pntr@gmail.com>
Subject: Re: [PATCH] fake pre-processor macros when building on non-FreeBSD
	system
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2011/7/12 Alexander Kabaev <kabaev@gmail.com>:
> Whatever happened to using a proper cross-tool to do the job?

Why would one need to build a cross-compiler in order to compile
userland-agnostic code for the same CPU architecture?  This would be
like requiring a cross-compiler in order to build things like GRUB or
SeaBIOS.

> Why is this hack needed?

The kernel tree expects flags like __linux__ or __FreeBSD__ to have a
different meaning when compiling for kernel space.  Instead of "we're
building code that will run on $foo", they mean "we're building $foo
itself". This assumption is correct most of the time, but not always
so.  My patch addresses some of the situations in which the assumption
fails.

-- 
Robert Millan