Re: darwin cross compiling breakage

[Geoffrey Keating <geoffk at apple dot com>]

Andrew Pinski <pinskia@physics.uc.edu> writes:

> On Jun 6, 2006, at 5:57 AM, Mike Stump wrote:
> 
> > The recent changes to support code generation for the current
> > machine on x86 has broken darwin's ppc x i386 compiler.  :-(  We go
> > out of our way to not define CROSS_COMPILE to get everything to
> > work right, but there just isn't anyway to run x86 instructions of
> > the ppc to figure out what x86 cpu we're on.  :-)  We could run ppc
> > instructions on the x86, but I digress.
> 
> That seems wrong.  Not defining CROSS_COMPILE is asking for trouble
> later on.  This is just one
> example.

When I implemented the darwin cross support, every single thing that
CROSS_COMPILE was causing to happen was wrong.  I don't really want to
go through the compiler and make every instance of

#ifdef CROSS_COMPILE

into

#if defined(CROSS_COMPILE) && ! defined (DARWIN_CROSS)

or similar, because that is also asking for trouble later on, when
someone adds a new #if and forgets to special-case darwin.