Re: [uml-devel] Re: Supporting building on x86-64 host as 32-bit UML

[Gerd Knorr <kraxel@bytesex.org>]

On Tue, Mar 22, 2005 at 06:53:20PM +0100, Blaisorblade wrote:
> On Sunday 20 March 2005 16:03, Gerd Knorr wrote:
> > > 1) how the user must choose what he wants (SUBARCH=i386 can be useful,
> > > maybe a Kconfig option would be nice - we need to choose the default
> > > depending on the host arch).
> >
> > That one is easy -- just use "linux32 make ...".  That will switch the
> > personality and "uname" will return "i686" instead of "x86_64" then ;)
> linux32 is a SuSE specific alias like the "i386" for Fedora, right (they both 
> alias setarch, IIRC)?

Don't have a "setarch" binary here.  But most likely they do almost the
same, yes.

> > Not needed I think.  Thats used for kconfig and other stuff which runs
> > on the _host_ machine (for cross compiles), thus it doesn't hurt if it
> > is 64 bit.
> I'm not sure, but that's probably needed for the userspace utilities that 
> print out some headers (with offsets inside host proc. specific structs).

Uhm, ok, then it probably is needed.  This also means that you can't
cross-compile uml kernels, right?

  Gerd

-- 
#define printk(args...) fprintf(stderr, ## args)


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