From owner-freebsd-current  Sun Jul  8  0:44:44 2001
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Date: Sun, 8 Jul 2001 17:42:28 +1000 (EST)
From: Bruce Evans <bde@zeta.org.au>
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To: Dag-Erling Smorgrav <des@ofug.org>
Cc: obrien@FreeBSD.ORG, Kris Kennaway <kris@obsecurity.org>,
	John Baldwin <jhb@FreeBSD.ORG>, freebsd-current@FreeBSD.ORG,
	Jim.Pirzyk@disney.com, mjacob@feral.com,
	Jordan Hubbard <jkh@osd.bsdi.com>
Subject: Re: chgrp broken on alpha systems
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On 8 Jul 2001, Dag-Erling Smorgrav wrote:

> "David O'Brien" <obrien@FreeBSD.org> writes:
> > OR build a 64-bit long (LP64) x86 gcc and test compile with that also.
> > BDE found *lots* of 64-bit dirty code using this technique.
> 
> Mind revealing how that's done?

Compiling [g]cc with -DLONG_TYPE_SIZE=64 gives an I32L64P32 compiler
(you can also try setting CHAR_TYPE_SIZE through LONG_DOUBLE_TYPE_SIZE
to unusual values to get a more exotic compiler).  Then fix some build
issues (mainly with quad functions in libc; I just hack around these
by copying the 3 relevant 32-bit quad objects to the libc obj directory),
and fix all the unportable code (I fixed enough to bootstrap but haven't
committed everything.  I build the world on a normal 32-bit i386 using
something like:

    CC='cc -D_LARGE_LONG' \
    DESTDIR=/c/z/root \
    LONG_TYPE_SIZE=64 \
    MAKEOBJDIRPREFIX=/c/z/obj \
    time -l make -s world > /tmp/world.out 2>&1

(-D_LARGE_LONG is a wrong hack.  It affects <limits.h>, but <limits.h>
should only be affected for the target.).

Bruce


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