Gentoo Archives: gentoo-dev

From: "Michał Górny" <mgorny@g.o>
To: gentoo-dev@l.g.o
Cc: vapier@g.o
Subject: Re: [gentoo-dev] x32 fun pants
Date: Thu, 15 Sep 2011 21:03:09
Message-Id: 20110915230307.31dac38a@pomiocik.lan
In Reply to: Re: [gentoo-dev] x32 fun pants by Mike Frysinger
On Thu, 15 Sep 2011 16:33:48 -0400
Mike Frysinger <vapier@g.o> wrote:

> On Thursday, September 15, 2011 16:12:00 Michał Górny wrote: > > On Thu, 15 Sep 2011 15:34:06 -0400 Mike Frysinger wrote: > > > KEYWORDS wise, i'd like to avoid having to add "x32" everywhere. > > > instead, reusing "amd64". only downside is the existing USE=amd64 > > > behavior, but we can address that by making MULTILIB_ABIS a > > > USE_EXPAND (i think this came up before with the portage multilib > > > discussion). > > > > Hrm, wouldn't that be more like x86 keyword? AFAICS the type sizes > > for x86 and x32 would match. > > the sizeof(long) and sizeof(void*) are the same between x86 and x32. > however, that's about the only thing. for example, x32 gets access > to 64bit registers when working with 64bit types (long long) and the > tuple is x86_64-pc-linux- gnu. in general, it seems to be closer to > amd64 than x32. -mike
I'm rather thinking about potential issues. But OTOH packages fixed for amd64 should probably work with x32 as well. Excluding asm code which would probably need a third variant then. -- Best regards, Michał Górny

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Re: [gentoo-dev] x32 fun pants Mike Frysinger <vapier@g.o>