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Message-ID: <52C098C8.4000601@gentoo.org>
Date: Sun, 29 Dec 2013 21:48:56 +0000
From: Markos Chandras <hwoarang@gentoo.org>
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To: gentoo-mips@lists.gentoo.org
Subject: Re: [gentoo-mips] Re: On MIPS using the same CHOST for all multilib
ABIs
References: <20131228235839.5bb0305a@gentoo.org> <52C096B8.1020302@gentoo.org> <20131229224806.66137df9@gentoo.org>
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On 12/29/2013 09:48 PM, Michał Górny wrote:
> Dnia 2013-12-29, o godz. 16:40:08
> Joshua Kinard <kumba@gentoo.org> napisał(a):
>
>> On 12/28/2013 5:58 PM, Michał Górny wrote:
>>> I've noticed today that mips uses the same CHOST value for all three
>>> ABIs it supports:
>>>
>>> arch/mips/mips64/multilib/make.defaults:CHOST_o32="${CHOST}"
>>> arch/mips/mips64/multilib/make.defaults:CHOST_n32=${CHOST}
>>> arch/mips/mips64/multilib/make.defaults:CHOST_n64=${CHOST}
>>> arch/mips/mipsel/mips64el/multilib/make.defaults:CHOST_o32="${CHOST}"
>>> arch/mips/mipsel/mips64el/multilib/make.defaults:CHOST_n32="${CHOST}"
>>> arch/mips/mipsel/mips64el/multilib/make.defaults:CHOST_n64="${CHOST}"
>>>
>>> [...]
>>
>> Matt can probably vouch for this better, but the only two ABIs affected by
>> this are n32 and n64. mips[el]-unknown-linux-gnu implies a 32-bit
>> big/little endian CHOST, which means the o32 ABI.
>> mips64[el]-unknown-linux-gnu means either n32 or n64. So no change should
>> be needed for o32-based installs.
>
> Just to be clear:
>
> profiles/arch/mips/mipsel/mips64el/multilib/make.defaults:
>
> CHOST="mips64el-unknown-linux-gnu"
>
> [...]
>
> CFLAGS_o32="-mabi=32"
> CHOST_o32="${CHOST}"
>
> CFLAGS_n32="-mabi=n32"
> CHOST_n32="${CHOST}"
>
> CFLAGS_n64="-mabi=64"
> CHOST_n64="${CHOST}"
>
> So in this case, o32 actually uses mips64el-unknown-linux-gnu, unless
> I'm missing something.
>
Yes all 3 ABIs use the same tuple.
--
Regards,
Markos Chandras