Re: [gentoo-mips] Re: On MIPS using the same CHOST for all multilib ABIs

[Markos Chandras]

On 12/29/2013 09:48 PM, Michał Górny wrote:
> Dnia 2013-12-29, o godz. 16:40:08
> Joshua Kinard <kumba@g.o> 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