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

["Michał Górny" <mgorny@gentoo.org>]

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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.

-- 
Best regards,
Michał Górny

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