Re: new triplet for x32 psABI?

[Eric Blake <eblake at redhat dot com>]

On 10/03/2011 04:25 PM, Michael LIAO wrote:
> Sorry, resend with plain text format.
>
> Hi, Everyone
>
> As x32 psABI (https://sites.google.com/site/x32abi/) is invented, do
> we need a new triplet for system relies on triplet to figure out it's
> targeted on x32 environment. The new triplet would look like
> 'x86_64-unknown-linux-gnux32' for x32 vs 'x86_64-unknown-linux-gnu'
> for regular 64-bit. This's similar to EABI added to ARM or PowerPC,
> where 'arm-unknown-linux-gnueabi' vs. 'arm-unknown-linux-gnu'.

Discussions on new triplets are worthless on the autoconf list, which is 
only a downstream consumer of config.guess; rather, your questions 
should be directed to config-patches@gnu.org [added to cc].

> The new triple doesn't introduce a new target (still x86_64) but just
> a new environment 'gnux32' to specify x32 ABI is used for code
> generation.
>
> The current scheme documented on website
> (https://sites.google.com/site/x32abi/) uses the existing triplet but
> specify x32 ABI through compiler/linker options. It works for most
> compilers aware of that, but how other tools not handling
> compiler/linker options knows the current build is targeted on a
> different environment?
>
> Any comments or alternative suggestion?
>
> Yours
> - Michael
--
Eric Blake   eblake@redhat.com    +1-801-349-2682
Libvirt virtualization library http://libvirt.org