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Re: [PATCH] PR bootstrap/65176: config.guess failed to guess machine with 64-bit kernel and 32-bit user space
- From: "H.J. Lu" <hjl dot tools at gmail dot com>
- To: Jakub Jelinek <jakub at redhat dot com>
- Cc: GCC Patches <gcc-patches at gcc dot gnu dot org>, GNU C Library <libc-alpha at sourceware dot org>, Binutils <binutils at sourceware dot org>, "config-patches at gnu dot org" <config-patches at gnu dot org>
- Date: Mon, 23 Feb 2015 09:49:43 -0800
- Subject: Re: [PATCH] PR bootstrap/65176: config.guess failed to guess machine with 64-bit kernel and 32-bit user space
- Authentication-results: sourceware.org; auth=none
- References: <20150223171743 dot GA32755 at intel dot com> <20150223174025 dot GJ1746 at tucnak dot redhat dot com>
On Mon, Feb 23, 2015 at 9:40 AM, Jakub Jelinek <jakub@redhat.com> wrote:
> On Mon, Feb 23, 2015 at 09:17:43AM -0800, H.J. Lu wrote:
>> 32-bit and x32 user-space environments may be running under Linux/x86-64
>> kernel. Using "uname -m" isn't sufficient to properly detect the
>> canonical system name for 32-bit and x32 user-space environments. This
>> patch checks if compiler is configured for 64-bit, 32-bit or x32 objects
>> under Linux/x86-64 kernel.
>>
>> Tested with 64-bit, 32-bit and x32 user-space environments under
>> Linux/x86-64 kernel. I am not sure if this will ever be accepted in
>> upstream since the config.guess maintainer doesn't want to add a new
>> use of set_cc_for_build to config.guess. set_cc_for_build is used for
>> Linux:
>
> Ugh, isn't this what setarch is meant for?
>
It doesn't cover x32.
--
H.J.