Re: [PATCH] PR bootstrap/65176: config.guess failed to guess machine with 64-bit kernel and 32-bit user space

[Jakub Jelinek]

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?

        Jakub