[ipxe-devel] iPXE build failure on Fedora 19 (rawhide)

[Michael Brown]

On 05/03/13 14:04, Daniel P. Berrange wrote:
>> I've applied for access to the GCC Compile Farm, to make it easier
>> to try out various fixes across multiple gcc versions.  In the
>> meantime, if anyone has a gcc 4.8.0 box already set up and wants to
>> report on whether or not the unused-output approach works, please do
>> so!
>
> If you can provide the possible patch, I'll happily give it a spin on
> a Fedora rawhide gcc 4.8.

Actually, it doesn't look as though there's any way to even ask gcc to 
do this.  According to

   http://gcc.gnu.org/onlinedocs/gcc/Machine-Constraints.html

it's possible to use the "=R" constraint to specify any general-purpose 
register (including bp), but there's no way to explicitly specify bp itself.

I'll wait for compile farm access and then try out some options.

Michael