[coreboot] buildgcc on Debian Stretch (9)

[Nico Huber]

On 22.12.2016 19:09, Nico Huber wrote:
> On 22.12.2016 04:13, Jonathan Neuschäfer wrote:
>> On Wed, Dec 21, 2016 at 08:05:28PM +0100, Nico Huber wrote:
>>> On 21.12.2016 02:53, Jonathan Neuschäfer wrote:
>> [...]
>>> That's known trouble due to their GCC using `-fpie/-pie` by default now.
>>> One way to work around is adding `-with-pic` to the configure step when
>>> building GMP.
>>>
>>> We could do that automatically. I guess, there is something in `gcc
>>> -dumpspecs` that could be used. Can you provide that output for the
>>> failing GCC, please.
>>>
>>> Nico
>>
>> $ gcc --version
>> gcc (Debian 6.2.1-5) 6.2.1 20161124
>> Copyright (C) 2016 Free Software Foundation, Inc.
>> This is free software; see the source for copying conditions.  There is NO
>> warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
>>
>> $ gcc -dumpspecs
>> <see attachment>
> 
> Thanks.
> 
> I've found two working (i386-elf tested only yet) alternatives and
> pushed them to gerrit:
> 
> https://review.coreboot.org/#/c/17936/
> https://review.coreboot.org/#/c/17938/
> 
> I prefer the latter for treating all GCCs the same way, without changing
> anything obvious for compilers that don't default to `-pie`.

After some more testing the latter turned out to become quite fragile,
since older versions of GCC don't know the `-pie` flag. Which also
breaks the bootstrapping option.

I've build tested 17936 on Stretch now for all target architectures
without bootstrapping and for i386 with bootstrapping.

Nico