[PATCH] alpha: Do not build with -fpic

[Adhemerval Zanella]

On 02/03/2020 13:22, Florian Weimer wrote:
> * Jeff Law:
> 
>> On Mon, 2020-03-02 at 16:58 +0100, Florian Weimer wrote:
>>> The combination of GCC 10 and binutils 2.35 (both unreleased) is no
>>> longer able to link the dynamic linker, due to a GP16 relocation
>>> overflow error:
>>>
>>> glibc/alpha-linux-gnu/elf/librtld.os: in function `calloc':
>>> glibc/elf/../include/rtld-malloc.h:44:(.text+0xd98): relocation truncated to
>>> fit: GPREL16 against symbol `__rtld_calloc' defined in .data.rel.ro section
>>> in glibc/alpha-linux-gnu/elf/librtld.os
>>> glibc/alpha-linux-gnu/elf/librtld.os: in function `malloc':
>>> glibc/elf/../include/rtld-malloc.h:56:(.text+0x2978): relocation truncated to
>>> fit: GPREL16 against symbol `__rtld_malloc' defined in .data.rel.ro section
>>> in glibc/alpha-linux-gnu/elf/librtld.os
>>>
>>> This is arguably a linker bug; the object files and their section size
>>> requirements look reasonable enough.
>>>
>>> Using -fPIC (the default) works around this issue.
>> Thanks.  I was literally just about to start chasing this down.  Everything was
>> fine last build (a week ago) and blew up in last night's test:
>>
>> http://3.14.90.209:8080/job/alpha-linux-gnu/lastFailedBuild/
> 
> Credits for spotting this should go to Joseph:
> 
>   <https://www.sourceware.org/ml/libc-alpha/2020-02/msg01023.html>
> 
> Now we need an alpha maintainer to review the workaround.

I fired up a build/check on a alpha machine, I will post the result
once it is done.