[Mesa-dev] [PATCH] gallium: build ddebug, noop, rbug, trace as part of auxiliary

[Marek Olšák]

On Wed, Sep 6, 2017 at 2:08 PM, Emil Velikov <emil.l.velikov at gmail.com> wrote:
> On 6 September 2017 at 12:11, Marek Olšák <maraeo at gmail.com> wrote:
>> On Wed, Sep 6, 2017 at 1:02 PM, Marek Olšák <maraeo at gmail.com> wrote:
>>> On Wed, Sep 6, 2017 at 12:38 PM, Emil Velikov <emil.l.velikov at gmail.com> wrote:
>>>> On 4 September 2017 at 21:36, Marek Olšák <maraeo at gmail.com> wrote:
>>>>> From: Marek Olšák <marek.olsak at amd.com>
>>>>>
>>>>> Building gallium is faster by 7.5 seconds on a 4core/8thread 3GHz CPU.
>>>>> (gallium build time is reduced by 15% when building only radeonsi)
>>>>>
>>>> Some of this can be attributed to a couple libraries less to link.
>>>> Speaking of which, did you switch to the gold linker, it should
>>>> utilise the multiple cores/threads nicely.
>>>
>>> Sadly no.
>>
>> How do I switch to the gold linker?
>>
> There's multiple ways:
>  - manually (or via binutils-config –linker ld.gold) set the default /usr/bin/ld
> By default Arch has _hardlink_ to ld.bfd
>  - export LD=ld.gold // haven't tried it
>  - Add -fuse-ld=gold to the LDFLAGS (you may need a libtool patch [1])
>
> HTH
> Emil
>
> [1] http://git.savannah.gnu.org/cgit/libtool.git/commit/?id=f9970d99293faf908fdc153a653fa5781095fb7a

Thanks. I used LDFLAGS and it does improve build times, but the linking
still seems mostly single-threaded.

Marek