Re: [Boost-build] linking and running tests in parallel

From: René Ferdinand Rivera Morell (grafikrobot_at_[hidden])
Date: 2020-08-29 03:08:20

On Fri, Aug 28, 2020 at 10:23 AM René Ferdinand Rivera Morell <
grafikrobot_at_[hidden]> wrote:

> On Fri, Aug 28, 2020 at 9:52 AM John Maddock via Boost-build <
> boost-build_at_[hidden]> wrote:
>
>>
>> On 28/08/2020 11:46, Arvid Norberg via Boost-build wrote:
>> > On Sat, Mar 30, 2019 at 4:45 PM Steven Watanabe via Boost-build
>> > <boost-build_at_[hidden] <mailto:boost-build_at_[hidden]>>
>> wrote:
>> >
>> >     On 3/29/19 2:57 AM, Arvid Norberg via Boost-build wrote:
>> >     > <snip>
>> >     > In the gcc toolset, there's mentioning of JAM_SEMAPHORE, in the
>> >     link rules.
>> >     > I don't fully understand how this affect the linking, but I
>> >     suspect it
>> >     > means only one target can be linked at a time.
>> >     >
>> >     >
>> >
>> https://github.com/boostorg/build/blob/develop/src/tools/gcc.jam#L1064
>> >     <
>> https://github.com/boostorg/build/blob/develop/src/tools/gcc.jam#L1064>
>> >     > [...]
>> >
>> >     This is a very old optimization which is almost
>> >     certainly out-dated.  If no one objects, I'm
>> >     just going to remove it.
>> >
>> >
>>
>> Yes please!!!
>>
>> I've complained about this before, it's a huge bottleneck building for
>> MIngw - basically the obj files get built first, and then it sits doing
>> pretty much nothing linking one test at a time :(
>>
>
> Is there an issue or PR for this? I'll fix it regardless :-) Just
> wondering if I missed something.
>

Anyway... Here it is <
https://github.com/boostorg/build/commit/54f811b7593dc751ec1b306cad27f32cfce81f36
>.

-- 
-- René Ferdinand Rivera Morell
-- Don't Assume Anything  -- No Supone Nada
-- Robot Dreams - http://robot-dreams.net