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Subject: Re: [Boost-build] allowing targets to fail
From: Stefan Seefeld (stefan_at_[hidden])
Date: 2017-04-01 11:53:38

On 31.03.2017 13:35, Steven Watanabe via Boost-build wrote:
> On 03/31/2017 11:14 AM, Stefan Seefeld via Boost-build wrote:
>> Ah, interesting ! So this provides a mechanism to capture a target's
>> result while still letting if fail. But it seems this comes at a price:
>> To be able to capture results of individual target builds, I need to
>> submit them individually (via "UPDATE_NOW"), which precludes
>> parallelization.
>> If I submit multiple targets at once, I only get the overall success
>> back. Correct ?
> Yep. As a workaround, you can batch them, and
> then call UPDATE_NOW again individually to get
> the results. UPDATE_NOW never tries to build
> any target more than once, no matter how many times
> it is called from the same b2 process.

I'm actually wondering whether that's (necessary) true: Is the bjam
engine thread-safe ? If I run `b2 -j 8`, may I invoke UPDATE_NOW from
one action and expect other targets to continue to be built in parallel
? Would that break ? Or would that serialize the execution ?


      ...ich hab' noch einen Koffer in Berlin...

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