Re: [boost] PSA: Travis OS X bottleneck, <cxxstd> new Boost.Build feature

Subject: Re: [boost] PSA: Travis OS X bottleneck, <cxxstd> new Boost.Build feature
From: Vicente J. Botet Escriba (vicente.botet_at_[hidden])
Date: 2017-10-27 06:21:24

Le 26/10/2017 à 18:43, Peter Dimov via Boost a écrit :
> Travis's OS X resources for open source projects seem to be 
> insufficient, so OS X jobs are very slow and seem to be falling 
> further and further behind. Therefore, library authors are encouraged 
> to keep the OS X jobs to the minimum necessary. Spawning many OS X 
> jobs takes hours (~25 minutes waiting time per job at a quick estimate).
>
Yes, I've notice it. Do you mean that the route cause are the new Boost 
builds? Or is it a bug in travis?

> On a not entirely unrelated note, Rene Rivera has added a new feature 
> <cxxstd> to Boost.Build that controls the C++ standard in use. So for 
> instance, instead of the old
>
> Â Â  b2 libs/mylib/test toolset=gcc cxxflags=-std=c++11
>
> one can now use
>
> Â Â  b2 libs/mylib/test toolset=gcc cxxstd=11
>
> In addition to being more convenient, this also allows several 
> invocations to be combined into one:
>
> Â Â  b2 libs/mylib/test toolset=clang cxxstd=03,11,14,1z
>
> which can be leveraged to cut down on the number of jobs.
>
> An example of using cxxstd in .travis.yml can be seen here:
>
> https://github.com/boostorg/system/blob/develop/.travis.yml
Thanks Peter for the information.

Best,
vicente