Re: [boost] [config] 'requres' doesn't take differing-stdintoaccount

Subject: Re: [boost] [config] 'requres' doesn't take differing-stdintoaccount
From: Peter Dimov (lists_at_[hidden])
Date: 2015-06-22 16:24:16

Vladimir Prus wrote:
> > But what then would be your recommendation? How can I have a working 
> > setup, in which I can issue
> >
> > b2 
> > toolset=gcc,gcc-cxx11,gcc-cxx14,clang,clang-cxx11,clang-cxx14,msvc-8.0,msvc-12.0
> >
> > and have it properly detect that gcc by default doesn't support C++11, 
> > but does in -std=c++11 mode?
>
> I think it's impossible to do right now, and the easiest way to support it 
> is to make configure.build function take an additional list of properties 
> that are relevant for this particular test, so that you can pass 
> <toolset-gcc:std> in your configuration check.

Interestingly though, -cxx11 and -cxx14 do end up encoded in the directory 
names (or running tests with the above command wouldn't work.) So it seems 
that the directory logic and the caching logic are separate and the former 
seems more useful, at least in my specific case.