Re: [Boost-build] Use of 'feature' in user-config.jam file

Subject: Re: [Boost-build] Use of 'feature' in user-config.jam file
From: Steven Watanabe (watanabesj_at_[hidden])
Date: 2018-10-23 13:30:12

AMDG

On 10/22/2018 10:55 PM, Edward Diener via Boost-build wrote:
> In my user-config.jam I have:
> 
> import toolset ;
> import feature ;
> using msvc : 14.1 ;
> feature.subfeature toolset msvc-14.1 : standard : c14 c17 : optional
> composite propagated ;
> feature.compose <toolset-msvc-14.1:standard>c14 : <cxxflags>"/std:c++14" ;
> feature.compose <toolset-msvc-14.1:standard>c17 :
> <cxxflags>"/std:c++latest" ;
> 
> I invoke b2 with toolset=msvc-14.1-c14 only to get, among a slew of
> Boost Build output:
> 
> error: "c14" is not a known subfeature value of <toolset>msvc
> 
> What am I doing wrong, and how do I correct it ?
> 
Leave out -14.1 in all the subfeature definitions.
The version is a subfeature and subfeatures can't
be chained off of other subfeatures.  (And yes
this should probably be validated in feature.subfeature)

In Christ,
Steven Watanabe