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

Subject: Re: [Boost-build] Use of 'feature' in user-config.jam file
From: Edward Diener (eldiener_at_[hidden])
Date: 2018-10-23 14:07:35

On 10/23/2018 9:30 AM, Steven Watanabe via Boost-build wrote:
> 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)

Thank you ! Using 'feature' does want I want to do and leaves the 
version as is so that the right msvc-setup is loaded correctly.

> 
> In Christ,
> Steven Watanabe