Re: Adding a parameter for use in toolchain 'using' line

AMDG

On 08/21/2018 08:31 AM, Kuhl, Brian via Boost-build wrote:
> <snip>
> With something like this:
> 
> using clang-vxworks : : $(cxx) :
>                     <cflags>$(cflags)
>                     <cxxflags>$(cxxflags)
>                     <compileflags>$(compileflags)
>                     <archiver>$(ar)
>                     <linker>$(linker)
>                     <library-path>$(library-path)
>                     <libraries>$(libraries)
>                     <crt0-obj>$(crt0-obj)
>                     <linkflags>$(linkflags)
>                     <linkflags-static>$(linkflags-static)
>                     <linkflags-dynamic>$(linkflags-dynamic)
>                     <linkflags-dll>$(linkflags-dll) ;
> 
> But some options on the "using" line appear to be regular "features" and some don't appear to be defined anywhere  as a formal feature?  Where are these "special features" declared, and how is there behavior different from a regular "feature"?
> 

They are *not* features.  Even the ones that have the
same names as features are not actually features.
They are all processed by the init rule:

-
https://github.com/boostorg/build/blob/develop/src/tools/clang-vxworks.jam#L65
  handles standard cflags, cxxflags, linkflags.
-
https://github.com/boostorg/build/blob/develop/src/tools/clang-vxworks.jam#L70
  looks up the toolset specific option <archiver>

In Christ,
Steven Watanabe
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