Re: [Boost-build] Using target alternatives

Subject: Re: [Boost-build] Using target alternatives
From: Vladimir Prus (ghost_at_[hidden])
Date: 2008-09-17 03:47:31

On Wednesday 17 September 2008 06:09:56 Steven Watanabe wrote:
> AMDG
> 
> Phil Bass wrote:
> >   obj Stub_Types_obj : Stub_Types_i386.cpp : <toolset>gcc-x86 ;
> >   obj Stub_Types_obj : Stub_Types_ppc.cpp  : <toolset>gcc-ppc ;
> >
> 
> Try this:
> 
> obj Stub_Types_obj : Stub_Types_i386.cpp : <toolset>gcc 
> <toolset-gcc:version>x86 ;
> 
> > So I have two questions. First, is it possible to select by toolset 
> > version? (I haven't been able to find anything in the docs on this.) 
> > And, second, what should I be doing to create an object file from one 
> > of two source files depending on the selected toolset/version?
> 
> Your going about it the correct way.  Unfortunately, Boost.Build does 
> not seem
> to expand subfeatures in target requirements.

It's supposed to -- but I can imagine it not expanding subfeatures when
selecting alternative.

A bug report in trac would be appreciated.

- Volodya