Re: [Boost-testing] RC 1.34 build broken since at least 20070315-072956 UTC

From: Vladimir Prus (ghost_at_[hidden])
Date: 2007-03-16 17:16:43

David Abrahams wrote:

> 
> on Fri Mar 16 2007, Martin Wille <mw8329-AT-yahoo.com.au> wrote:
> 
>>> Apparently you have
>>> 
>>>   using python : 2.4 : ... ;
>>>   using python : 2.4 : ... : : : <toolset>gcc
>>>   <toolset-gcc:version>4.1.2_linux_x86_64 ; using python : 2.4 : ... : :
>>>   : <toolset>gcc <toolset-gcc:version>4.1.0_linux_x86_64 ;
>>> 
>>> I'm not 100% sure, but I *think* the problem here is that you used a
>>> conditional property in the "condition" parameter where you should
>>> have used a plain one:
>>> 
>>>   using python : 2.4 : ... : : : <toolset>gcc-4.1.2_linux_x86_64 ;
>>>   using python : 2.4 : ... : : : <toolset>gcc-4.1.0_linux_x86_64 ;
>>> 
>>> Volodya will have to confirm/deny my guess as to the problem I think.
>>
>> FWIW, I wrote those using lines the way Volodya told me on IRC.
> 
> Well, actually, I can't figure out what that incantation isn't
> supposed to mean, because AFAICT that syntax isn't documented
> anywhere.  At least, the regexp
> 
>          &lt;[-a-z_]+:
> 
> doesn't appear anywhere in the BBv2 docs' XML sources.  Volodya will
> definitely have to clarify.  Hopefully he'll update the docs too ;-)

Ehm, the 

        <toolset-gcc:version>4.1.2_linux_x86_64 ;

syntax was invented by you, it's "subfeature". So, 

        <toolset>gcc-4.1.2_linux_x86_64

should be equivalent to 

        <toolset>gcc <toolset-gcc:version>4.1.2_linux_x86_64

in all contexts. Previously, we did not expand subfeatures in some
places, so I suggested to Martin that he spells down expanded subfeatures
explicitly. 

Although we're supposed to expand everything now, I don't see
why we should disallow using:

        <toolset>gcc <toolset-gcc:version>4.1.2_linux_x86_64

- Volodya