Re: [boost] Using multiple versions of Boost

From: Bjørn Roald (bjorn_at_[hidden])
Date: 2007-05-17 13:40:33

John Maddock wrote:
> Bjørn Roald wrote:
>   
>> Well -namespace=boost_1_34_0 actually does a bit more.  It renames
>> directories and include directives so stuff like
>>
>> #include <boost/filesystem/path.hpp>
>>
>> becomes
>>
>> #include <boost_1_34_0/filesystem/path.hpp>
>>
>> and should work.  It also replaces all instances of BOOST_ prefix in
>> preprocessor symbol definitions and references with BOOST_1_34_0_ and
>> processes Jamfiles as well so my hope was that all should build, test,
>> and work without touch up work.
>>
>> Also in the general case
>>
>> ../bin/boost/libs/filesystem/build/libboost_filesystem.a/gcc/debug/libboost_filesystem-gcc-d-1_33_1.a
>>
>> should become
>>
>> ../bin/boost_1_34_0/libs/filesystem/build/lib/boost_1_34_0_filesystem.a/gcc/debug/libboost_1_34_0_filesystem-gcc-d-1_33_1.a
>>
>> In this specific case the additional 1_34_0 substrings are just
>> annoyance, so I guess we need to treat it as a special case when we
>> have
>> a version part of the new namespace.  But as I said library path
>> naming
>> is not implemented yet.  I guess this can be done by treating some
>> configuration files for the build system.  This may be outside the
>> scope
>> of the bcp tool.
>>
>> So..  given all this, are you still sure this is worth adding?
>>     
>
> Sure, why not.
>
>   
>> Also, is -namespace  the best  name for the command line option?
>>     
>
> Yep.
>
>   
>> I have working code and will happily merge with 1.34.0 version of bcp
>> and provide you a patch.   Then you can use what you like, fix  what
>> you
>> like to fix,  and dump what you don't like :-)
>>     
>
> OK :-)
>
> Cheers, John. 
>   

Ok, I will post a patch here within 2 or 3 days.

-- 
Bjørn