Re: project id's

From: brock_peabody (bpyama_at_[hidden])
Date: 2003-10-08 14:34:52

Volodya,

We're almost there.

I can get everything to work now except for the requirements part. 
Boost.Build accepts the following Jamfile but it does not do what I 
expect:

project
: requirements <threading>multi
;

use-project /boost/thread : $(BOOST_ROOT)/libs/thread/build ;

exe a : a.cpp /boost/thread//boost_thread : <threading>multi ;

Notice that I've tried to specify threading as multi two ways. 
Neither one has the desired effect - it still tries to depend 
on /boost/thread as a single threaded library.

Everything works just fine if I specify "threading=multi" on the 
command line though, so I can move forward even with this unresolved.

Thank you very much for your help and patience.

Brock

--- In jamboost_at_[hidden], Vladimir Prus <ghost_at_c...> wrote:

[...]

> Yes, you're building your project with 
default "<threading>single". 
> Boost.Build refuses to build Boost.Thread in that case. Note that 
even if it 
> worked, it's likely to crash at runtime, since when compiling with 
> <threading>single other code might not be thread-safe.
> 
> The solution is to either
> 
> - add "threading=multi" to bjam command line
> - add "<threading>multi" to the requrements of your proejct
> (if it really required threading support)
> 
> project
> : requirements <threading>multi
> ;
> 
> - add "<threading>multi" to default build of your project
> 
> project
> : default-build <threading>multi
> ;
[...]