Re: [jamboost] bjam template question

From: Rene Rivera (grafik.list_at_[hidden])
Date: 2004-12-20 17:40:31

Robert Ramey wrote:
> I'm trying to use the template target facility as described in
> http://www.boost.org/tools/build/v1/build_system.htm and am having
> difficluties.
> 
> Specifically the document indicates that the syntax is:
> 
> target-type name : sources
> [ : requirements [ : default-BUILD ] ] ;

The rule *is* defined that way in the code (from boost-base.jam):

rule template ( target : sources * : requirements * : default-build * )

> which doesn't seem to work for me. 

How does it not work?

> Looking to the build/Jamfile for
> boost.test I find syntax such as the following:
> 
> template boost_test_lib
> ## sources ##
> :
> ## requirements ##
> ## default build ##
> : <threading>single/multi <runtime-link>static/dynamic
> ;

I'd say that's a bug, and it's specifying the requirements and not the 
default build.

> lib boost_prg_exec_monitor : <template>boost_test_lib
> ../src/$(PRG_EXEC_MON_SOURCES).cpp ;
> 
> Note the absence of the colon (":") character before ##sources. At the very
> least it seems that that the documentation is out of sync with the
> definition of template rule.

Or that particular example is buggy ;-) The templates defined for 
building Boost.Threads is correct though. So perhaps you should look at 
those.

> If I locate to the test/build directory and invoke bjam I get:
> 
> $ bjam -d5 -sTOOLS=vc-7_1 debug >bjam.log
[snip]
> made+ nofind debug
> ...found 1 target...
> ...can't find 1 target...
> $
> 
> That is, it doesn't seem to work either.

Because of the above mentioned bug.

> Adjusting my Jamfile in accordance with example illustrated by
> boost.test/build fails to make my build function.

ditto :-)

> Anyone is free to offer advice.

Look at Boost.Threads.

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