Re: [Boost-build] How to create and call a rule which acts differently depending on the build variant?

Subject: Re: [Boost-build] How to create and call a rule which acts differently depending on the build variant?
From: Deniz Bahadir (D.Bahadir_at_[hidden])
Date: 2009-11-12 15:04:34

Thanks Johan,

I think this could be a pretty good solution to my problem. And you
are right, it seems pretty simple. I guess, my problem is, that I am
still struggling with the syntax and semantic of Jamfiles. So some of
the simpler solutions are not so obvious for me.

DENIZ

2009/11/12 Johan Nilsson <r.johan.nilsson_at_[hidden]>:
> Deniz Bahadir wrote:
>>
>> Hi Johan,
>>
>> your solution sounds interesting but its not really what my intention
>> was. (Maybe I was a little imprecise.)
>> I have a lot of libraries that exist with four different
>> postfix/suffix combinations, one for each build variant.
>>
>> libfoo1_debugstatic.a
>> libfoo1_releasestatic.a
>> libfoo1_debugdynamic.so
>> libfoo1_releasedymaic.so
>> ...
>> libfoo100_debugstatic.a
>> libfoo100_releasestatic.a
>> libfoo100_debugdynamic.so
>> libfoo100_releasedymaic.so
>>
>> With your solution I have to write down all 400 library-names. What I
>> was planning was to just write down 100 library-base names
>> (libfoo1 .... libfoo100)
>
> Perhaps I'm dense and not following you. What about this:
>
> path-constant LIB_PATH : relative/path/to/libs ;
> local basenames = foo1 foo2 ... foon ; # Need to add the rest!
>
> for local basename in $(basenames)
> {
>   lib $(basename) : : <file>$(LIB_PATH)/lib$(basename)_debugstatic.a
> <variant>debugstatic ;
>   lib $(basename) : : <file>$(LIB_PATH)/lib$(basename)_debugdynamic.so
> <variant>debugdynamic ;
>   # ... add similar for releasestatic/-dynamic ...
> }
>
> exe bar : <library>foo1 <library>foon ;
>
> I guess it could be simplified even further, just use your imagination.
>
> As an example, you could glob for all files matching specific patterns in
> your library directories, extract the basenames and variants from their
> names and automatically generate all of the above definitions.
>
> / Johan
>
>
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