Andrei

Thanks for your comments.

Andrei wrote:
>> Jean-Philippe Barette-LaPierre wrote:
>>> I don't see why it wouldn't be possible to have curlpp as a dynamic library, since folks at my office are using it that way. I admit that they are using it under linux but I don't see what would be the difference in windows.
>> How come? :) If they use it as a library (in fact doesn't matter wheather it's static or dynamic; the problem is the same) then make all inl files in their curlpp empty and let them compile and link their app. I think their app won't even compile anymore not to mention linking.
>
> 1. I think what you want is the "export template" C++ feature. For this
> moment it is only exists as a "proof-of-concept" and is supported by
> Comeau compiler only. IMHO it hardly appear as a standard feature at
> least in close future.

I know.

> Think about templates as a piece of code which appears in your app's
> header. This code is not "exported" from the library because it is not
> instantiated there.
> Think about the specialized template as a "normal" function which can be
> defined in a library, so you might need some additional effort (like
> dllexport/dllimport) to be exported from the library.

That's why I propose to make additional source files with explicit instantiations to force code
generation into the object files of curlpp. Right now you can't put curlpp into a library file.

> 2. Mind that the 'folks' curlpp template stuff from shared libs in *nix.
> On *nix all symbols are exported from the shared library by default
> unless you hide some of them with a compiler-specific options.

I think this doesn't matter here. As you pointed out it's a problem of weather code is generated and exists in a library object file or not. Visibility and name mangling have to be taken into account as well but I don't see any problems with these now.

Regards
Piotr Dobrogost
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Received on 2008-11-22