Re: [boost] [config] GCC symbol visibility across shared libraries

Subject: Re: [boost] [config] GCC symbol visibility across shared libraries
From: Jürgen Hunold (juergen.hunold_at_[hidden])
Date: 2010-05-20 17:02:57

Hi Robert !

On Thursday, 20. May 2010 21:20:58 you wrote:
> Here's a notable distinction between GCC's visibility attribute and MSVC's
> __declspec: The latter is accepted on forward declarations while the
> latter produces a warning[*] and is otherwise ignored.  That is, for
> portability, BOOST_SYMBOL_EXPORT must be applied to a UDT definition and
> not to a declaration.
>
> * foo.hpp:n: warning: type attributes are honored only at type definition

Yes, this is a known issue. My patch removes the macros from some 
declarations. msvc seems to work without them anyway.

Yours,

Jürgen
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