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

Subject: Re: [boost] [config] GCC symbol visibility across shared libraries
From: Stewart, Robert (Robert.Stewart_at_[hidden])
Date: 2010-05-20 15:20:58

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

_____
Rob Stewart                           robert.stewart_at_[hidden]
Software Engineer, Core Software      using std::disclaimer;
Susquehanna International Group, LLP  http://www.sig.com

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