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 15:05:12

Beman Dawes wrote:
>
> Here is the code I'm experimenting with for Boost.System:
>
> //  define BOOST_SYSTEM_DECL and BOOST_SYSTEM_VISIBLE
> #if defined(BOOST_ALL_DYN_LINK) || defined(BOOST_SYSTEM_DYN_LINK)
> # if defined(BOOST_SYSTEM_SOURCE)
> #   define BOOST_SYSTEM_DECL BOOST_SYMBOL_EXPORT
> # else
> #   define BOOST_SYSTEM_DECL BOOST_SYMBOL_IMPORT
> # endif
> # define BOOST_SYSTEM_VISIBLE BOOST_SYMBOL_VISIBLE
> #else
> # define BOOST_SYSTEM_DECL
> # define BOOST_SYSTEM_VISIBLE
> #endif

Why create your own BOOST_SYSTEM_VISIBLE?  Why not just use BOOST_SYMBOL_VISIBLE for all libraries?

_____
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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