From: Andrey Semashev (andrey.semashev_at_[hidden])
Date: 2021-02-02 15:24:05
On 2/2/21 5:09 PM, Peter Dimov via Boost wrote:
> Andrey Semashev wrote:
>> So, the bottom line, BOOST_PROGRAM_OPTIONS_DECL must be defined to:
>> - BOOST_SYMBOL_EXPORT - on Windows, when the library is being built;
>> - BOOST_SYMBOL_IMPORT - on Windows, when the library is being consumed
>> by user;
>> - BOOST_SYMBOL_VISIBLE - in any other case.
> BOOST_SYMBOL_EXPORT is defined to BOOST_SYMBOL_VISIBLE on non-Windows in
> order to make the third case unnecessary.
> Alexander suggests that on
> macOS (but not Linux), it's also necessary to define BOOST_SYMBOL_IMPORT
> to BOOST_SYMBOL_VISIBLE (instead of to nothing) on non-Windows. This
> seems sensible.
> In other words,
> - BOOST_SYMBOL_EXPORT - when the library is being built;
> - BOOST_SYMBOL_IMPORT - when the library is being consumed by user.
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