[Boost-bugs] [Boost C++ Libraries] #13052: iostreams visibility=hidden for non-Windows platforms

Subject: [Boost-bugs] [Boost C++ Libraries] #13052: iostreams visibility=hidden for non-Windows platforms
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2017-06-01 12:07:49

#13052: iostreams visibility=hidden for non-Windows platforms
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 Reporter:  Mark M <mememory359@…>  |      Owner:  turkanis
     Type:  Bugs                    |     Status:  new
Milestone:  To Be Determined        |  Component:  iostreams
  Version:  Boost 1.64.0            |   Severity:  Problem
 Keywords:                          |
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 For the Mac, I am compiling the Boost libraries and my code using
 visibility=hidden. My code cannot find
 "boost::iostreams::zlib::default_compression". This is defined in
 iostreams/filter/zlib.hpp as
 Code:
 ''BOOST_IOSTREAMS_DECL extern const int default_compression;''

 The only place that BOOST_IOSTREAMS_DECL is defined is
 iostreams/detail/config/dyn_link.hpp.
 That file sets the macro to either Windows-specific settings
 (''declspec(dllexport)''), or leaves it blank.
 So the Boost iostreams library will have the wrong visibility settings.

 This is unlike other places in the Boost code, where the right visibility
 settings are obtained by defining the library DECL macro as
 BOOST_SYMBOL_EXPORT. (Take a look at filesystem/config.hpp as an example
 of how it is done for most of the other libraries.)

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/13052>
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