id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
6998	visibility problems on Mac OS X / GCC	Mathias Gaunard	Vladimir Prus	"When an application built with -fvisibility=hidden is linked against libboost_program_options.dylib (built with default visibility), the linker emits the following warning:

    ld: warning: direct access in !__static_initialization_and_destruction_0(int, int) to global weak symbol boost::program_options::options_description::~options_description() means the weak symbol cannot be overridden at runtime. This was likely caused by different translation units being compiled with different visibility settings.

Even if the two are built with different visibility settings the program_options headers should force whatever needs to be visible to be."	Bugs	new	To Be Determined	program_options	Boost 1.49.0	Problem		visibility gcc mac