Why BOOST_HAS_DECLSPEC is not defined under MingW?

[Artyom Beilis]

Hello,

I've noticed following lines under boost/config/platform/win32.hpp

#if !defined(__GNUC__) && !defined(BOOST_HAS_DECLSPEC)
#  define BOOST_HAS_DECLSPEC
#endif


Why? GCC provides support of declspec, Why it is specifically undefined?
It can auto-export symbols but it does not work when static members involved.


Thanks,
   Artyom


     
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