Re: [Boost-users] questions about visibility/dlls under mingw

Subject: Re: [Boost-users] questions about visibility/dlls under mingw
From: Gavin Lambert (boost_at_[hidden])
Date: 2018-11-20 03:54:21

Mere moments ago, quoth I:
> On 20/11/2018 08:07, John Maddock wrote:
>>> BOOST_SYMBOL_IMPORT is not defined to be 
>>> __attribute__((__dllimport__)) under MINGW and that is the source of 
>>> the problem. 
>>
>> That's not true, gcc.hpp has:
>>
>> #Â Â Â  define BOOST_SYMBOL_EXPORT __attribute__((__dllexport__))
>> #Â Â Â  define BOOST_SYMBOL_IMPORT __attribute__((__dllimport__))
>>
>> when _Win32 is defined.
> 
> Only for GCC >= 4.0 though.  Perhaps they have an older gcc?

Also, why does that check use __GNUC__ instead of BOOST_GCC_VERSION?