On 8/8/2016 07:48, Yaakov Selkowitz wrote:
> On 2016-08-05 18:15, JonY wrote:
>> I have just updated the mingw-w64 cross compilers Cygwin 32bit and 64bit.
>>
>> This version is considered testing and has --enable-vtable-verify set.
>> I'd consider moving it to stable if it can build non-trivial C++
>> applications.
> 
> I had no issues compiling a few different projects with this release,
> however enabling this configure flag means that linking C++ with -static
> does not work because libstdc++.a then requires VTV symbols.  Also, note
> that neither Fedora's nor (AFAICS) Debian's native gcc enable this
> feature, so I don't know how much exposure it has received yet.
> 
> I would recommend rebuilding a 5.4.0-2 without this configure flag, and
> releasing it as stable.
> 
>> ==== PLEASE RECOMPILE ALL YOUR C++ CODE FOR ABI COMPATIBILITY ====
> 
> Until this is stable and mingw-based C++ packages have been recompiled,
> -D_GLIBCXX_USE_CXX11_ABI=0 can be used as a workaround.
> 

OK then, I'll redo the build without the vtable-verify flag.