Re: [ANNOUNCEMENT] Updated: mingw64-*-gcc-5.4.0-1 (x86/x86_64) (Testing)

[Yaakov Selkowitz <yselkowitz at cygwin dot com>]

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.

--
Yaakov

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