Thanks for answers! I need this because support for wmihelper in Qt5 for
mingw-w64
2012/10/16 Ruben Van Boxem <[email protected]>
> 2012/10/16 Kai Tietz <[email protected]>
>
>> 2012/10/16 Antony Riakiotakis <[email protected]>:
>> > Usually __MINGW64__ is defined so you can check for that in the source.
>>
>> First, that define is only set for 64-bit mode, but mingw-w64 also
>> supports 32-bit (old mingw.org) mode. Secondly that define is
>> provided by the compiler and isn't runtime-specific at all.
>> As long as programmer of an application didn't provided a function to
>> answer your question, you won't be able to detect it that easy. There
>> are ways to find out by inspecting startup-code, which is slightly
>> different between both ventures.
>>
>
> Something I use when I need it:
>
> #ifdef __MINGW32__ // on some form of MinGW toolchain
> #include <_mingw.h> // MinGW internal header present for all MinGW variants
> #ifdef __MINGW64_VERSION_MAJOR
> // We're compiling with MinGW-w64 32 or 64-bit
> #else
> // We're compiling with MinGW.org
> #endif
> #endif
>
> See here:
> http://www.mail-archive.com/[email protected]/msg00638.html
> __MINGW64__ only really signifies x64 Windows and MinGW. I bet that if
> MinGW.org ever come with a 64-bit variant (not likely), they'd define this
> for consistency (just as MinGW-w64 does).
>
> If you need to detect bitness as well, use the builtin GCC defines for
> architecture: http://sourceforge.net/p/predef/wiki/Architectures/
>
> Ruben
>
>
>> Regards,
>> Kai
>>
>>
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>
>
>
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