[Interest] Qt6–QtMultimedia – MinGW Support

[Alexey Pavlov]

Mingw-w64 have added libraries for WMF recently, it not in release version yet. You need use mingw-w64 runtime from git.

Regards,
Alexey.

> 15 нояб. 2021 г., в 16:31, Marius Kittler <mkittler at suse.de> написал(а):
> 
> Hi,
> 
> I've already built Qt 6 Multimedia with the a recent version of mingw-w64 
> (9.0.0) and GCC (11.2.0) but the resulting build was rather limited. In fact 
> I've got nothing:
> 
> ```
> Qt Multimedia:
>  ALSA ................................... no
>  GStreamer 1.0 .......................... no
>  Video for Linux ........................ no
>  PulseAudio ............................. no
>  MMRenderer ............................. no
>  AVFoundation ........................... no
>  Windows Media Foundation ............... no
> ```
> 
> The problem is
> ```
> -- Could NOT find WMF (missing: WMF_MF_LIBRARY WMF_MFUUID_LIBRARY 
> WMF_MFPLAT_LIBRARY WMF_MFCORE_LIBRARY WMF_PROPSYS_LIBRARY) 
> ```
> and I suppose that's really a limitation of mingw-w64 at this point. 
> Unfortunately with Qt 6 WMF is the only remaining backend - except for 
> GStreamer which I suppose one could also use as an alternative. At least the 
> build system was looking for it:
> 
> ```
> -- Could NOT find GStreamer (missing: GStreamer_Core_FOUND 
> GStreamer_Base_FOUND GStreamer_Audio_FOUND GStreamer_Video_FOUND
> ```
> 
> I haven't installed GStreamer libs in my build env but if I actually needed Qt 
> Multimedia I'd try that. Building GStreamer libs and its dependencies for 
> mingw-w64 generally works (maybe not static linking, though).
> 
> Maybe there's also an experimental version of mingw-w64 available which has 
> support for WMF.
> 
> 
> 
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