Questions on MinGW configuration of GStreamer SDK Windows build

[Andoni Morales]

2013/1/17 Andoni Morales <ylatuya at gmail.com>:
> 2013/1/16 4ernov <4ernov at gmail.com>:
>> Hello,
>>
>> not sure if it's the right place for questions concerning GStreamer
>> SDK, but still here're some.
>>
>> I have strange problems building helloworld Gst application using
>> MinGW and GStreamer SDK Windows build (2012.11): if I compile the
>> application using latest MinGW with gcc-4.7.2 and Dwarf2 exception
>> model it fails to start with message about undefined symbol
>> __gxx_personality_sj0 in libstdc++6. As I found out, it could mean
>> that GStreamer SDK itself compiled using gcc with sjlj exception
>> model. I still can't understand how C++ exceptions and libstdc++6
>> concerned pure C program and libraries.
>>
>> Then I found another MinGW build with gcc-4.6.2 and sjlj exception
>> model. I've tried to build another application which also depends on
>> Qt4, which I build with this MinGW version, too. As a result I failed
>> to build my project due to compilation error, somehow pthread.h in
>> GStreamer's include directory requires nanosleep() existance in time.h
>> in MinGW and somehow fails to find it. Maybe, the reason is that MinGW
>> version GStreamer SDK was built against has also another threading
>> model.
>>
>> So, there're two questions:
>> 1. What exception and threading model of MinGW version which GStreamer
>> SDK (2012.11 in particular) was built against?
>> 2. Is there any problems with building the SDK using latest MinGW stable build?
>>
>> I think, it would be nice to either point out build configuration on
>> gstreamer.com or prepare several builds with different exception
>> models. It seems to be so important information if one wouldn't build
>> applications with Visual Studio and prefer MinGW.
>
> Hi Alexey,
>
> Unfortunately you can't use Dwarf2 exception model on windows for
> 64-bit applications [1], so sjlj exception model must be used instead.
> As explained in the docs [2], if you want to use the SDK to build from
> sources other projects with Msys/MinGW, so should use the bootstrap
> command. It will download and setup the MinGW toolchain for you, the
> same exact toolchain use to build the SDK. We do not support building
> projects against the SDK with any other toolchain.
>
> Cheers,
> Andoni
>
> [1] http://sourceforge.net/apps/trac/mingw-w64/wiki/Exception%20Handling
Missing link here
[2] http://docs.gstreamer.com/display/GstSDK/Building+from+source+using+Cerbero
>>
>> Thanks,
>> Alexey Chernov
>> _______________________________________________
>> gstreamer-devel mailing list
>> gstreamer-devel at lists.freedesktop.org
>> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>
>
>
> --
> Andoni Morales Alastruey
>
> LongoMatch:The Digital Coach
> http://www.longomatch.ylatuya.es



-- 
Andoni Morales Alastruey

LongoMatch:The Digital Coach
http://www.longomatch.ylatuya.es