GStreamer SDK - link error since upgrading to latest version (2012.11Brahmaputra)

[philippe renon]

Here you go, verbose link log attached.




>________________________________
> De : Andoni Morales <ylatuya at gmail.com>
>À : philippe renon <philippe_renon at yahoo.fr> 
>Cc : Discussion of the development of and with GStreamer <gstreamer-devel at lists.freedesktop.org> 
>Envoyé le : Mardi 1 octobre 2013 16h01
>Objet : Re: GStreamer SDK - link error since upgrading to latest version (2012.11Brahmaputra)
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>2013/9/20 philippe renon <philippe_renon at yahoo.fr>
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>Hi,
>>
>>I am reviving this thread as things have moved a bit since the last post.
>>
>>To resume the issue at hand : I was happily developing with Qt and GStreamer SDK.
>>Then I upgraded to a more recent version of the GStreamer SDK and started hitting a link issue (on Windows...).
>>With the help of the community I came to understand that the issue was caused by a MinGW toolchain incompatibility concerning exceptions.
>>- the upgraded GStreamer SDK was compiled with SJLJ exceptions (prior version was using DWARF)
>>- Qt was compiled with DWARF exceptions
>>- It is not possible to mix the two models in the same compilation unit.
>>
>>At the time my hopes to solve this issue were boosted when I was pointed to a new release of Qt (5.0.1) that was compiled with SJLJ exceptions.
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>>Since then, the open
 source project I contribute to has switched to Qt 5.1.0, so I revisited the link issue.
>>But, unfortunately, that version of Qt switched back to DWARF...
>>The trigger for the switch was performance issues with SJLJ.
>>
>>The switch was announced and motivated here : http://lists.qt-project.org/pipermail/development/2013-April/010667.html
>>Additionaly, this page compares the exception models and arguments the choice made by Qt : http://qt-project.org/wiki/MinGW-64-bit
>>
>>Here is the failing link command:
>>
>>g++ -shared -mthreads -Wl,--out-implib,D:/Projects/OP5/build/openpilotgcs_debug/lib/openpilotgcs/libGST_libd.a -o ../../../lib/openpilotgcs/GST_libd.dll
>>debug/gst_global.o debug/videowidget.o debug/moc_videowidget.o
>>-lglu32 -lopengl32 -lgdi32 -luser32
>>-LD:/Projects/OP5/build/openpilotgcs_debug/lib/openpilotgcs -Ld:/gstreamer/1.0/x86/lib -lgobject-2.0 -lglib-2.0
 -lgstreamer-1.0
>>-Ld:/Projects/OpenPilotTools/qt-5.1.0/5.1.0/mingw48_32/lib -lQt5Testd -lQt5Guid -lQt5Cored
>>
>>debug/gst_global.o:gst_global.cpp:(.eh_frame$_ZN6QDebug6StreamD1Ev+0x13): undefined reference to `__gxx_personality_v0'
>>debug/gst_global.o:gst_global.cpp:(.eh_frame$_ZN6QDebugD1Ev+0x13): undefined reference to `__gxx_personality_v0'
>>debug/gst_global.o:gst_global.cpp:(.eh_frame$_ZN6QDebuglsEPKc+0x13): undefined reference to `__gxx_personality_v0'
>>debug/gst_global.o:gst_global.cpp:(.eh_frame+0x13): undefined reference to `__gxx_personality_v0'
>>debug/gst_global.o:gst_global.cpp:(.eh_frame$_ZN5QListI7QStringE6appendERKS0_+0x13): undefined reference to `__gxx_personality_v0'
>>debug/gst_global.o:gst_global.cpp:(.eh_frame$_ZN5QListI7QStringE9node_copyEPNS1_4NodeES3_S3_+0x13): more undefined references to `__gxx_personality_v0' follow
>>debug/videowidget.o: In function
 `ZN11VideoWidgetC2EP7QWidget':
>>d:\Projects\OP5\build\openpilotgcs_debug\src\libs\gst_lib/../../../../../ground/openpilotgcs/src/libs/gst_lib/videowidget.cpp:72: undefined reference to `_imp___ZN7QWidgetC2EPS_6QFlagsIN2Qt10WindowTypeEE'
>><snip>
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>Could you please paste the full  output of the link step with g++ -v to check which libraries it's using in the link? It seems that at some point it's pulling some wrong dependency (maybe because of -L ordering)
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>Cheers
>Andoni
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