[vtkusers] VTK build fails to link to swscale

[David Partyka]

Hi John,

If you look in the CMakeCache.txt of your build tree there should be an
entry FFMPEG_LIBRARIES. What does it contain?

On Wed, Aug 31, 2011 at 4:07 PM, John Haiducek <jhaiduce at gmail.com> wrote:

> When I build VTK I get errors like this:
>
> Linking CXX executable ../../../../bin/QVTKCxxTests
> ../../../../bin/libvtkIO.so.5.2.1: undefined reference to `sws_freeContext'
> ../../../../bin/libvtkIO.so.5.2.1: undefined reference to `sws_scale'
> ../../../../bin/libvtkIO.so.5.2.1: undefined reference to
> `sws_getCachedContext'
> collect2: ld returned 1 exit status
> make[2]: *** [bin/QVTKCxxTests] Error 1
> make[1]: *** [GUISupport/Qt/Testing/Cxx/CMakeFiles/QVTKCxxTests.dir/all]
> Error 2
> make: *** [all] Error 2
>
> The error goes away when I add -lswscale to my CXXFLAGS, but surely
> there's a better way to fix it?
>
> John Haiducek
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