Compiling OpenCV: VTK Not Found on Ubuntu 16.04 LTS

When installing OpenCV:

/usr/bin/vtk not found

libvtkRenderingPythonTkWidgets.so not found

/usr/bin/vtk not found

libvtkRenderingPythonTkWidgets.so not found

Do:

sudo apt install libvtk6-dev python-vtk6

Then:

sudo update-alternatives --install /usr/bin/vtk vtk /usr/bin/vtk6 10

sudo ln -s /usr/lib/python2.7/dist-packages/vtk/libvtkRenderingPythonTkWidgets.x86_64-linux-gnu.so /usr/lib/x86_64-linux-gnu/libvtkRenderingPythonTkWidgets.so

The file /usr/lib/x86_64-linux-gnu/libvtkRenderingPythonTkWidgets.so is also not found but both of these appear to be vtk6-related bugs. The above fixes the vtk dependency but the libvtkRenderingPythonTkWidgets.so only seems to exist in /usr/lib/python2.7/dist-packages/vtk. Creating a symlink with the following does the trick for this one~

参考：

https://github.com/autowarefoundation/autoware/issues/795