BUILD_TESTING no longer an option?

Not sure if this is related, but with paraview 5.8 now getting some build failures. As per paraview 5.7 and earlier I’ve disabled testing with this

-DBUILD_TESTING=OFF

Nonetheless, the testing parts attempt to build, and after some build time things bomb out with an error:

fatal error: ../../ParaView-v5.8.0/ThirdParty/QtTesting/vtkqttesting/pq3DViewEventPlayer.h: No such file or directory

I used ccmake to inspect which variables are actually available. There is a whole myriad of paraview and vtk testing variables. I really hope that I don’t need to disable each and every one of them.