Two questions about new module system

[ben.boeckel (Ben Boeckel (Kitware))]

@estan

With 9.0.0 it seems we no longer get that library? What should I link against to pick the OpenGL2 backend for context views?

It’s still there. Is it just disabled in your build?

@estan

CMake of our project finishes successfully, but VTK_INCLUDE_DIRS is now empty.

Yes, this is gone. Use the targets (VTK::CommonCore) instead.

@estan

Will the CMake machinery still add automatic compile flags like -DvtkRenderingContext2D_AUTOINIT="1(vtkRenderingContextOpenGL2)" , or must I do something manually with vtk_module_autoinit myself?

It is no longer automatic because that gave you one autoinit set per find_package. Now it is done per target. You should do:

target_link_libraries(my_vtk_using_lib ${visibility}VTK::CommonCore ${other_vtk_libs})
vtk_module_autoinit(TARGETS my_vtk_using_lib MODULES VTK::CommonCore ${other_vtk_libs})

The latter call generates the required -D flags for the module set but just for the targets listed.