VTK_MODULE_INIT in 9.0.1 ?

Leaving out all of the VTK_MODULE_INITs leads to run time errors like

ImportError: /home/langer/lib/liboof3dcommon.so: undefined symbol: _ZN15vtkExtractCells8GetMTimeEv

The program compiles and links without errors, but maybe I need to link with different libraries? The link line looks like

x86_64-linux-gnu-g++ -pthread -shared ... -fPIC -std=c++11 ... -L/home/langer/lib \
[... many .o files ...]
-lvtkCommonCore-9.0 -lvtkCommonDataModel-9.0 ... --lvtkFiltersExtraction-9.0 ...

I used nm to search for the library containing vtkExtractCells and it is included in the link arguments.