Merge branch 'vtk_init' into 'master'

[de] Init vtk modules

See merge request ogs/ogs!3564

(cherry picked from commit 6d663a4a)

d0a3aed5 [de] Init vtk modules.

Applications/DataExplorer/DataExplorer.cmake

@@ -22,6 +22,7 @@ set(APP_ICON ${SOURCE_DIR_REL}/scripts/packaging/ogs-de-icon.icns)
 
 # Create the executable
 add_executable(DataExplorer main.cpp ${SOURCES} ${UIS} ${APP_ICON} exe-icon.rc)
+target_compile_definitions(DataExplorer PUBLIC $<$<BOOL:${VTK_ADDED}>:VTK_VIA_CPM>)
 
 target_link_libraries(
     DataExplorer

Applications/DataExplorer/main.cpp

@@ -9,6 +9,15 @@
 #include "InfoLib/GitInfo.h"
 #include "VtkVis/VtkConsoleOutputWindow.h"
 
+// TODO: Replace this on VTK 9 upgrade, see
+// https://discourse.vtk.org/t/vtk-use-file/3645/2
+#if VTK_VIA_CPM
+#include <vtkAutoInit.h>
+VTK_MODULE_INIT(vtkInteractionStyle)
+VTK_MODULE_INIT(vtkRenderingFreeType)
+VTK_MODULE_INIT(vtkRenderingOpenGL2)
+#endif
+
 int main(int argc, char* argv[])
 {
     // needed to ensure appropriate OpenGL context is created for VTK rendering.