[VtkVis] Always build statically.

Applications/DataExplorer/DataView/CMakeLists.txt

@@ -121,7 +121,7 @@ if(GEOTIFF_FOUND)
     include_directories(${GEOTIFF_INCLUDE_DIRS})
 endif() # GEOTIFF_FOUND
 
-ogs_add_library(QtDataView ${SOURCES} ${HEADERS} ${UIS})
+ogs_add_library(QtDataView STATIC ${SOURCES} ${HEADERS} ${UIS})
 
 target_link_libraries(QtDataView
                       PUBLIC GeoLib

Applications/DataExplorer/VtkVis/CMakeLists.txt

@@ -128,7 +128,7 @@ include_directories(${CMAKE_CURRENT_SOURCE_DIR}
                     ${GUI_SOURCE_DIR_REL}/DataView
                     ${GUI_SOURCE_DIR_REL}/VtkModules/Qt)
 
-ogs_add_library(VtkVis ${SOURCES} ${HEADERS} ${UIS})
+ogs_add_library(VtkVis STATIC ${SOURCES} ${HEADERS} ${UIS})
 
 if(GEOTIFF_FOUND)
     include_directories(${GEOTIFF_INCLUDE_DIRS})