Fixed linker errors.

Applications/CLI/CMakeLists.txt

@@ -16,7 +16,13 @@ target_link_libraries(ogs
 )
 
 if(OGS_BUILD_GUI)
-	target_link_libraries(ogs QtDataView VtkVis vtkInteractionStyle)
+	target_link_libraries(ogs QtDataView VtkVis vtkInteractionStyle Qt4::QtCore Qt4::QtGui Qt4::QtXml Qt4::QtNetwork)
+	if(CMAKE_CROSSCOMPILING)
+		target_link_libraries(ogs
+			${QT_XML_DEPS_LIBRARIES}
+			${QT_GUI_DEPS_LIBRARIES}
+			${QT_NETWORK_DEPS_LIBRARIES})
+	endif()
 endif()
 
 ADD_CATALYST_DEPENDENCY(ogs)

Applications/DataExplorer/DataExplorer.cmake

@@ -93,6 +93,7 @@ target_link_libraries(DataExplorer
 	${CATALYST_LIBRARIES}
 	zlib
 	shp
+	Threads::Threads
 )
 
 if(CMAKE_CROSSCOMPILING)