Merge pull request #1 from lucasw/qt4and5

Support both qt5 (Kinetic) and qt4 (Jade)

CMakeLists.txt

@@ -17,9 +17,23 @@ include_directories(include
                     ${catkin_INCLUDE_DIRS}
                     ${CMAKE_CURRENT_BINARY_DIR})
 
-qt5_wrap_cpp(MOC_FILES include/${PROJECT_NAME}/ortho_view_controller.h)
+# Use the version that rviz used so they are compatible.
+if(rviz_QT_VERSION VERSION_LESS "5")
+  message(STATUS "Using Qt4 based on the rviz_QT_VERSION: ${rviz_QT_VERSION}")
+  find_package(Qt4 ${rviz_QT_VERSION} EXACT REQUIRED QtCore QtGui)
+  # pull in all required include dirs, define QT_LIBRARIES, etc.
+  include(${QT_USE_FILE})
+  qt4_wrap_cpp(MOC_FILES include/${PROJECT_NAME}/ortho_view_controller.h)
+else()
+  message(STATUS "Using Qt5 based on the rviz_QT_VERSION: ${rviz_QT_VERSION}")
+  find_package(Qt5 ${rviz_QT_VERSION} EXACT REQUIRED Core Widgets)
+  # make target_link_libraries(${QT_LIBRARIES}) pull in all required dependencies
+  set(QT_LIBRARIES Qt5::Widgets)
+  qt5_wrap_cpp(MOC_FILES include/${PROJECT_NAME}/ortho_view_controller.h)
+endif()
+
 add_library(${PROJECT_NAME} src/ortho_view_controller.cpp ${MOC_FILES})
-target_link_libraries(${PROJECT_NAME} ${catkin_LIBRARIES} Qt5::Core Qt5::Gui)
+target_link_libraries(${PROJECT_NAME} ${catkin_LIBRARIES} ${QT_LIBRARIES})
 set_target_properties(${PROJECT_NAME} PROPERTIES COMPILE_FLAGS "-std=c++11")
 
 # Install