Fixed lib flag error.

CMakeLists.txt

@@ -184,6 +184,7 @@ set(qgroundcontrolIncludes
     lib/QMapControl
     ${PROJECT_BINARY_DIR}
     )
+set (qgroundcontrolLibs)
 
 # dependency summary
 message(STATUS "=======================================")
@@ -200,30 +201,35 @@ endif (MAVLINK_FOUND)
 if (OPENSCENEGRAPH_FOUND)
     message(STATUS "\t\tOpenSceneGraph\tYES")
     list(APPEND qgroundcontrolIncludes ${OPENSCENEGRAPH_INCLUDE_DIRS})
+    list(APPEND qgroundcontrolLibs ${SDL_LIBRARY})
 else()
     message(STATUS "\t\tOpenSceneGraph\t\tNO")
 endif (OPENSCENEGRAPH_FOUND)
 if (QT4_FOUND)
     message(STATUS "\t\tQT4\t\tYES")
     list(APPEND qgroundcontrolIncludes ${QT_INCLUDE_DIRS})
+    list(APPEND qgroundcontrolLibs ${QT_LIBRARIES})
 else()
     message(STATUS "\t\tQT4\t\tNO")
 endif (QT4_FOUND)
 if (PHONON_FOUND)
     message(STATUS "\t\tPHONON\t\tYES")
     list(APPEND qgroundcontrolIncludes ${PHONON_INCLUDE_DIR}/phonon)
+    list(APPEND qgroundcontrolLibs ${PHONON_LIBS})
 else()
     message(STATUS "\t\tPHONON\t\tNO")
 endif (PHONON_FOUND)
 if (SDL_FOUND)
     message(STATUS "\t\tSDL\t\tYES")
     list(APPEND qgroundcontrolIncludes ${SDL_INCLUDE_DIR})
+    list(APPEND qgroundcontrolLibs ${SDL_LIBRARY})
 else()
     message(STATUS "\t\tSDL\t\tNO")
 endif (SDL_FOUND)
 if (OPENGL_FOUND)
     message(STATUS "\t\tOPENGL\t\tYES")
     list(APPEND qgroundcontrolIncludes ${OPENGL_INCLUDE_DIR})
+    list(APPEND qgroundcontrolLibs ${OPENGL_LIBRARIES})
 else()
     message(STATUS "\t\tOPENGL\t\tNO")
 endif (OPENGL_FOUND)
@@ -233,6 +239,7 @@ if (UNIX)
     if (FLITE_FOUND)
         message(STATUS "\t\tFLITE\t\tYES")
         list(APPEND qgroundcontrolIncludes ${FLITE_INCLUDE_DIR})
+        list(APPEND qgroundcontrolLibs ${FLITE_LIBRARIES})
     else()
         message(STATUS "\t\tFLITE\t\tNO")
     endif (FLITE_FOUND)