where does {catkin_LIBRARIES} refer to, in package [closed]

edit

hi guys, i am learning tutorial catkinCMakeLists.txt , but i only understand the variable ${PROJECT_NAME}.

there are still lots of variables i do not understand or sure about it, like:

where do

${catkin_LIBRARIES} (is that ~/work_space/src/package_name/include ??)

${CATKIN_DEVEL_PREFIX}

${CATKIN_PACKAGE_PYTHON_DESTINATION}

${Boost_INCLUDE_DIRS}

${catkin_INCLUDE_DIRS}

${${PROJECT_NAME}_SRCS}) (is that ~/work_space/src/package_name/src ??)

${${PROJECT_NAME}_EXPORTED_TARGETS}

${CATKIN_PACKAGE_LIB_DESTINATION}

${CATKIN_PACKAGE_BIN_DESTINATION}

${CATKIN_PACKAGE_PYTHON_DESTINATION}

${CATKIN_PACKAGE_INCLUDE_DESTINATION}

${CATKIN_GLOBAL_INCLUDE_DESTINATION}

${CATKIN_PACKAGE_SHARE_DESTINATION}

locate in

and catkin_package( INCLUDE_DIRS include (is that ~/work_space/src/package_name/include ??)

LIBRARIES ${PROJECT_NAME} (??? where it is???)

CATKIN_DEPENDS roscpp (haha i understand this, it's refer to location of ros package, like roscpp is /opt/ros/indigo/share/roscpp)

DEPENDS eigen opencv) (should cmake projects under the path ~/work_space/src, before i use find_package marco ?)