ROSTutorialsWritingPublisherSubscriber(c++)

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I have some questions when I go through this tutorial. When I finished 1.1 and 1.2, then in the 1.3 I try to change the content in the CMakeLists.txt, then it's supposed to create two executables, talker and listener, which by default will go into package directory of your devel space, located by default at ~/catkin_ws/devel/lib/share/, however there isn't share in lib and there are no executables.

Hello everyone, after I asked for some people's help finally I solved this problem, first of all, something was wrong in the tutorial that is there does not exist ~/catkin_ws/devel/lib/share/, instead we have devel/lib/beginner_tutorials (which is my package name). But before we get two executable in beginner_tutorials, the last thing we should do is to change some content in Cmakelists.txt, the Cmakelists.txt in the tutorial also has something wrong.
In the tutorial:

# %Tag(FULLTEXT)%
cmake_minimum_required(VERSION 2.8.3)
project(beginner_tutorials)

## Find catkin and any catkin packages
find_package(catkin REQUIRED COMPONENTS roscpp rospy std_msgs genmsg)

## Declare ROS messages and services
add_message_files(FILES Num.msg)
add_service_files(FILES AddTwoInts.srv)

## Generate added messages and services
generate_messages(DEPENDENCIES std_msgs)

## Declare a catkin package
catkin_package()

## Build talker and listener
include_directories(include ${catkin_INCLUDE_DIRS})

add_executable(talker src/talker.cpp)
target_link_libraries(talker ${catkin_LIBRARIES})
add_dependencies(talker beginner_tutorials_generate_messages_cpp)

add_executable(listener src/listener.cpp)
target_link_libraries(listener ${catkin_LIBRARIES})
add_dependencies(listener beginner_tutorials_generate_messages_cpp)

# %EndTag(FULLTEXT)%

we should comment out

add_message_files(FILES Num.msg)
add_service_files(FILES AddTwoInts.srv)

this two line, which means it should be like this: #add.......

if you don't do this, you will find something wrong when you try to use catkin_make