hi all. I am following a book Learning ROS for Robotics Programming and I am stuck in services section. page 58 if someone have this book. I says to edit CMakeList.txt and add some lines I added those lines.

cmake_minimum_required(VERSION 3.0.2) project(chapter2_tutorials)

Compile as C++11, supported in ROS Kinetic and newer

add_compile_options(-std=c++11)

Find catkin macros and libraries

if COMPONENTS list like find_package(catkin REQUIRED COMPONENTS xyz)

is used, also find other catkin packages

find_package(catkin REQUIRED COMPONENTS roscpp rospy std_msgs )

System dependencies are found with CMake's conventions

find_package(Boost REQUIRED COMPONENTS system)

Uncomment this if the package has a setup.py. This macro ensures

modules and global scripts declared therein get installed

See http://ros.org/doc/api/catkin/html/us...

catkin_python_setup()

#

Declare ROS messages, services and actions

#

To declare and build messages, services or actions from within this

package, follow these steps:

* Let MSG_DEP_SET be the set of packages whose message types you use in

your messages/services/actions (e.g. std_msgs, actionlib_msgs, ...).

* In the file package.xml:

* add a build_depend tag for "message_generation"

* add a build_depend and a exec_depend tag for each package in MSG_DEP_SET

* If MSG_DEP_SET isn't empty the following dependency has been pulled in

but can be declared for certainty nonetheless:

* add a exec_depend tag for "message_runtime"

* In this file (CMakeLists.txt):

* add "message_generation" and every package in MSG_DEP_SET to

find_package(catkin REQUIRED COMPONENTS ...)

* add "message_runtime" and every package in MSG_DEP_SET to

catkin_package(CATKIN_DEPENDS ...)

* uncomment the add_*_files sections below as needed

and list every .msg/.srv/.action file to be processed

* uncomment the generate_messages entry below

* add every package in MSG_DEP_SET to generate_messages(DEPENDENCIES ...)

Generate messages in the 'msg' folder

add_message_files(

FILES

Message1.msg

Message2.msg

)

Generate services in the 'srv' folder

add_service_files(FILES chapter2_srv1.srv) #this is the line I uncommented and added chapter2_srv1.srv

Generate actions in the 'action' folder

add_action_files(

FILES

Action1.action

Action2.action

)

Generate added messages and services with any dependencies listed here

generate_messages(DEPENDENCIES std_msgs)

#

Declare ROS dynamic reconfigure parameters

#

To declare and build dynamic reconfigure parameters within this

package, follow these steps:

* In the file package.xml:

* add a build_depend and a exec_depend tag for "dynamic_reconfigure"

* In this file (CMakeLists.txt):

* add "dynamic_reconfigure" to

find_package(catkin REQUIRED COMPONENTS ...)

* uncomment the "generate_dynamic_reconfigure_options" section below

and list every .cfg file to be processed

Generate dynamic reconfigure parameters in the 'cfg' folder

generate_dynamic_reconfigure_options(

cfg/DynReconf1.cfg

cfg/DynReconf2.cfg

)

#

catkin specific configuration

#

The catkin_package macro generates cmake config files for your package

Declare things to be passed to dependent projects

INCLUDE_DIRS: uncomment this if your package contains header files

LIBRARIES: libraries you create in this project that dependent projects also need

CATKIN_DEPENDS: catkin_packages dependent projects also need

DEPENDS: system dependencies of this project that dependent projects also need

catkin_package(

INCLUDE_DIRS include

LIBRARIES chapter2_tutorials

CATKIN_DEPENDS roscpp rospy std_msgs

DEPENDS system_lib

)

#

Build

#

Specify additional locations of header files

Your package locations should be listed before other locations

include_directories(

include

${catkin_INCLUDE_DIRS} )

Declare a ...