[ros-users] Problem with tutorial 11: Writing a Simple Publisher and Subscriber (C++)

[#TAN ZHI PING#]

 Hi to all,

I tried to create an additional file, test.cpp, and wrote another executable line in CMakeList.txt as shown below:

rosbuild_add_executable(talker src/talker.cpp)
rosbuild_add_executable(listener src/listener.cpp)
rosbuild_add_executable(test src/test.cpp)

-----------------------------------------------------------test.cpp ------------------------------------------------
#include <ros/console.h>

int main(int argc, char **argv)
  ros::init(argc, argv, "test");
  ros::NodeHandle n;

  int count = 0;
  while (ros::ok())
  {
    ROS_DEBUG("Hello %s", "World");
    ROS_DEBUG_STREAM("Hello " << "World");
  }
}
-----------------------------------------------------------End ------------------------------------------------

But according to the Build output, there is no build target test. Why is that so?

-----------------------------------------------------------Build Output ---------------------------------------------------
mkdir -p bin
cd build && cmake -Wdev -DCMAKE_TOOLCHAIN_FILE=`rospack find rosbuild`/rostoolchain.cmake  ..
[rosbuild] Building package beginner_tutorials
[rosbuild] Including /opt/ros/cturtle/ros/core/rospy/cmake/rospy.cmake
[rosbuild] Including /opt/ros/cturtle/ros/core/roslisp/cmake/roslisp.cmake
[rosbuild] Including /opt/ros/cturtle/ros/core/roscpp/cmake/roscpp.cmake
-- Configuring done
-- Generating done
-- Build files have been written to: /home/snoopy/beginner_tutorials/build
cd build && make
make[1]: Entering directory `/home/snoopy/beginner_tutorials/build'
make[2]: Entering directory `/home/snoopy/beginner_tutorials/build'
make[3]: Entering directory `/home/snoopy/beginner_tutorials/build'
make[3]: Leaving directory `/home/snoopy/beginner_tutorials/build'
[  0%] Built target rospack_genmsg_libexe
make[3]: Entering directory `/home/snoopy/beginner_tutorials/build'
make[3]: Leaving directory `/home/snoopy/beginner_tutorials/build'
[  0%] Built target rosbuild_precompile
make[3]: Entering directory `/home/snoopy/beginner_tutorials/build'
make[3]: Leaving directory `/home/snoopy/beginner_tutorials/build'
[ 50%] Built target listener
make[3]: Entering directory `/home/snoopy/beginner_tutorials/build'
make[3]: Leaving directory `/home/snoopy/beginner_tutorials/build'
[100%] Built target talker
make[2]: Leaving directory `/home/snoopy/beginner_tutorials/build'
make[1]: Leaving directory `/home/snoopy/beginner_tutorials/build'
snoopy at ubuntu:~/beginner_tutorials$
--------------------------------------------------------- End ------------------------------------------------------

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