[0.017s] Invoking command in '/home/sxj/ros2_ws/build/example_topic': CMAKE_PREFIX_PATH=/opt/ros/foxy /usr/bin/cmake /home/sxj/ros2_ws/src/example_topic -DCMAKE_INSTALL_PREFIX=/home/sxj/ros2_ws/install/example_topic
[0.133s] -- The C compiler identification is GNU 9.4.0
[0.221s] -- The CXX compiler identification is GNU 9.4.0
[0.226s] -- Check for working C compiler: /usr/bin/cc
[0.316s] -- Check for working C compiler: /usr/bin/cc -- works
[0.317s] -- Detecting C compiler ABI info
[0.401s] -- Detecting C compiler ABI info - done
[0.410s] -- Detecting C compile features
[0.411s] -- Detecting C compile features - done
[0.413s] -- Check for working CXX compiler: /usr/bin/c++
[0.505s] -- Check for working CXX compiler: /usr/bin/c++ -- works
[0.506s] -- Detecting CXX compiler ABI info
[0.601s] -- Detecting CXX compiler ABI info - done
[0.610s] -- Detecting CXX compile features
[0.610s] -- Detecting CXX compile features - done
[0.614s] -- Found ament_cmake: 0.9.12 (/opt/ros/foxy/share/ament_cmake/cmake)
[0.638s] -- Found PythonInterp: /usr/bin/python3 (found suitable version "3.8.10", minimum required is "3") 
[0.638s] -- Using PYTHON_EXECUTABLE: /usr/bin/python3
[0.806s] -- Found rclcpp: 2.4.3 (/opt/ros/foxy/share/rclcpp/cmake)
[0.858s] -- Using all available rosidl_typesupport_c: rosidl_typesupport_fastrtps_c;rosidl_typesupport_introspection_c
[0.863s] -- Found rosidl_adapter: 1.3.1 (/opt/ros/foxy/share/rosidl_adapter/cmake)
[0.981s] -- Found OpenSSL: /usr/lib/x86_64-linux-gnu/libcrypto.so (found version "1.1.1f")  
[1.010s] -- Found FastRTPS: /opt/ros/foxy/include  
[1.087s] -- Using all available rosidl_typesupport_cpp: rosidl_typesupport_fastrtps_cpp;rosidl_typesupport_introspection_cpp
[1.138s] -- Found rmw_implementation_cmake: 1.0.4 (/opt/ros/foxy/share/rmw_implementation_cmake/cmake)
[1.139s] -- Using RMW implementation 'rmw_fastrtps_cpp' as default
[1.140s] -- Looking for pthread.h
[1.229s] -- Looking for pthread.h - found
[1.229s] -- Performing Test CMAKE_HAVE_LIBC_PTHREAD
[1.319s] -- Performing Test CMAKE_HAVE_LIBC_PTHREAD - Failed
[1.319s] -- Looking for pthread_create in pthreads
[1.397s] -- Looking for pthread_create in pthreads - not found
[1.398s] -- Looking for pthread_create in pthread
[1.485s] -- Looking for pthread_create in pthread - found
[1.486s] -- Found Threads: TRUE  
[1.672s] -- Configuring done
[1.680s] -- Generating done
[1.682s] -- Build files have been written to: /home/sxj/ros2_ws/build/example_topic
[1.691s] Invoked command in '/home/sxj/ros2_ws/build/example_topic' returned '0': CMAKE_PREFIX_PATH=/opt/ros/foxy /usr/bin/cmake /home/sxj/ros2_ws/src/example_topic -DCMAKE_INSTALL_PREFIX=/home/sxj/ros2_ws/install/example_topic
[1.694s] Invoking command in '/home/sxj/ros2_ws/build/example_topic': CMAKE_PREFIX_PATH=/opt/ros/foxy /usr/bin/cmake --build /home/sxj/ros2_ws/build/example_topic -- -j8 -l8
[1.747s] Scanning dependencies of target sub_node
[1.747s] Scanning dependencies of target pub_node
[1.808s] [ 50%] Building CXX object CMakeFiles/pub_node.dir/src/pub_node.cpp.o
[1.808s] [ 50%] Building CXX object CMakeFiles/sub_node.dir/src/sub_node.cpp.o
[6.356s] [ 75%] Linking CXX executable pub_node
[6.559s] [ 75%] Built target pub_node
[8.049s] [100%] Linking CXX executable sub_node
[8.303s] [100%] Built target sub_node
[8.317s] Invoked command in '/home/sxj/ros2_ws/build/example_topic' returned '0': CMAKE_PREFIX_PATH=/opt/ros/foxy /usr/bin/cmake --build /home/sxj/ros2_ws/build/example_topic -- -j8 -l8
[8.379s] Invoking command in '/home/sxj/ros2_ws/build/example_topic': CMAKE_PREFIX_PATH=/opt/ros/foxy /usr/bin/cmake --install /home/sxj/ros2_ws/build/example_topic
[8.389s] -- Install configuration: ""
[8.389s] -- Installing: /home/sxj/ros2_ws/install/example_topic/lib/example_topic/pub_node
[8.390s] -- Set runtime path of "/home/sxj/ros2_ws/install/example_topic/lib/example_topic/pub_node" to ""
[8.390s] -- Installing: /home/sxj/ros2_ws/install/example_topic/lib/example_topic/sub_node
[8.392s] -- Set runtime path of "/home/sxj/ros2_ws/install/example_topic/lib/example_topic/sub_node" to ""
[8.392s] -- Installing: /home/sxj/ros2_ws/install/example_topic/include/example_topic/
[8.392s] -- Installing: /home/sxj/ros2_ws/install/example_topic/share/example_topic//launch
[8.393s] -- Installing: /home/sxj/ros2_ws/install/example_topic/share/example_topic//launch/talker_listener_launch.py
[8.393s] -- Installing: /home/sxj/ros2_ws/install/example_topic/share/example_topic//config
[8.393s] -- Installing: /home/sxj/ros2_ws/install/example_topic/share/ament_index/resource_index/package_run_dependencies/example_topic
[8.394s] -- Installing: /home/sxj/ros2_ws/install/example_topic/share/ament_index/resource_index/parent_prefix_path/example_topic
[8.394s] -- Installing: /home/sxj/ros2_ws/install/example_topic/share/example_topic/environment/ament_prefix_path.sh
[8.395s] -- Installing: /home/sxj/ros2_ws/install/example_topic/share/example_topic/environment/ament_prefix_path.dsv
[8.395s] -- Installing: /home/sxj/ros2_ws/install/example_topic/share/example_topic/environment/path.sh
[8.395s] -- Installing: /home/sxj/ros2_ws/install/example_topic/share/example_topic/environment/path.dsv
[8.395s] -- Installing: /home/sxj/ros2_ws/install/example_topic/share/example_topic/local_setup.bash
[8.395s] -- Installing: /home/sxj/ros2_ws/install/example_topic/share/example_topic/local_setup.sh
[8.395s] -- Installing: /home/sxj/ros2_ws/install/example_topic/share/example_topic/local_setup.zsh
[8.396s] -- Installing: /home/sxj/ros2_ws/install/example_topic/share/example_topic/local_setup.dsv
[8.396s] -- Installing: /home/sxj/ros2_ws/install/example_topic/share/example_topic/package.dsv
[8.396s] -- Installing: /home/sxj/ros2_ws/install/example_topic/share/ament_index/resource_index/packages/example_topic
[8.396s] -- Installing: /home/sxj/ros2_ws/install/example_topic/share/example_topic/cmake/example_topicConfig.cmake
[8.396s] -- Installing: /home/sxj/ros2_ws/install/example_topic/share/example_topic/cmake/example_topicConfig-version.cmake
[8.396s] -- Installing: /home/sxj/ros2_ws/install/example_topic/share/example_topic/package.xml
[8.399s] Invoked command in '/home/sxj/ros2_ws/build/example_topic' returned '0': CMAKE_PREFIX_PATH=/opt/ros/foxy /usr/bin/cmake --install /home/sxj/ros2_ws/build/example_topic