[ros2 foxy] colcon build 编译报错 ament_cmake

--- stderr: originbot_msgs                                                                   
CMake Error at CMakeLists.txt:19 (find_package):
  By not providing "Findament_cmake.cmake" in CMAKE_MODULE_PATH this project
  has asked CMake to find a package configuration file provided by
  "ament_cmake", but CMake did not find one.

  Could not find a package configuration file provided by "ament_cmake" with
  any of the following names:

    ament_cmakeConfig.cmake
    ament_cmake-config.cmake

  Add the installation prefix of "ament_cmake" to CMAKE_PREFIX_PATH or set
  "ament_cmake_DIR" to a directory containing one of the above files.  If
  "ament_cmake" provides a separate development package or SDK, be sure it
  has been installed.

---
Failed   <<< originbot_msgs [1.01s, exited with code 1]
Aborted  <<< line_follower_model [1.09s]                      

Summary: 0 packages finished [5.66s]
  1 package failed: originbot_msgs
  1 package aborted: line_follower_model
  1 package had stderr output: originbot_msgs
  8 packages not processed
 

========================

解决方案：修改工作空间的读写权限

cd <your workspace>
 sudo chmod 777 -R .
 

参考：

https://github.com/ros2/ros2/issues/1236