Ubuntu使用CLion编译工程时报错

find_package(catkin REQUIRED COMPONENTS
  roscpp
  rospy
  std_msgs
  genmsg
)

按上面CMakeLists编译时报错：

CMake Error at CMakeLists.txt:6 (find_package):
  By not providing "Findcatkin.cmake" in CMAKE_MODULE_PATH this project has
  asked CMake to find a package configuration file provided by "catkin", but
  CMake did not find one.

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

    catkinConfig.cmake
    catkin-config.cmake

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

解决

提示找不到catkin,如果ROS正确安装,应该是ROS环境没有被正确加载。

1. 检查~/.bashrc文件

使用sudo gedit ~/.bashrc命令打开~/.bashrc文件，查看其中是否有：source /opt/ros/melodic/setup.bash和你当前工作空间的setup.bash这两行，因为每次打开一个终端会自动运行~/.bashrc文件，而这两行分别是用来加载ROS环境和当前工作空间环境的。

2. 检查CLion是否是用终端打开的

如果CLion是用快捷方式或是从边栏或是直接点击CMakeLists文件打开的，则不会运行终端，自然也不会运行~/.bashrc文件，所以CLion会找不到catkin。建议使用命令行打开CLion