1、在ros编译过程中出现如下错误
– Using CATKIN_DEVEL_PREFIX: /home/×××/opject/AIRL/yujin_ocs_ws/devel
– Using CMAKE_PREFIX_PATH: /opt/ros/noetic
– This workspace overlays: /opt/ros/noetic
– Found PythonInterp: /home/×××/anaconda3/bin/python3 (found suitable version “3.10.13”, minimum required is “3”)
– Using PYTHON_EXECUTABLE: /home/×××/anaconda3/bin/python3
– Using Debian Python package layout
– Could NOT find PY_em (missing: PY_EM)
CMake Error at /opt/ros/noetic/share/catkin/cmake/empy.cmake:30 (message):
Unable to find either executable ‘empy’ or Python module ‘em’… try
installing the package ‘python3-empy’
Call Stack (most recent call first):
/opt/ros/noetic/share/catkin/cmake/all.cmake:164 (include)
/opt/ros/noetic/share/catkin/cmake/catkinConfig.cmake:20 (include)
CMakeLists.txt:58 (find_package)
2、原因：python路径找错了，使用了conda虚拟环境中的路径了
3、解决：使用下面命令就可以解决
catkin_make -DPYTHON_EXECUTABLE=/usr/bin/python3