ros编译出错

[1695972035]

刚开始学这个东西 这个编译报错该怎么处理啊 救救

[1695972035]

报错信息是：**CMake Error at /opt/ros/melodic/share/catkin/cmake/catkinConfig.cmake:83 (find_package):
Could not find a package configuration file provided by "std_msg" with any
of the following names:

std_msgConfig.cmake
std_msg-config.cmake**

[小鱼]

@1695972035 std_msgs