Catkin plugin¶

The Catkin plugin is used to build ROS 1 parts.

In Snapcraft 8, the Catkin plugin can be used alongside the ROS 1 extension to build core20 snaps.

Keys¶

This plugin provides the following unique keys for core20 snaps.

Type: list of strings

The Catkin packages to build. If unset, all packages in the workspace will be built.

Type: list of strings

The Catkin packages to ignore. These packages will not be built or installed. If unset or set to an empty list, no packages will be ignored.

Type: list of strings

The arguments to pass to CMake.

For core20 snaps, this plugin installs python3-rosdep, rospack-tools, ros-noetic-catkin, and any other ROS packages declared in the part.

The Catkin plugin is designed to work alongside the ROS 1 extension.

For core20 snaps that don’t use this extension, the ROS_DISTRO environment variable must be set to noetic with the build-environment key.

During the build step, the plugin performs the following actions:

Source catkin workspaces in any declared build snaps, stage snaps, and on the host system.
Install any missing project dependencies with rosdep.
Run catkin_make_isolated to build each item in the sourced workspaces, taking into account any plugin-specific keys declared in the part.

See Craft an ROS 1 app for an example of a snap that uses the Catkin plugin.