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 | 1 | initial version |
The problem is most likely this:
-- Using PYTHON_EXECUTABLE: /usr/bin/python3
ROS Python packages are only installed for the default system-provided Python interpreter, which would be Python 2 on Ubuntu Xenial.
As Catkin (or really: CMake) detects Python 3 as the default interpreter, and catkin_pkg is not installed for that version, you get the error message you show.
You'll need to either install catkin_pkg for Python 3 (sudo apt install python3-catkin-pkg) or make the default system-interpreter Python 2 again or override which version of Python Catkin/CMake uses by setting -DPYTHON_VERSION=3.5 when invoking catkin_make.
If you require further information or assistance, I'd recommend searching this forum for Python 3 related problems with Catkin (or any of the ROS 1 packages) as there have been quite a nr of posts about that (use Google: no module named site:answers.ros.org).
| | 2 | No.2 Revision |
The problem is most likely this:
-- Using PYTHON_EXECUTABLE: /usr/bin/python3
ROS Python packages (or really: Debian/Ubuntu Python packages) are only installed for the default system-provided Python interpreter, which would be Python 2 on Ubuntu Xenial.
As Catkin (or really: CMake) detects Python 3 as the default interpreter, and catkin_pkg is not installed for that version, you get the error message you show.
You'll need to either install catkin_pkg for Python 3 (sudo apt install python3-catkin-pkg) or make the default system-interpreter Python 2 again or override which version of Python Catkin/CMake uses by setting -DPYTHON_VERSION=3.5 when invoking catkin_make.
If you require further information or assistance, I'd recommend searching this forum for Python 3 related problems with Catkin (or any of the ROS 1 packages) as there have been quite a nr of posts about that (use Google: no module named site:answers.ros.org).
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