Ac31415

note: ‘std::optional’ is only available from C++17 onwards

5

Good day, I've tried to compile plankton as instructed but got the following error: `--- stderr: uuv_world_plugins In file included from /usr/include/ignition/math6/ignition/math.hh:30, from /usr/include/sdformat-9.4/sdf/Param.hh:33, from /usr/include/sdformat-9.4/sdf/Element.hh:28, from /usr/include/sdformat-9.4/sdf/Actor.hh:25, from /usr/include/sdformat-9.4/sdf/sdf.hh:2,...