Build fail with ubuntu 20.04 ros2 foxy

[grosserding]

Hello,

Thank you for your amazing work! I have tested the binary installation of rtabmap_ros on my Ubuntu 20.04 (ROS2 Foxy), and it works well. However, when I attempt to compile from source I failed, ive tried these combinations of branches:
rtabmap: master, rtabmap_ros: ros2 — failed.
rtabmap: foxy_devel, rtabmap_ros: foxy_devel — failed.
These issues occur in the critical modules rtabmap_slam and rtabmap_sync, so I cannot bypass them. Does rtabmap_ros still support ROS2 Foxy? If not, since it worked well with binary version rtabmap_foxy, i wonder which commits are used for these two libraries in the binary version?

Best regards.