How to use ScanContext module

[CharlieV5]

I have set option(ENABLE_SCAN_CONTEXT "Enable ScanContext Loop Detector" ON) and build this glim_ext code together with glim successfully. When I run glim_rosnode , the log said " [warning] Extension modules are enabled!! ", but I cannot see any log about ScanContext. I'm not sure ScanContext is working. Is there any setting to ensure the ScanContext module has been launched?

[tahakenar]

@CharlieV5 I also could not figure out how to run extensions. Stuck at the same step. Any suggestions? config_ext_path is derived correctly yet I do not see anything regarding whether libs are loaded or not.

[koide3]

I added a brief instruction to enable an extension module here.

[CharlieV5]

I added a brief instruction to enable an extension module here.

Thank you!