Debugging rtapi_app using Eclipse GDB

Greetings All,

I followed the steps specified in the below webpage to debug rtapi_app
using Eclipse GDB.

wiki.linuxcnc.org/cgi-bin/wiki.pl?Eclipse

But I got stuck at a point where the debugger breaks when there is a break
point. It says "No source file named canterp.cc". I tried even including
compilation directory path. It doesn't seem to work.

Can someone help me with this?

Thanks,
Lakshman

Hi,

I see you put this on the developers list too.

Yishin Li who wrote the wiki can mostly be found on the Machinekit forum.
He is from ariasrobo.com, so it would be well worth your contacting him about your robotic arm project.

At this stage you need to pick a horse and ride that one only. Machinekit is greatly changed code wise in some aspects from Linuxcnc and rtapi_app is one file that has changed.

I suspect you are trying to find the source of the error originating at line :339 of rtapi_app, when you run canterp. I think this is just an error printing function, you need to look further back.

There is a guide to debugging rt apps in the Machinekit docs, but if you can do it with debug print outs spread through the code, you are well advised to try that, it is a lot easier

machinekit-docs.readthedocs.org/en/lates...gging-RT-components/

also search the forum posts for 'Debugging RT'
groups.google.com/forum/#!msg/machinekit...MZu5mKA/hCV2OSr4g-QJ

regards

PS.

If your error is not an RT one, which is primarily what the Machinekit doc is about,
there is a lot to be said for compiling with debug options on in the compiler for posix only
(or rt-preempt if you need some rt threads for what you are trying to debug)

It makes no sense whatsoever to build for rtai unless it is that build that is failing, you
just increase the level of complexity.

If I guess what you are trying to do correctly, you are just trying to trace the error flow, to work out what specifically is throwing the error, not actually find a bug.

regards