[WIP] ros2 humble cmake error fix

[knorth55]

No description provided.

[peterdavidfagan]

Hi @knorth55,

Thanks for posting this fix.

I am looking to build the package for ROS rolling. I haven't looked too closely into this bug but I presume the current pr depends on changes you proposed in rosidl_python to be merged first?

[knorth55]

@peterdavidfagan yes, you are right.
im waiting that pr to be merged

ros2/rosidl_python#187

[peterdavidfagan]

Thanks for the confirmation on this @knorth55.

[berndpfrommer]

Why not move SoundMsgs into its own package (sound_play_msgs)? From what I understand that would work around the bug. Having messages in a separate package is recommended practice anyways.

[knorth55]

I dont want to do so because it cause the loss of backward compatibility.
Also, in terms of debian release, it causes a big issue when we have a new package like that at the core of ros package.

In addition, separating msg package is not written in REP, so it should not be forced to any packages.