snapcraft plugin cannot find header files of catkin packages
I'm using catkin build to build a workspace which it does successfully
I've followed the tutorial on making ros snap packages and found some discrepancies when working with the snapcraft catkin plugin.
- the
catkin_packageslist doesn't just build the packages in the list. All packages are built. - where a package shares headers and libraries using the
catkin_package'macro, the headers are not found during the build by other packages that have dependencies on those files.
I found that these header files could be accessed if they were specified for installation, making me think that the snapcraft catkin plugin doesn't implement a devel space (note I only have a relatively vague knowledge of the details of the configuration of the catkin tool.)
So is there something I should be doing to get my building workspace to build successfully using snapcraft.
I don't know how snapcraft works exactly, but if it's anything like how regular Debian pkgs are built, then yes, all artefacts that you want to have appear in your snap would have to be
install()ed.It's good practice to always have
install()targets in yourCMakeLists.txtanyway.So that is the case. Our workspace installs are correct for proper runtime use. But it seems that snapcraft requires artefacts required for the build to be installed as well.
There is no distinction between these two ('runtime' vs 'install').
catkinjust does some tricks to make things work when you .... don't have
install()statements, but it's really that, tricks.Installing your files is the only proper way.
Indeed, you've got to have proper install rules for snapcraft to work. The tutorial says this as well, and walks you through adding them for the talker/listener tutorial.