added cmake support

[berndpfrommer]

added support for building under cmake

[foehnx]

Thanks a lot, this is nice.
I quickly tested it and seems to work with CMake (3.16.3), gcc (9.3.0) and nvcc (11.2.67).

It would be nice if you could add quick building/installing instructions to the README, and how it can be used/included this way in other projects.

Have you run a runtime comparison to check if the compiler flags differ and/or have impact with respect to the makefile-built version?

[berndpfrommer]

Thanks for reviewing.
I have not done any runtime performance testing, nor verified that the compiler flags are identical. I added the cmake support to use vilib from within a ROS2 wrapper package, and was very happy with the performance I got there, so I stopped at that.

Traveling right now with a laptop that has no nvidia card. Will do the testing and make the changes you requested when returning in about 2 weeks.

[foehnx]

awesome, thank you.

If your ROS2 project is open source, feel free to mention it in the README and link to it, if you like.

[berndpfrommer]

So far I had only used the cmake package in my ROS2 package and it worked fine there. When creating a stand-alone package I discovered some transitive dependencies were not propagated correctly.
This has now been fixed. Will squash the commits and push again.

Here is a performance comparison between original and cmake library tests
vilib_orig.txt
vilib_cmake.txt

[berndpfrommer]

I tested once more on Ubuntu 18.04 (it compiles, but not run tested) and 20.04 (compiles and run tested).
A section with instructions on how to use has been added to the README file.
Please have a look at it again.

[foehnx]

Looks good to me!
Thanks a lot for your contribution!