Use of system libraries and github workflows

[araven]

Contribution to build this project with system libraries on Ubuntu focal (20.04) or optional downloads.

[halbux]

Hi. Thank you for this contribution! Is it part of the process of packging the lib to make it available in the ubuntu/debian repos for use in Kicad?

[araven]

Hi. Thank you for this contribution! Is it part of the process of packging the lib to make it available in the ubuntu/debian repos for use in Kicad?

Not really. First this is to avoid the lengthy compilation of the downloaded libraries and second to get the benefit of the CI/CD features available from GitHub. I think these commits don’t collide with the actual way of compiling. This just opens extra options.

[halbux]

Ok. Is it ok for you to leave the pull request open? This will impact the way I usually compile the code on an everyday basis and the scripts I have here, so I'd prefer not to merge it for now, although I am grateful for this PR.

[nimish]

this is basically required to get sparselizard to work cleanly -- @halbux it'd be best to have this as the default and then you could override cmake w/ your custom library and include paths in a toolchain config