I don't think the PX4 setup script should decide whether a user is to
use ccache or not. Anecdotally, I've heard from some in the dev team
that they are not using it themselves, so I don't think there is a good
basis to push it onto others.
That being said, we can of course still use ccache as part of the CI
builds nevertheless.
I usually called it using `source arch.sh`
but if it's executable it could also be called using `./arch.sh`
and that's also what's done for the ubuntu setup script.
Script failed for me with following error
PX4-Autopilot/Tools/setup/arch.sh: line 159: syntax error near unexpected token `else'
PX4-Autopilot/Tools/setup/arch.sh: line 159: ` else'
Seems like there is nothing to do in case of positive if case.
Changed code should maintain logic
* ubuntu.sh: fix space and capitalization
* Add setup script for Arch Linux
* arch.sh: remove numerous confirmations, added some base packages
* setup scripts: adjust messages according to review
Julian Oes
Matthias Grob
Mikołaj Grzybek