[draft] add ARM64 support to Linux CI

[gmesm]

Add ARM64 support to Linux CI

Changes

Makes required modifications to CI scripting and cmake files to properly build on ARM64 linux target systems. Ubuntu 24.04 ARM64 is used due to this being the minimum supported release by QT6 https://doc.qt.io/qt-6/supported-platforms.html for ARM64 Linux (before you ask, no 22.04 is not good enough, the builds of QT6 are made on 24.04 and the dependencies cannot be satisfied on 24.04).

This pull request is marked as a draft until the upstream dependency exiv2 cuts a new release with the following PR merged Exiv2/exiv2#3143 and install-qt-action cuts a new release with the following PR merged jurplel/install-qt-action#273

Checklist:

• Review Contribution Guidelines.
• Review Code of Conduct.
• I have tested my changes.

Related Issue

#9856

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[gmesm]

Rebase on master, no longer blocked by Exiv2/exiv2#3143 due to qgroundcontrol switching to always build this dependency from source. If in the future you want to switch back to prebuilds, refer to the original commit hash.

[HTRamsey]

I've been very tempted to fork the qt install action. It doesn't see the activity I'd like. Or we could just use aqtinstall directly.

[gmesm]

Or we could just use aqtinstall directly.

That seems reasonable. For the Linux CI it would just involve installing aqt (sudo pipx install aqtinstall) and then running aqt with the appropriate options. The only additional thing you would probably need to do would be add the tools to the PATH like install-qt-action does.

[HTRamsey]

could probably just use the existing script already being used to install Qt in Docker. But then we'd have to accommodate for all the other build systems. Maybe that's an excuse to actually finish those other setup scripts though.