(Disclosure: I work for Arm, opinions are my own)

Author here. elfshaker itself does not have a dependency on any architecture to our knowledge. We support the architectures we have use of. Contributions to add missing support are welcome.

manyclangs provides binary pack files for aarch64 because that's what we have immediate use of. If elfshaker and manyclangs proves useful to people, I would love to see resource invested to make it more widely useful.

You can still run the manyclangs binaries on other architectures using qemu [0], with some performance cost, which may be tolerable depending on your use case.

[0] https://github.com/elfshaker/manyclangs/tree/main/docker-qem...