Unable to build on aarch64 architecture.

Unable to build on aarch64 architecture.

i.e.) by Raspberry Pi OS.

pi@r10:~ $ git clone https://gitlab.freedesktop.org/gstreamer/cerbero.git
Cloning into 'cerbero'...
remote: Enumerating objects: 37087, done.
remote: Counting objects: 100% (902/902), done.
remote: Compressing objects: 100% (335/335), done.
remote: Total 37087 (delta 629), reused 820 (delta 567), pack-reused 36185
Receiving objects: 100% (37087/37087), 8.24 MiB | 180.00 KiB/s, done.
Resolving deltas: 100% (28689/28689), done.
pi@r10:~ $ cd cerbero/
pi@r10:~/cerbero $ ./cerbero-uninstalled bootstrap
Traceback (most recent call last):
  File "<string>", line 19, in <module>
  File "/home/pi/cerbero/cerbero/main.py", line 19, in <module>
    from cerbero import hacks
  File "/home/pi/cerbero/cerbero/hacks.py", line 99, in <module>
    from cerbero.utils.shell import new_call as shell_call
  File "/home/pi/cerbero/cerbero/utils/shell.py", line 50, in <module>
    info = system_info()
  File "/home/pi/cerbero/cerbero/utils/__init__.py", line 171, in system_info
    raise FatalError(_("Architecture %s not supported") % arch)
cerbero.errors.FatalError: Fatal Error: Architecture aarch64 not supported
pi@r10:~/cerbero $ uname -a
Linux r10 5.15.32-v8+ #1538 SMP PREEMPT Thu Mar 31 19:40:39 BST 2022 aarch64 GNU/Linux
pi@r10:~/cerbero $ uname -m
aarch64