See ticket:
https://gitlab.com/freepascal.org/fpc/source/-/issues/39295

It was closed a year ago being purportedly resolved...

But only for powerpc 64 bit...

It is still there for aarch64-linux used by Pi-OS bookworm 64 bit, which is now the recommended version...

RaspberryPi is a very popular platform so a solution for that is needed.

I have tried building (via fpcupdeluxe) several revisions of fpc up to and including trunk, but all fail with the same error outlined in the ticket above.

I also downloaded the sources to build FPC ansd Lazarus directly, but the FPC build failed again with the same error.
Then I installed fpc 3.2.2 via apt (sudo apt install fpc) and when I use this compiler I can start using Lazarus since with that Lazarus builds from sources (both 2.2.6 and the 3.0_RC2)

Here is what I have now:

$ apt policy fpc
fpc:
Installed: 3.2.2+dfsg-20
Candidate: 3.2.2+dfsg-20
Version table:
*** 3.2.2+dfsg-20 500
500 http://deb.debian.org/debian bookworm/main arm64 Packages 500 http://deb.debian.org/debian bookworm/main armhf Packages 100 /var/lib/dpkg/status

So I will wait for the next release before resuming building from sources on Linux arm 64 bit.