poudriere, native-xtools and jail older than host

I want to test my ports on aarch64 (for 13.1-RELEASE and 14-CURRENT) as
well, now that it's a tier-1 architecture, but running into a problem
doing so.

I don't have a suitable ARM machine for the purpose, so I'm relying on
qemu-user-static and native-xtools. I installed the jail for 14-CURRENT
manually from source, including native-xtools, and it's working
perfectly with poudriere.

For 13.1-RELEASE, I used the http method to install a jail like that:

# poudriere jail -c -j 131aa64 -a arm64.aarch64 -m http -v 13.1-RELEASE

After downloading and installing the distfiles, this automatically
started to build and install native-xtools. The only problem is: it
doesn't work, I can't even build ports-mgmt/pkg in that jail.

I tried to debug it in an interactive testport session, trying this in
pkg's source dir:

# CC=/nxb-bin/usr/bin/cc ./configure

and found these errors in config.log:

| Failed: /nxb-bin/usr/bin/cc -g -O2 conftest__.c -o conftest__ -larchive
| ld: error: /tmp/conftest__-e26774.o is incompatible with /usr/lib/crt1.o

I could work around this problem by disabling native-xtools (option -X
to poudriere-jail seems to do that trick), but I'd really prefer using
them for obvious reasons.

In case it's relevant, I'm using ports-mgmt/poudriere-devel.

Is there a way I can fix this problem?

TIA, Felix

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