Cross compile FreeBSD on amd64 for arm64 failes via compile determination error

[Gordon Bergling]

Hi,

I usualy use a pretty straight forward technique to update some 
development systems to -CURRENNT. On amd64 -> amd64 everything 
went well, but on arm64 (Rasperry PI 4b) I get the following 
error messages, while I try to update the system via a NFS share.

sh: cc: Exec format error
make[2]: "/boiler/nfs/src/share/mk/bsd.compiler.mk" line 178: Unable to determine compiler type for CC=cc -target aarch64-unknown-freebsd13.0 --sysroot=/boiler/nfs/obj/boiler/nfs/src/arm64.aarch64/tmp -B/boiler/nfs/obj/boiler/nfs/src/arm64.aarch64/tmp/usr/bin.  Consider setting COMPILER_TYPE.

The command that produces the error is the following, which 
was executed on the arm64 system, so no TARGET directive is set.

# env MAKEOBJDIRPREFIX=/boiler/nfs/obj make KERNCONF=GENERIC-TCP SRCCONF=/boiler/nfs/conf/src.conf installkernel

Has anyone an idea what the problem is in this step of the installation?

Any help is much appreciated.

Kind regards,

Gordon