Ubuntu 22 has almost everything necessary to cross-build arm64 MIDAS frontends:

# apt install g++-12-aarch64-linux-gnu gcc-12-aarch64-linux-gnu-base libstdc++-12-dev-arm64-cross
$ aarch64-linux-gnu-gcc-12 -o ttcp.aarch64 ttcp.c -static

to cross-build MIDAS:

make arm64_remoteonly -j

run programs from $MIDASSYS/linux-arm64-remoteonly/bin
link frontends to libraries in $MIDASSYS/linux-arm64-remoteonly/lib

Ubuntu 22 do not provide an arm64 libz.a, as a workaround, I build a fake one. (we do not have HAVE_ZLIB anymore...). or you 
can link to libz.a from your arm64 linux image, assuming include/zlib.h are compatible.

K.O.