[Bug target/70464] [arch64] create a self hosting compiler

[ge...@schorsch-tech.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70464

--- Comment #2 from ge...@schorsch-tech.de ---
I also tried various target triplets
aarch64-linux-gnu and aarch64-armv8a-linux-gnueabi. Nut as far as i know
aarch64-linux-gnu is right.