More recent versions compile nicely - just check them out. Furthermore, if you add # Mac OS X/arm64 darwin*--arm64) XCFLAGS="$XCFLAGS -DNO_ASM" ;; to src/makemake.in (for instance, just after the corresponding block for Mac OS X/x86_64) then it compiles even with generational garbage collection (if you have a proper libsigsev installed)! It passes all tests except some socket related ones which are known to give problems under macOS anyway also with intel CPUs. Roberto
Is Apple Silicon support for clisp worked on?