Compiling on Apple Silicon machines

[Roberto A. <rob...@gm...>]

I have downloaded the current sources (2.49.93+) and I have first
compiled it with --enable-compatibility, and then I tried adding more
modules and features.

Finally, I added

      # Mac OS X/arm64
      darwin*--arm64)
        XCFLAGS="$XCFLAGS -DNO_ASM"
        ;;

to src/makemake.in (just after the corresponding block for Mac OS
X/x86_64) and CLISP  compiles even with generational garbage
collection.  It passes all tests except some socket related ones which
seems to be known to give problems under macOS anyway also with intel
CPUs. I was able to compile and run xindy.

My configuration command is

./configure --with-libreadline-prefix=/opt/homebrew/opt/readline/            \
            --with-libiconv-prefix=/opt/homebrew/opt/libiconv/               \
            --with-module=libsvm --with-module=rawsock                       \
            --with-module=pari --with-libpari-prefix=/opt/homebrew/opt/pari/ \
            --cbc my-build-with-pari

- just to show which modules I load - and everything seems to run smoothly.

I therefore suggest to perform the above addition to src/makemake.in

 Roberto