error: invalid instruction mnemonic 'clz'

[tobiasdiez]

On macos-14-arm64 I get when building from source:

 In file included from cypari2/gen.c:1151:
      In file included from /opt/homebrew/include/pari/pari.h:51:
      ../src/kernel/none/level1.h:1269:60: error: invalid instruction mnemonic
      'clz'
        return lx==2? -(long)HIGHEXPOBIT:
      bit_accuracy(lx)-(long)bfffo(*int_MSW(x))-1;                                                              ^

see https://github.com/sagemath/sage/actions/runs/16633788264/job/47069709135?pr=40515 for full log.

[tobiasdiez]

It seems like it doesn't correctly recognizes that it's run on arm64