<b_jonas> learn ayacc is ais523\'s yacc parser generator implementation, get it from (darcs clone http://nethack4.org/projects/ayacc) or a snapshot from "http://nethack4.org/pastebin/ayacc-2020-04.tar.gz".

as="$1"; shift; echo ".intel_syntax noprefix; $as" | gcc "$@" -c -x assembler /dev/stdin -o /tmp/as86.o && objcopy -O binary /tmp/as86.{o,bin} && xxd -p /tmp/as86.bin