#!/bin/sh if grep -qw PaX /proc/$$/status 2>/dev/null; then cat >&2 <<-EOF !! !! ruby-ffi does not work on kernel with PaX, unless you disable MPROTECT !! for ruby binary. If you're aware of security implications, execute: !! !! apk add paxmark && paxmark -m /usr/bin/ruby !! EOF fi