cosmopolitan/build/realify.sh

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#!/bin/sh
#
# SYNOPSIS
#
# gcc -g0 -Os -wrapper build/realify.sh -ffixed-r{8,9,1{0,1,2,4,5}}
#
# OVERVIEW
#
# Reconfigures x86_64 compiler to emit 16-bit PC boot code.
if [ "${1##*/}" = as ]; then
for x; do
if [ "${x##*.}" = s ]; then
{
printf "\t.code16gcc"
sed -f build/realify.sed "$x"
} >"$x".tmp
mv -f "$x".tmp "$x"
fi
done
fi
exec "$@"