#!/usr/bin/env bash
set -euo pipefail
unset MAKEFLAGS MFLAGS GNUMAKEFLAGS
make_bin=$(command -v gmake || command -v make)
m() { "$make_bin" --no-print-directory -rR "$@"; }
work_dir=$(mktemp -d)
if [ "${KEEP_WORK:-0}" = 1 ]; then
  trap 'printf "Artifacts: %s\n" "$work_dir"' EXIT
else
  trap 'rm -rf -- "$work_dir"' EXIT
fi
cd "$work_dir"
export TMPDIR="$work_dir"
cat > input.txt <<'INPUT_24_1'
7
INPUT_24_1
cat > Makefile <<'MAKEFILE'
build/report.txt: input.txt | build
	@printf "normal=%s order-only=%s\n" "$^" "$|"
	@cp $< $@
build:
	@mkdir -p $@
MAKEFILE
m -s build/report.txt