#!/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_11_1'
7
INPUT_11_1
cat > Makefile <<'MAKEFILE'
report.txt: table.txt
	@printf "report\n"
	@cp table.txt report.txt
table.txt: input.txt
	@printf "table\n"
	@cp input.txt table.txt
MAKEFILE
m -s report.txt