#!/bin/bash

set -o errexit; shopt -s expand_aliases

# run scripts: a bash-based replacement for make

# unlike make, supports full bash functionality including multiline commands

# usage: path/to/dir/run cmd args

if false; then #### run script template:

#!/bin/bash

set -o errexit

. "$(dirname "${BASH_SOURCE[0]}")"/path/to/util.run or file_including_util.run

. "$(dirname "${BASH_SOURCE[0]}")"/other_includes

cmd ()

{

	"$(dirname "${BASH_SOURCE[0]}")"/path_relative_to_self

	"$(dirname "${BASH_SOURCE[1]}")"/path_relative_to_caller

	"$top_dir"/path_relative_to_outermost_script

}

run_cmd "$@"

fi ####

echo_cmd () { echo "$PS4$*" >&2; "$@"; }

usage () { echo "Usage: $1" >&2; (exit 2); }

top_dir="$(dirname "$0")" # outermost script

run_cmd ()

{

	# only if called in outermost script (+1 for this script)

	if test "${#BASH_SOURCE[@]}" -eq 2; then

		test "$#" -ge 1 || usage "$0 cmd args" || return

		"$@"

	fi

}

fwd ()

{

	for subdir in "${subdirs[@]}"; do

		echo_cmd "$(dirname "${BASH_SOURCE[1]}")"/"$subdir"/run "$@"

	done

}

make () { echo_cmd env make --directory="$top_dir" "$@"; }

run_cmd "$@"