#!/bin/bash -e

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

if self_not_included; then

if isset rm; then : "${remake:=$rm}"; fi #mnemonic: files are rm'd (overwritten)

# usage: target_filename/command() { echo_func; set_make_vars; use $target...; }

alias set_make_vars="$(cat <<'EOF'

local command="${FUNCNAME##*/}"; echo_vars command

local target_filename="${FUNCNAME%/*}"; echo_vars target_filename

local target="$top_dir/$target_filename"; echo_vars target

local target_stem="${target_filename%.*}"; echo_vars target_stem

local _remake="$remake" remake=; echo_vars _remake

EOF

)" # `remake=`: don't progagate remake to prerequisites

# usage: remaking || check if exists

# cmd line usage: [remake=1] func

alias remaking='test "$_remake"'

# usage: set_make_vars; ...; self_make overridden_target... # progagates $remake

function self_make() { remake="$_remake" "$@"; }

alias self_make='"self_make" ' # last space alias-expands next word

# usage: set_make_vars; check_target_exists

alias check_target_exists='remaking || require_not_exists "$target" || return 0'

alias check_fake_target_exists='remaking || declare if_not_exists=1'

	# defer check until to_file

# usage: set_make_vars; to_target cmd...

alias to_target='stdout="$target" to_file ' # last space alias-expands next word

make() # usage: make target...

{

	echo_func

	(

		# at verbosity < 4, hide messages about making included Makefiles

		# this can reduce # lines of output to 1/3 as much

		if ! "log+" 3 can_log; then fd="$log_fd" clog++ filter_fd sed \

-e '/^make ([^-][^[:space:]]*)?Makefile/,/^make\[[[:digit:]]+\]: .*Makefile/d' \

-e                                      '/^make\[[[:digit:]]+\]: .*Makefile/d'

		fi

		cmd_log_fd=1 self $(if ! can_log; then echo '--silent '; fi)"$@"

	)

}

top_make() { echo_func; make --directory="$top_dir" "$@"; }

if false; then ## usage:

inline_make <<'EOF'

target:

	$(self_dir)/cmd >$@

EOF

# target will be run automatically because it's first in the makefile

fi ##

inline_make()

{

	echo_func

	local_export self="$(readlink -f "${BASH_SOURCE[1]}")"; echo_vars self

	local_export self_dir="$(dirname "$self")"; echo_vars self_dir

	make --makefile=<((

		cat # script stdin from caller-provided stdin

		echo -n "

.SUFFIXES: # turn off built-in suffix rules

.SECONDARY: # don't automatically delete intermediate files

.DELETE_ON_ERROR: # delete target if recipe fails

"

	)|echo_stdin) "$@" <&20 # make's stdin from global stdin

}

fi