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#!/bin/bash -e
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. "$(dirname "${BASH_SOURCE[0]}")"/util.sh
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if self_not_included; then
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# usage: target_filename/command() { echo_func; set_make_vars; use $target...; }
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alias set_make_vars="$(cat <<'EOF'
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local command="${FUNCNAME##*/}"; echo_vars command
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local target_filename="${FUNCNAME%/*}"; echo_vars target_filename
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local target="$top_dir/$target_filename"; echo_vars target
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local target_stem="${target_filename%.*}"; echo_vars target_stem
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EOF
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)"
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if isset rm; then : "${remake:=$rm}"; fi #mnemonic: files are rm'd (overwritten)
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# usage: remaking || check if exists
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# cmd line usage: [remake=1] func
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alias remaking='test "$remake"'
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# usage: set_make_vars; check_target_exists
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alias check_target_exists='remaking || require_not_exists "$target" || return 0'
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alias check_fake_target_exists='remaking || declare if_not_exists=1'
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	# defer check until to_file
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# usage: set_make_vars; to_target cmd...
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alias to_target='stdout="$target" to_file ' # last space alias-expands next word
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make() { echo_func; cmd_log_fd=1 self "$@"; }
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top_make() { echo_func; make --directory="$top_dir" "$@"; }
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if false; then ## usage:
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inline_make <<'EOF'
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target:
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	$(self_dir)/cmd >$@
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EOF
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# target will be run automatically because it's first in the makefile
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fi ##
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inline_make()
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{
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	echo_func
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	local_export self="$(readlink -f "${BASH_SOURCE[1]}")"; echo_vars self
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	local_export self_dir="$(dirname "$self")"; echo_vars self_dir
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	make --makefile=<((
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		cat # script stdin from caller-provided stdin
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		echo -n "
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.SUFFIXES: # turn off built-in suffix rules
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.SECONDARY: # don't automatically delete intermediate files
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.DELETE_ON_ERROR: # delete target if recipe fails
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"
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	)|echo_stdin) "$@" <&20 # make's stdin from global stdin
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}
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fi
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