clean up makefile

Makefile

 mkfile_path := $(abspath $(lastword $(MAKEFILE_LIST)))
 WORKING_DIR := $(patsubst %/,%,$(dir $(mkfile_path)))
+
 BOOKNAME=kommersbuch
 SRC_DIR=src
 BUILD_DIR=build
 TMP_DIR=tmp
-SONG_DIR=${SRC_DIR}/songs
-BUILD_BOOK_DIR=${BUILD_DIR}/books
-TMP_BOOK_DIR=${TMP_DIR}/books
-BUILD_SONG_DIR=${BUILD_DIR}/songs
-TMP_SONG_DIR=${TMP_DIR}/songs
-BUILD_MIDI_DIR=${BUILD_DIR}/midi
-TMP_MIDI_DIR=${TMP_DIR}/midi
-BUILD_OPUS_DIR=${BUILD_DIR}/opus
+SONG_DIR=$(SRC_DIR)/songs
+BUILD_BOOK_DIR=$(BUILD_DIR)/books
+TMP_BOOK_DIR=$(TMP_DIR)/books
+BUILD_SONG_DIR=$(BUILD_DIR)/songs
+TMP_SONG_DIR=$(TMP_DIR)/songs
+BUILD_MIDI_DIR=$(BUILD_DIR)/midi
+TMP_MIDI_DIR=$(TMP_DIR)/midi
+BUILD_OPUS_DIR=$(BUILD_DIR)/opus
+
+BOOK_TYPES=folio quarto sexto octavo
 
-LY_FILES=$(wildcard ${SONG_DIR}/*.ly)
-LY_PDFS=$(patsubst %.ly,${BUILD_SONG_DIR}/%.pdf,$(notdir ${LY_FILES}))
-LY_TMP_PDFS=$(patsubst %.ly,${TMP_SONG_DIR}/%.pdf,$(notdir ${LY_FILES}))
-LY_MIDIS=$(patsubst %.ly,${BUILD_MIDI_DIR}/%.midi,$(notdir ${LY_FILES}))
-LY_TMP_MIDIS=$(patsubst %.ly,${TMP_MIDI_DIR}/%.midi,$(notdir ${LY_FILES}))
-LY_OPUS=$(patsubst %.ly,${BUILD_OPUS_DIR}/%.opus,$(notdir ${LY_FILES}))
+LY_FILES=$(wildcard $(SONG_DIR)/*.ly)
+LY_PDFS=$(patsubst %.ly,$(BUILD_SONG_DIR)/%.pdf,$(notdir $(LY_FILES)))
+LY_TMP_PDFS=$(patsubst %.ly,$(TMP_SONG_DIR)/%.pdf,$(notdir $(LY_FILES)))
+LY_MIDIS=$(patsubst %.ly,$(BUILD_MIDI_DIR)/%.midi,$(notdir $(LY_FILES)))
+LY_TMP_MIDIS=$(patsubst %.ly,$(TMP_MIDI_DIR)/%.midi,$(notdir $(LY_FILES)))
+LY_OPUS=$(patsubst %.ly,$(BUILD_OPUS_DIR)/%.opus,$(notdir $(LY_FILES)))
 
 .PHONY: book songs midi opus clean all
 .DEFAULT_GOAL := all
 
+define BUILDER
+$(TMP_BOOK_DIR)/%-$(TYPE).pdf: $(TMP_BOOK_DIR)/%.pdf
+	cd $(TMP_BOOK_DIR) && \
+	../../bin/makebook -v -t $(TYPE) -i $$(notdir $$<) -o $$(notdir $$@)
+endef
+$(foreach TYPE,$(BOOK_TYPES),$(eval $(BUILDER)))
+
 %.dir: 
 	mkdir -p $*
 
-${TMP_SONG_DIR}/%.pdf: ${SONG_DIR}/%.ly ${SONG_DIR}/%.tex | ${TMP_SONG_DIR}.dir
-	cd ${SRC_DIR} && lualatex --jobname='$(notdir $(basename $@))' --output-directory=${WORKING_DIR}/${TMP_SONG_DIR} --shell-escape ${WORKING_DIR}/${SRC_DIR}/song.tex ${WORKING_DIR}/${SONG_DIR}/$(notdir $(basename $@)).ly ${WORKING_DIR}/${SONG_DIR}/$(notdir $(basename $@)).tex
+$(TMP_SONG_DIR)/%.pdf: $(SONG_DIR)/%.ly $(SONG_DIR)/%.tex | $(TMP_SONG_DIR).dir
+	cd $(SRC_DIR) && lualatex --jobname='$(notdir $(basename $@))' \
+		--output-directory=$(WORKING_DIR)/$(TMP_SONG_DIR) \
+		--shell-escape $(WORKING_DIR)/$(SRC_DIR)/song.tex \
+		$(WORKING_DIR)/$(SONG_DIR)/$(notdir $(basename $@)).ly $(WORKING_DIR)/$(SONG_DIR)/$(notdir $(basename $@)).tex
 
-${BUILD_MIDI_DIR}/%.midi: ${TMP_MIDI_DIR}/%-1.midi | ${BUILD_MIDI_DIR}.dir
+$(BUILD_MIDI_DIR)/%.midi: $(TMP_MIDI_DIR)/%-1.midi | $(BUILD_MIDI_DIR).dir
 	cp $< $@
 
-${TMP_MIDI_DIR}/%-1.midi: ${SONG_DIR}/%.ly | ${TMP_MIDI_DIR}.dir
-	lilypond --output=${TMP_MIDI_DIR} ${WORKING_DIR}/$<
+$(TMP_MIDI_DIR)/%-1.midi: $(SONG_DIR)/%.ly | $(TMP_MIDI_DIR).dir
+	lilypond --output=$(TMP_MIDI_DIR) $(WORKING_DIR)/$<
 
-${BUILD_OPUS_DIR}/%.opus: ${BUILD_MIDI_DIR}/%.midi | ${BUILD_OPUS_DIR}.dir
+$(BUILD_OPUS_DIR)/%.opus: $(BUILD_MIDI_DIR)/%.midi | $(BUILD_OPUS_DIR).dir
 	timidity $< -Ow -o - | opusenc - $@
 
-${TMP_BOOK_DIR}/%.pdf: ${SRC_DIR}/%.tex ${SRC_DIR}/images/title.png | ${TMP_BOOK_DIR}.dir
-	latexmk -cd -lualatex -e '$$lualatex=q/lualatex %O -shell-escape %S/' -output-directory=${WORKING_DIR}/${TMP_BOOK_DIR} $<
-	rm -r ${SRC_DIR}/tmp-ly
-
-${TMP_BOOK_DIR}/%-folio.pdf: ${TMP_BOOK_DIR}/%.pdf
-	cd ${TMP_BOOK_DIR} && \
-	../../bin/makebook -v -t folio -i $(notdir $<) -o $(notdir $@)
-
-#long edge binding
-${TMP_BOOK_DIR}/%-quarto.pdf: ${TMP_BOOK_DIR}/%.pdf
-	cd ${TMP_BOOK_DIR} && \
-	../../bin/makebook -v -t quarto -i $(notdir $<) -o $(notdir $@)
-
-${TMP_BOOK_DIR}/%-sexto.pdf: ${TMP_BOOK_DIR}/%.pdf
-	cd ${TMP_BOOK_DIR} && \
-	../../bin/makebook -v -t sexto -i $(notdir $<) -o $(notdir $@)
-
-#short edge binding
-${TMP_BOOK_DIR}/%-octavo.pdf: ${TMP_BOOK_DIR}/%.pdf
-	cd ${TMP_BOOK_DIR} && \
-	../../bin/makebook -v -t octavo -i $(notdir $<) -o $(notdir $@)
+$(TMP_BOOK_DIR)/%.pdf: $(SRC_DIR)/%.tex $(SRC_DIR)/images/title.png | $(TMP_BOOK_DIR).dir
+	latexmk -cd -lualatex -e '$$lualatex=q/lualatex %O -shell-escape %S/' -output-directory=$(WORKING_DIR)/$(TMP_BOOK_DIR) $<
+	rm -r $(SRC_DIR)/tmp-ly
 
-${BUILD_DIR}/%.pdf: ${TMP_DIR}/%.pdf | ${BUILD_BOOK_DIR}.dir ${BUILD_SONG_DIR}.dir
+$(BUILD_DIR)/%.pdf: $(TMP_DIR)/%.pdf | $(BUILD_BOOK_DIR).dir $(BUILD_SONG_DIR).dir
 	cp $< $@
 
-book: ${BUILD_BOOK_DIR}/${BOOKNAME}.pdf ${BUILD_BOOK_DIR}/${BOOKNAME}-folio.pdf ${BUILD_BOOK_DIR}/${BOOKNAME}-quarto.pdf ${BUILD_BOOK_DIR}/${BOOKNAME}-sexto.pdf ${BUILD_BOOK_DIR}/${BOOKNAME}-octavo.pdf ${LY_FILES}
-songs: ${LY_PDFS}
-midi: ${LY_MIDIS}
-opus: ${LY_OPUS}
+book: $(BUILD_BOOK_DIR)/$(BOOKNAME).pdf $(BUILD_BOOK_DIR)/$(BOOKNAME)-folio.pdf $(BUILD_BOOK_DIR)/$(BOOKNAME)-quarto.pdf $(BUILD_BOOK_DIR)/$(BOOKNAME)-sexto.pdf $(BUILD_BOOK_DIR)/$(BOOKNAME)-octavo.pdf $(LY_FILES)
+songs: $(LY_PDFS)
+midi: $(LY_MIDIS)
+opus: $(LY_OPUS)
 all: book songs midi opus
 
 clean:
-	rm -rf ${BUILD_DIR}
-	rm -rf ${TMP_DIR}
-	rm -r ${SRC_DIR}/tmp-ly
+	rm -rf $(BUILD_DIR)
+	rm -rf $(TMP_DIR)
+	rm -rf $(SRC_DIR)/tmp-ly