split makefiles, added empty page template

build-Makefile

@@ -0,0 +1,22 @@
+%.pdf: %.tex
+	lualatex --shell-escape $<
+print_a3.pdf: songsheet_a3part.pdf
+	pdftk A=$< B=$< shuffle A B output -  | pdfjam -o a4.pdf --nup 1x2 --paper a4paper --clip true /dev/stdin && \
+	pdfbook2 --paper a3paper -s -n -o 0 -i 0 -t 0 -b 0 a4.pdf && \
+	mv a4-book.pdf print_a3.pdf && \
+	rm a4.pdf
+print_a4.pdf: songsheet_a4part.pdf
+	pdftk A=$< B=$< shuffle A B output - | pdfjam -o $@ --nup 1x2 --paper a4paper /dev/stdin;
+songsheet_a3part.pdf: songsheet_a5.pdf
+	cp $< $@
+#	pdftk $< cat ~3-4 output $@
+songsheet_a4part.pdf: songsheet_a5.pdf
+#	cp $< $@
+# Uncomment this if songsheet.pdf has 12 pages or less, and you want to use an a4 sheet inside a folded a3 sheet
+	pdftk $< cat 3-4 output $@
+songsheet_a5.pdf: songsheet.pdf
+	pdfjam -o $@ --nup 2x1 --paper a5paper --landscape $<
+%.tex:
+	$(MAKE) -C .. $@
+clean_intermediate:
+	$(RM) songsheet_a3part.pdf songsheet_a4part.pdf songsheet_a5.pdf