NAME = ref1
CHAPS = style front.roff toc.roff text.roff refs.roff
BIB = bib
PDFFLAGS = -sPAPERSIZE=a4 -dPDFSETTINGS=/prepress
REFER = refer -n -p bib -e -P -sLAD -l,2 -k -a

all: $(NAME).ps

$(NAME).ps: $(CHAPS) makefile $(BIB) toc.ig refs.ig
	export TROFFONTS=fonts;\
	soelim $(CHAPS) | $(REFER) | \
		troff -Tps -ms 2>err.ig | dpost >$@

err.ig: $(CHAPS)
	export TROFFONTS=fonts;\
	soelim $(CHAPS) | $(REFER) | \
		troff -Tps -ms -rZ1 -z 2>$@

toc.ig: err.ig
	sed -n '/^TOC____/s///p' err.ig >$@

refs.ig: err.ig
	mkdir -p refs
	awk -F '\t' '/^REF____/{ \
		sub(/^REF____/,""); \
		printf $$2 >"refs/"$$1; close("refs/$$1"); \
		printf $$3 >"refs/"$$1".page"; close("refs/$$1.page");\
	}' err.ig

pdf: $(NAME).pdf
$(NAME).pdf: $(NAME).ps
	ps2pdf $(PDFFLAGS) $(NAME).ps 2>/dev/null

book: book.pdf
book.pdf: book.ps
	ps2pdf $(PDFFLAGS) book.ps 2>/dev/null
book.ps: $(NAME).ps
	psbook -s16 $(NAME).ps | psnup -2 -m2mm >$@

clean:
	rm -f $(NAME).ps $(NAME).pdf book.ps book.pdf
	rm -rf refs
	rm -f *.ig