LATEX:=pdflatex

DOCUMENT:=ar
PROBLEMS:=1 2 3 4

SOURCES:=$(DOCUMENT).tex $(addsuffix .tex,$(PROBLEMS))

.SECONDARY: $(DOCUMENT).fmt $(SOLUTIONS)

all: $(DOCUMENT).pdf

%.pdf: %.tex %.fmt $(SOURCES)
	$(LATEX) $<
	$(LATEX) $<

%.fmt: pre.tex
	$(LATEX) -ini -jobname="$(basename $@)" "&$(LATEX) $<\dump"

clean:
	$(RM) -v $(addprefix $(DOCUMENT).,fmt aux log out toc pdf) *.xyc