PS = main.ps
DVI = $(addsuffix .dvi, $(basename ${PS}))
TEX = $(addsuffix .tex, $(basename ${PS}))
LATEX = /usr/bin/latex
DVIPS = dvips
XDVI = xdvi -s 8
GHOSTVIEW = gv
BACKUPDIRS = /home/Moon/Bak /usr/people/liju99/Bak
SHELL = sh

.PHONY: all g ghostview  d xdvi  c clean  b backup
.DELETE_ON_ERROR:

all:	g
g:	ghostview
ghostview: ${PS}
	@pid=`ps|grep -v grep|grep "${GHOSTVIEW} $<" | cut -d' ' -f1,2`; \
	if [ -n "$$pid" ]; then \
	 kill -s SIGHUP $$pid; \
	else \
	 sh -c "${GHOSTVIEW} $< &"; \
	fi;

d:	xdvi
xdvi:	${DVI}
	${XDVI} $< &

%.dvi: %.tex
	@while (echo $(LATEX) $<; \
	($(LATEX) </dev/null $< || rm -f $@ ) \
	| tee /dev/tty | \
	fgrep 'Rerun to get cross-references right' > /dev/null ) \
	do echo '\n ** Running latex again **\n' ; done

%.ps:	%.dvi
	${DVIPS} $< -o $@

c:	clean
clean:
	@echo
	-rm -f ${PS} ${DVI}; \
	rm -f *~ *.bak; \
	rm -f *.aux *.log *.toc
	@echo

b:	backup
backup: clean
	@tmp=/tmp/backupto.tar; \
	echo "taring the directory $(PWD) ..."; \
	dir=`echo $(PWD) | sed -e "s/.*\///g"`; \
	cd ..; \
	echo %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%; \
	tar cvf $$tmp $$dir/* \
	`ls -d $$dir/.* | sed -e "s/$$dir\/\.\.$$//" | \
	sed -e "s/$$dir\/\.$$//"`; \
	echo %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%; \
	echo compressing $$tmp with gzip ...; \
	gzip --verbose -c $$tmp > $$tmp.gz; \
	echo %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%; \
	nbytes=`ls -l $$tmp.gz | sed -e 's/  */ /g' | cut -d' ' -f 5`; \
	echo $$tmp.gz = $$nbytes bytes.; \
	for backup in $(BACKUPDIRS); do \
	 if [ -d $$backup ]; then \
	  echo ' '; \
	  echo "copying $$tmp.gz to $$backup/$$dir.tar.gz ..."; \
	  cp -i $$tmp.gz $$backup/$$dir.tar.gz; \
	 fi; \
	done; \
	echo