# This makefile uses pdflatex instead of latexmk, which will only compile tex files that has changed.
# This makefile works great with dropbox or other online storage services.
# If there is no need to merge all the files, comment out line 13.

# list all the tex files
texfiles = $(shell echo *.tex)
# change all the suffix into pdf
output = $(texfiles:.tex=.pdf)

# build requires all the pdf files
all: $(output)
	# merge all the pdf files
	pdfjoin $(output) -o merge.pdf
	# remove all the other files
	rm *.aux *.log

# all pdf files depends on tex file with same name
%.pdf: %.tex
	# use pdflatex to generate pdf. the $< means all the first dependency
	pdflatex $<

clean:
	rm *.pdf *.aux *.log