SOURCES=title.txt nastya.txt sasha.txt hill.txt weekend.txt

hollowhills.html: all.txt
	pandoc -t html --standalone -V date=`date +%x` -o $@  $+
hollowhills.epub: all.txt
	pandoc -t epub -V date=`date +%x` -o $@ $+
all.txt: $(SOURCES) Makefile
	cat $(SOURCES) > all.txt