# -*- Makefile -*-

# --------------------------------------------------------------------
export BIBINPUTS := ${PWD}/cryptobib/:${BIBINPUTS}
export TEXINPUTS := ${PWD}/drawings:${TEXINPUTS}

# --------------------------------------------------------------------
MAIN    := main
LATEXMK := latexmk -bibtex -output-directory=_build
LATEXMK += -pdflatex="pdflatex -synctex=1 -file-line-error"
EXTRAMK ?=
LINKS   := log synctex.gz

ifneq (${DRAFT},)
KO      := -
LATEXMK += -e '$$max_repeat = 1' -interaction=nonstopmode
endif

LATEXMK += $(EXTRAMK)

# --------------------------------------------------------------------
.PHONY: all links force scratch clean purge __force__

define latex
	$(LATEXMK) -pdf $* $(MAIN); err=$$?; \
	[ -f _build/$(MAIN).pdf ] && cp _build/$(MAIN).pdf .; \
	exit $$err
endef

all: prepare __force__
	$(KO)$(call latex)

force: prepare __force__
	$(KO)$(call latex,-g)

prepare: __force__
	for i in $(LINKS); do ln -sf _build/$(MAIN).$$i .; done
	rm -f _build/$(MAIN).pdf

scratch: purge all
	@true

clean:
	rm -rf _build/ $(LINKS:%=$(MAIN).%)

purge: clean
	rm -f $(MAIN).pdf