.PHONY: manual $(STANAPI_HOME)src/docs/stan-reference/stan-reference.tex 

MAJOR_VERSION := $(shell grep MAJOR_VERSION $(STANAPI_HOME)src/stan/version.hpp | sed -e 's/.*\"\([^]]*\)\".*/\1/g')
MINOR_VERSION := $(shell grep MINOR_VERSION $(STANAPI_HOME)src/stan/version.hpp | sed -e 's/.*\"\([^]]*\)\".*/\1/g')
PATCH_VERSION := $(shell grep PATCH_VERSION $(STANAPI_HOME)src/stan/version.hpp | sed -e 's/.*\"\([^]]*\)\".*/\1/g')
VERSION_STRING := $(MAJOR_VERSION).$(MINOR_VERSION).$(PATCH_VERSION)

manual: $(STANAPI_HOME)src/docs/stan-reference/stan-reference.pdf
	mkdir -p doc/
	$(foreach artifact, $^, cp $(artifact) doc/$(basename $(notdir $(artifact)))-$(VERSION_STRING).pdf;)

MANUAL_FLAGS=

%.pdf: %.tex
	cd $(dir $@); latexmk -pdf -pdflatex="pdflatex -interactive=nonstopmode" -use-make $(notdir $^)