%.tex: %.Rnw
$(R) --encoding=utf-8 -e "library('knitr'); knit('$<')"
-%.pdf: %.tex $(wildcard *.bib) $(wildcard *.tex)
- latexmk -pdf -pdflatex='xelatex -interaction=nonstopmode %O %S' -bibtex -use-make $<
+%.pdf: %.tex
+ latexmk -f -pdf -pdflatex='xelatex -interaction=nonstopmode %O %S' -bibtex -use-make $<