- cd build; make -f Makefile.coq OPT="-opt -dont-load-proofs" ExtractionMain.vo
- cd build; make -f Makefile.coq Extraction.vo
+ cd build; $(MAKE) -f Makefile.coq OPT="-opt -dont-load-proofs" ExtractionMain.vo
+ cd build; $(MAKE) -f Makefile.coq Extraction.vo