oldest I could find, dated 1979: http://minnie.tuhs.org/cgi-bin/utree.pl?file=V7/usr/src/cmd/make/makefile http://minnie.tuhs.org/cgi-bin/utree.pl?file=V7/usr/

oldest I could find, dated 1979: http://minnie.tuhs.org/cgi-bin/utree.pl?file=V7/usr/src/cmd/make/makefile http://minnie.tuhs.org/cgi-bin/utree.pl?file=V7/usr/src/cmd/... current gnu make: http://git.savannah.gnu.org/cgit/make.git/plain/Makefile.am http://git.savannah.gnu.org/cgit/make.git/plain/Makefile.am