ExtUtils::MakeMaker uses non-POSIX '::', at least; and
our own Documentation/include.mk and our postamble are
written for GNU make.
GNU make is also more widely-installed and available than any
other make; even if I'm not generally a fan of GNU-isms.
install the system (into /usr/local) with:
perl Makefile.PL
- make
+ make # GNU make is preferred, `gmake' on BSD systems
make test
make install # root permissions may be needed