===> Installing dependencies for nagios-4.0.8nb1
=> Tool dependency mktools-[0-9]*: NOT found
=> Verifying /nonexistent for ../../pkgtools/mktools
make[1]: don't know how to make /nonexistent. Stop

make[1]: stopped in /usr/pkgsrc/pkgtools/mktools
*** Error code 2

Stop.
make: stopped in /usr/pkgsrc/meta-pkgs/nagios