=> Bootstrap dependency digest>=20010302: found digest-20121220
===> Skipping vulnerability checks.
WARNING: No /var/db/pkg/pkg-vulnerabilities file found.
WARNING: To fix run: `/usr/sbin/pkg_admin -K /var/db/pkg fetch-pkg-vulnerabilities'.
checksum: No checksum recorded for firefox31-31.5.0/firefox-31.5.0esr.source.tar.bz2
ERROR: Make sure the Makefile and checksum file (/bulk-data/pkgsrc/devel/xulrunner31/../../www/firefox31/distinfo)
ERROR: are up to date.  If you want to override this check, type
ERROR: "/usr/bin/make NO_CHECKSUM=yes [other args]".
*** Error code 1

Stop.
make: stopped in /bulk-data/pkgsrc/devel/xulrunner31