=> Bootstrap dependency digest>=20010302: found digest-20160304
=> Checksum SHA1 OK for lsof_4.89.tar.bz2
=> Checksum RMD160 OK for lsof_4.89.tar.bz2
=> Checksum SHA512 OK for lsof_4.89.tar.bz2
===> Installing dependencies for lsof-4.89
==========================================================================
The supported build options for lsof are:

	lsof-less-secure-sockets lsof-more-secure

You can select which build options to use by setting PKG_DEFAULT_OPTIONS
or the following variable.  Its current value is shown:

	PKG_OPTIONS.lsof (not defined)

==========================================================================
=> Tool dependency gtar-base>=1.13.25: found gtar-base-1.30
=> Tool dependency nbpatch-[0-9]*: found nbpatch-20151107
=> Build dependency cwrappers>=20150314: found cwrappers-20180325
=> Full dependency perl>=5.0: found perl-5.26.2
=> Full dependency osabi-FreeBSD-11.2: found osabi-FreeBSD-11.2
===> Overriding tools for lsof-4.89
===> Extracting for lsof-4.89
Lsof requires kernel sources to be found in /usr/src/sys.
*** Error code 1

Stop.
bmake[1]: stopped in /usr/pkgsrc/sysutils/lsof
*** Error code 1

Stop.
bmake: stopped in /usr/pkgsrc/sysutils/lsof