Problems with pkgsrc on NetBSD-5.2

[Brian Buhrow <buhrow%nfbcal.org@localhost>]

	hello.  I've tried updating to the latest pkgsrc tree with cvs, or,
failing that, pkgsrc-2017Q2 so I can install the latest version of openssl.
However, after updating the pkgsrc ree, when I run make clean in
security/openssl, I get the following errors.  Running a make clean in the
pkgtools directory yields the same errors.   I'm assuming I'm missing some
simple step, but pkgsrc trees from earlier years work just fine.  Is this a
known issue?  Is pkgsrc not supported on NetBDS-5.2 anymore?
-thanks
-Brian


<Output of make clean in security/openssl>
make: "../../mk/pkginstall/../../mk/pkginstall/bsd.pkginstall.mk" line 796: Malformed conditional (!empty(OCAML_FINDLIB_REGISTER:M[Yy][Ee][Ss]))
make: "../../mk/pkginstall/../../mk/pkginstall/bsd.pkginstall.mk" line 807: Malformed conditional (!empty(OCAML_FINDLIB_REGISTER:M[Yy][Ee][Ss]))
make: "../../mk/pkginstall/../../mk/pkginstall/bsd.pkginstall.mk" line 811: warning: duplicate script for target ".if" ignored
make: "../../mk/pkginstall/../../mk/pkginstall/bsd.pkginstall.mk" line 801: warning: using previous script for ".if" defined here
make: Fatal errors encountered -- cannot continue

make: stopped in /usr/pkgsrc/security/openssl