Errors building cmake-3.15.3 with pkgsrc-2019Q3

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

	hello.  I'm trying to build devel/cmake from the pkgsrc using the
pkgsrc-2019Q3 branch of the pkgsrc tree.  I'm building on a
NetBSD-9.0/amd64 system.  The system  has xbase and xcomp sets installed
from the snapshots on nyftp.netbsd.org from October 17 or so, and the rest
of the OS is built from sources as of September 25, 2019 or so.
This looks like an X problem, but I have no idea where to look for the
missing file.  Has anyone run into this eror?
-thanks
-Brian


=> Bootstrap dependency digest>=20010302: found digest-20190127
===> 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 SHA1 OK for cmake-3.15.3.tar.gz
=> Checksum RMD160 OK for cmake-3.15.3.tar.gz
=> Checksum SHA512 OK for cmake-3.15.3.tar.gz
===> Installing dependencies for cmake-3.15.3
==========================================================================
The following variables will affect the build process of this package,
cmake-3.15.3.  Their current value is shown below:

        * CURSES_DEFAULT = curses
        * KRB5_DEFAULT = heimdal
        * SSLBASE = /usr
        * SSLCERTS = /etc/openssl/certs
        * SSLDIR = /etc/openssl
        * SSLKEYS = /etc/openssl/private

Based on these variables, the following variables have been set:

        * CURSES_TYPE = curses
        * KRB5BASE (defined, but empty)
        * KRB5_TYPE = heimdal

You may want to abort the process now with CTRL-C and change their value
before continuing.  Be sure to run `/usr/bin/make clean' after
the changes.
==========================================================================
=> Tool dependency gmake>=3.81: found gmake-4.2.1nb1
=> Build dependency rhash>=1.3.1: found rhash-1.3.8
=> Build dependency cwrappers>=20150314: found cwrappers-20180325
=> Full dependency libuv>=1.6: found libuv-1.32.0
=> Full dependency curl>=7.65.3nb3: found curl-7.66.0nb1
===> Overriding tools for cmake-3.15.3
===> Extracting for cmake-3.15.3
===> Patching for cmake-3.15.3
=> Applying pkgsrc patches for cmake-3.15.3
===> Creating toolchain wrappers for cmake-3.15.3
===> Configuring for cmake-3.15.3
=> Fixing LOCALBASE and X11 paths.
/bin/cp /usr/local/netbsd/pkgsrc/devel/cmake/files/Source_Checks_cm_cxx_cbegin.cxx /usr/local/netbsd/pkgsrc/devel/cmake/work/cmake-3.15.3/Source/Checks/cm_cxx_cbegin.cxx
cp: /usr/local/netbsd/pkgsrc/devel/cmake/files/Source_Checks_cm_cxx_cbegin.cxx: No such file or directory
*** Error code 1

Stop.
make[1]: stopped in /usr/local/netbsd/pkgsrc/devel/cmake
*** Error code 1

Stop.
make: stopped in /usr/local/netbsd/pkgsrc/devel/cmake