=> Bootstrap dependency digest>=20010302: found digest-20190127
=> Checksum SHA1 OK for libpqxx-7.3.0.tar.gz
=> Checksum RMD160 OK for libpqxx-7.3.0.tar.gz
=> Checksum SHA512 OK for libpqxx-7.3.0.tar.gz
===> Installing dependencies for libpqxx-7.3.0
==========================================================================
The supported build options for libpqxx are:

	doc

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

	PKG_OPTIONS.libpqxx (not defined)

==========================================================================
==========================================================================
The following variables will affect the build process of this package,
libpqxx-7.3.0.  Their current value is shown below:

        * PYTHON_VERSION_DEFAULT = 38
        * SSLBASE (defined)
        * SSLCERTBUNDLE (not defined)
        * SSLCERTS = /usr/pkg/etc/openssl/certs
        * SSLDIR = /usr/pkg/etc/openssl
        * SSLKEYS = /usr/pkg/etc/openssl/private

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

        * PYPACKAGE = python38

You may want to abort the process now with CTRL-C and change the value
of variables in the first group before continuing.  Be sure to run
`/usr/bin/make clean' after the changes.
==========================================================================
=> Tool dependency libtool-base>=2.4.2nb9: found libtool-base-2.4.6nb3
=> Tool dependency bsdtar-[0-9]*: found bsdtar-3.4.3
=> Tool dependency gmake>=3.81: found gmake-4.3nb2
=> Tool dependency pkgconf-[0-9]*: found pkgconf-1.8.0
=> Tool dependency checkperms>=1.1: found checkperms-1.12
=> Build dependency python38>=3.8.0: found python38-3.8.12
=> Build dependency cwrappers>=20150314: found cwrappers-20180325
=> Full dependency postgresql13-client>=13.1nb1: found postgresql13-client-13.4
===> Skipping vulnerability checks.
WARNING: No /usr/pkg/pkgdb/pkg-vulnerabilities file found.
WARNING: To fix run: `/usr/sbin/pkg_admin -K /usr/pkg/pkgdb fetch-pkg-vulnerabilities'.
===> Overriding tools for libpqxx-7.3.0
===> Extracting for libpqxx-7.3.0
===> Patching for libpqxx-7.3.0
===> Creating toolchain wrappers for libpqxx-7.3.0
===> Configuring for libpqxx-7.3.0
=> Modifying GNU configure scripts to avoid --recheck
=> Replacing config-guess with pkgsrc versions
=> Replacing config-sub with pkgsrc versions
=> Replacing install-sh with pkgsrc version
=> Replacing python interpreter in tools/m4esc.py tools/splitconfig.
=> Adding run-time search paths to pkg-config files.
=> Checking for portability problems in extracted files
checking whether the C++ compiler works... yes
checking for C++ compiler default output file name... a.out
checking for suffix of executables... 
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether we are using the GNU C++ compiler... yes
checking whether c++ accepts -g... yes
checking whether c++ supports C++17 features with -std=c++17... no
checking whether c++ supports C++17 features with +std=c++17... no
checking whether c++ supports C++17 features with -h std=c++17... no
checking whether c++ supports C++17 features with -std=c++1z... no
checking whether c++ supports C++17 features with +std=c++1z... no
checking whether c++ supports C++17 features with -h std=c++1z... no
configure: error: *** A compiler with support for C++17 language features is required.
*** Error code 1

Stop.
make[1]: stopped in /tree/pkgsrc/databases/libpqxx
*** Error code 1

Stop.
make: stopped in /tree/pkgsrc/databases/libpqxx