=> Bootstrap dependency digest>=20211023: found digest-20220214
=> Checksum BLAKE2s OK for mdds-2.0.1.tar.bz2
=> Checksum SHA512 OK for mdds-2.0.1.tar.bz2
===> Installing dependencies for mdds-2.0.1
=> Tool dependency mktools-[0-9]*: found mktools-20220614
=> Tool dependency bsdtar-[0-9]*: found bsdtar-3.4.3
=> Tool dependency gmake>=3.81: found gmake-4.3nb3
=> Tool dependency cwrappers>=20150314: found cwrappers-20220403
=> Build dependency boost-headers-1.78.*: found boost-headers-1.78.0
=> Full dependency boost-libs-1.78.*: found boost-libs-1.78.0nb2
===> 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 mdds-2.0.1
===> Extracting for mdds-2.0.1
===> Patching for mdds-2.0.1
=> Applying pkgsrc patches for mdds-2.0.1
===> Creating toolchain wrappers for mdds-2.0.1
===> Configuring for mdds-2.0.1
=> 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
=> Adding run-time search paths to pkg-config files.
INFO: [subst.mk:_pkgconfig] Nothing changed in "misc/mdds.pc.in".
checking for a BSD-compatible install... /usr/bin/install -c -o pbulk -g users
checking whether build environment is sane... yes
checking for a thread-safe mkdir -p... ./install-sh -c -d
checking for gawk... /usr/bin/awk
checking whether make sets $(MAKE)... yes
checking whether make supports nested variables... yes
checking whether to enable maintainer-specific portions of Makefiles... no
checking whether make supports the include directive... yes (GNU style)
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 dependency style of c++... gcc3
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/devel/mdds
*** Error code 1

Stop.
make: stopped in /tree/pkgsrc/devel/mdds