=> Bootstrap dependency digest>=20010302: found digest-20190127
=> Checksum SHA1 OK for stacks-2.2.tar.gz
=> Checksum RMD160 OK for stacks-2.2.tar.gz
=> Checksum SHA512 OK for stacks-2.2.tar.gz
===> Installing dependencies for stacks-2.2nb4
==========================================================================
The following variables will affect the build process of this package,
stacks-2.2nb4.  Their current value is shown below:

        * PYTHON_VERSION_DEFAULT = 38

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 their value
before continuing.  Be sure to run `/opt/pkg/bin/bmake clean' after
the changes.
==========================================================================
=> Tool dependency checkperms>=1.1: found checkperms-1.12
=> Build dependency cwrappers>=20150314: found cwrappers-20180325
=> Full dependency perl>=5.8.0: found perl-5.32.0nb1
=> Full dependency python38>=3.8.0: found python38-3.8.7
===> Skipping vulnerability checks.
WARNING: No /opt/pkg/pkgdb/pkg-vulnerabilities file found.
WARNING: To fix run: `/opt/pkg/sbin/pkg_admin -K /opt/pkg/pkgdb fetch-pkg-vulnerabilities'.
===> Overriding tools for stacks-2.2nb4
===> Extracting for stacks-2.2nb4
===> Patching for stacks-2.2nb4
===> Creating toolchain wrappers for stacks-2.2nb4
===> Configuring for stacks-2.2nb4
=> 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 scripts/*.py.
=> Replacing bash interpreter in scripts/stacks-integrate-alignments scripts/stacks-gdb scripts/stacks-dist-extract.
INFO: [replace-interpreter] Nothing changed in scripts/stacks-integrate-alignments.
INFO: [replace-interpreter] Nothing changed in scripts/stacks-gdb.
=> Replacing Perl interpreter in scripts/*.pl.
=> Checking for portability problems in extracted files
checking for a BSD-compatible install... /usr/bin/install -c -o sjmulder -g staff
checking whether build environment is sane... yes
checking for a thread-safe mkdir -p... /opt/pkg-dev/bin/gmkdir -p
checking for gawk... /opt/pkg/bin/nawk
checking whether make sets $(MAKE)... yes
checking whether make supports nested variables... yes
checking whether the C++ compiler works... no
configure: error: in `/opt/work/biology/stacks/work/stacks-2.2':
configure: error: C++ compiler cannot create executables
See `config.log' for more details
*** Error code 77

Stop.
bmake[1]: stopped in /opt/pkgsrc/biology/stacks
*** Error code 1

Stop.
bmake: stopped in /opt/pkgsrc/biology/stacks