=> Bootstrap dependency digest>=20010302: found digest-20160304
===> 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 pavucontrol-3.0.tar.xz
=> Checksum RMD160 OK for pavucontrol-3.0.tar.xz
=> Checksum SHA512 OK for pavucontrol-3.0.tar.xz
===> Installing dependencies for pavucontrol-3.0nb4
=> Tool dependency intltool>=0.40.0: found intltool-0.51.0nb2
=> Tool dependency gmake>=3.81: found gmake-4.1nb3
=> Tool dependency perl>=5.0: found perl-5.24.0
=> Tool dependency pkgconf-[0-9]*: found pkgconf-1.0.1
=> Tool dependency checkperms>=1.1: found checkperms-1.11nb1
=> Build dependency x11-links>=1.02: found x11-links-1.02
=> Build dependency cwrappers>=20150314: found cwrappers-20170112
=> Full dependency libcanberra>=0.27nb6: found libcanberra-0.27nb6
=> Full dependency gtk3+>=3.20.6nb2: found gtk3+-3.22.6
=> Full dependency pulseaudio>=10.0: found pulseaudio-10.0
=> Full dependency libsigc++>=2.0.17nb1: found libsigc++-2.10.0
=> Full dependency desktop-file-utils>=0.10nb1: found desktop-file-utils-0.23
=> Full dependency gtkmm3>=3.20.1nb2: found gtkmm3-3.22.0
===> Overriding tools for pavucontrol-3.0nb4
===> Extracting for pavucontrol-3.0nb4
===> Patching for pavucontrol-3.0nb4
===> Creating toolchain wrappers for pavucontrol-3.0nb4
ERROR: json-c>=0.12 is not installed; can't buildlink files.
*** Error code 1

Stop.
make[1]: stopped in /data/pkgsrc-current/audio/pavucontrol
*** Error code 1

Stop.
make: stopped in /data/pkgsrc-current/audio/pavucontrol