=> Bootstrap dependency digest>=20010302: found digest-20121220
===> 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'.
===> Building for pngcrush-1.7.56
cd /scratch/graphics/pngcrush/work/pngcrush-1.7.56-nolib && gcc -DPNG_USE_LOCAL_ARRAYS  -O2 -I/usr/pkg/include -I/usr/include `libpng-config --cflags` -o pngcrush pngcrush.c    -L/usr/pkg/lib -Wl,-R/usr/pkg/lib -L/usr/lib -Wl,-R/usr/lib `libpng-config --ldflags` -lz
=> Unwrapping files-to-be-installed.