=> Bootstrap dependency digest>=20010302: found digest-20121220
=> Checksum SHA1 OK for xwd-1.0.5.tar.bz2
=> Checksum RMD160 OK for xwd-1.0.5.tar.bz2
===> Installing dependencies for xwd-1.0.5
=> Tool dependency pkg-config>=0.25: found pkg-config-0.28
=> Build dependency x11-links>=0.72: found x11-links-0.74
===> Overriding tools for xwd-1.0.5
===> Extracting for xwd-1.0.5
===> Patching for xwd-1.0.5
===> Creating toolchain wrappers for xwd-1.0.5
ERROR: zlib>=1.1.4nb1 is not installed; can't buildlink files.
*** Error code 1

Stop.
bmake: stopped in /usr/pkgsrc/x11/xwd
*** Error code 1

Stop.
bmake: stopped in /usr/pkgsrc/x11/xwd