=> Bootstrap dependency digest>=20010302: found digest-20121220
=> Checksum SHA1 OK for xbomber.0.8.tar.gz
=> Checksum RMD160 OK for xbomber.0.8.tar.gz
===> Installing dependencies for xbomber-0.8nb2
=> Build dependency x11-links>=0.72: found x11-links-0.74
===> Overriding tools for xbomber-0.8nb2
===> Extracting for xbomber-0.8nb2
===> Patching for xbomber-0.8nb2
=> Applying pkgsrc patches for xbomber-0.8nb2
===> Creating toolchain wrappers for xbomber-0.8nb2
ERROR: zlib>=1.1.4nb1 is not installed; can't buildlink files.
*** Error code 1

Stop.
bmake: stopped in /usr/pkgsrc/games/xbomber
*** Error code 1

Stop.
bmake: stopped in /usr/pkgsrc/games/xbomber