=> Bootstrap dependency digest>=20010302: found digest-20121220
=> Checksum SHA1 OK for libXp-1.0.1.tar.bz2
=> Checksum RMD160 OK for libXp-1.0.1.tar.bz2
===> Installing dependencies for libXp-1.0.1
=> Tool dependency libtool-base>=2.2.6bnb3: found libtool-base-2.4.2nb1
=> Tool dependency pkg-config>=0.25: found pkg-config-0.28
=> Build dependency x11-links>=0.72: found x11-links-0.74
=> Build dependency printproto>=1.0.3: found printproto-1.0.5
===> Overriding tools for libXp-1.0.1
===> Extracting for libXp-1.0.1
===> Patching for libXp-1.0.1
===> Creating toolchain wrappers for libXp-1.0.1
ERROR: zlib>=1.1.4nb1 is not installed; can't buildlink files.
*** Error code 1

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

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