=> Bootstrap dependency digest>=20010302: found digest-20121220
=> Checksum SHA1 OK for abclock-1.0d.tar.gz
=> Checksum RMD160 OK for abclock-1.0d.tar.gz
===> Installing dependencies for abclock-1.0d
=> Build dependency x11-links>=0.72: found x11-links-0.74
===> Overriding tools for abclock-1.0d
===> Extracting for abclock-1.0d
===> Patching for abclock-1.0d
=> Applying pkgsrc patches for abclock-1.0d
===> Creating toolchain wrappers for abclock-1.0d
ERROR: zlib>=1.1.4nb1 is not installed; can't buildlink files.
*** Error code 1

Stop.
bmake: stopped in /usr/pkgsrc/time/abclock
*** Error code 1

Stop.
bmake: stopped in /usr/pkgsrc/time/abclock