=> Bootstrap dependency digest>=20010302: found digest-20121220
=> Checksum SHA1 OK for amiwm0.20pl48.tar.gz
=> Checksum RMD160 OK for amiwm0.20pl48.tar.gz
===> Installing dependencies for amiwm-0.20p48nb3
=> Build dependency x11-links>=0.72: found x11-links-0.74
===> Overriding tools for amiwm-0.20p48nb3
===> Extracting for amiwm-0.20p48nb3
===> Patching for amiwm-0.20p48nb3
=> Applying pkgsrc patches for amiwm-0.20p48nb3
===> Creating toolchain wrappers for amiwm-0.20p48nb3
ERROR: zlib>=1.1.4nb1 is not installed; can't buildlink files.
*** Error code 1

Stop.
bmake: stopped in /usr/pkgsrc/wm/amiwm
*** Error code 1

Stop.
bmake: stopped in /usr/pkgsrc/wm/amiwm