=> Bootstrap dependency digest>=20010302: found digest-20121220
=> Checksum SHA1 OK for pwm-20060517.tar.gz
=> Checksum RMD160 OK for pwm-20060517.tar.gz
===> Installing dependencies for pwm-1.0.20060517nb1
=> Tool dependency gmake>=3.81: found gmake-3.82nb6
=> Build dependency x11-links>=0.72: found x11-links-0.74
===> Overriding tools for pwm-1.0.20060517nb1
===> Extracting for pwm-1.0.20060517nb1
===> Patching for pwm-1.0.20060517nb1
=> Applying pkgsrc patches for pwm-1.0.20060517nb1
===> Creating toolchain wrappers for pwm-1.0.20060517nb1
ERROR: zlib>=1.1.4nb1 is not installed; can't buildlink files.
*** Error code 1

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

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