=> Bootstrap dependency digest>=20010302: found digest-20121220
=> Checksum SHA1 OK for sr233.tar.Z
=> Checksum RMD160 OK for sr233.tar.Z
===> Installing dependencies for sr-2.3.3nb9
=> Build dependency x11-links>=0.72: found x11-links-0.74
===> Overriding tools for sr-2.3.3nb9
===> Extracting for sr-2.3.3nb9
===> Patching for sr-2.3.3nb9
=> Applying pkgsrc patches for sr-2.3.3nb9
===> Creating toolchain wrappers for sr-2.3.3nb9
ERROR: zlib>=1.1.4nb1 is not installed; can't buildlink files.
*** Error code 1

Stop.
bmake: stopped in /usr/pkgsrc/lang/sr
*** Error code 1

Stop.
bmake: stopped in /usr/pkgsrc/lang/sr