=> Bootstrap dependency digest>=20010302: found digest-20121220
=> Checksum SHA1 OK for libstroke-0.5.1.tar.gz
=> Checksum RMD160 OK for libstroke-0.5.1.tar.gz
===> Installing dependencies for libstroke-0.5.1nb4
=> Tool dependency libtool-base>=2.2.6bnb3: found libtool-base-2.4.2nb1
=> Tool dependency gmake>=3.81: found gmake-3.82nb6
=> Build dependency x11-links>=0.72: found x11-links-0.74
===> Overriding tools for libstroke-0.5.1nb4
===> Extracting for libstroke-0.5.1nb4
===> Patching for libstroke-0.5.1nb4
===> Creating toolchain wrappers for libstroke-0.5.1nb4
ERROR: zlib>=1.1.4nb1 is not installed; can't buildlink files.
*** Error code 1

Stop.
bmake: stopped in /usr/pkgsrc/devel/libstroke
*** Error code 1

Stop.
bmake: stopped in /usr/pkgsrc/devel/libstroke