libx32z1-dev 1:1.2.11.dfsg-4.1ubuntu1 (amd64 binary) in ubuntu kinetic

 zlib is a library implementing the deflate compression method found
 in gzip and PKZIP. This package includes the development support
 files for building n32 applications.
 .
 This package should ONLY be used for building packages, users who do
 not need to build packages should use multiarch to install the relevant
 runtime.