Configuring rpm 4, it gets as far as this: checking for gzread in -lz... no checking for gzread in -lgz... no configure: error: sorry rpm requires libz.a or libgz.a (from the zlib package) I have these two installed zlib-1.2.1-2 zlib-devel-1.2.1-2 and version 1.2.3 looks like it is the latest so the Mint version is not very old. Is it really missing gzread ? Regards, Peter