This directory is concerned with generating the following frameworks for use on OS X: GMP.framework GNUreadline.framework To make them, run 'make all' in this directory. (The first time that you run that command, the readline source file readline-5.2.tar.gz will be downloaded from the bash site ftp.cwru.edu into this directory.) Once you've built the frameworks, you should copy them into /Library/Frameworks. All subsequent builds of ghc will automatically use them as dependencies.