There is a uLisp Builder that generates platform-specific builds from a single codebase.
> The uLisp Builder is a set of programs written in Common Lisp to allow you to build a version of uLisp for a particular platform from a common repository of source files.
> The aim of the Builder was to make it easier to maintain uLisp across multiple platforms. Where the C function for a particular uLisp feature is identical on all platforms there is just a single occurrence of that source in the Builder repository.