Notes for Scheme-to-C port for FreeBSD: The documentation provided on the X library interface for Scheme-to-C was very limited and as a result I'm not sure if I've got it right. Instead of using having the compiler link the library archives libsc.a (the standard schemetoc library) or scxl.a (the x library), two shared libraries are included, libsc.so.1 and libscxl.so.1. The syntax of the scc compiler has been extended to automatically use dynamic linking unless the -static flag is specified on the scc command line. For compiling exectables on the command line from only object files it has no method of knowing if you need the X library linked in, and will by default not. So, if you are building an application written for scheme->c which needs X support (such as ezd), you will need to supply a -lX11 flag on the command line. If you are compiling a single scheme file(not an object file) which has the (with xlib) line in the module statement it is not neccesary to include -lX11. Those not wishing to use the X library support can delete the following files: libscxl.so.1 The shared lib. schemetoc/libscxl.a The library archive. bin/scixl The X lib interpreter. Each is about 1.4 megabytes.