Missing XSB Object Files

When an object (*.O) file is missing from the lib directories you can normally run the make command in that directory to restore it (instructions for doing so are given in Chapter 2). However, to restore an object file in the directories syslib and cmplib, one needs to have a separate Prolog compiler accessible (such as a separate copy of XSB), because the XSB compiler uses most of the files in these two directories and hence will not function when some of them are missing. For this reason, distributed versions normally include all the object files in syslib and cmplib.