6. Xref - The Cross Reference Tool

6 Xref - The Cross Reference Tool

Xref is a cross reference tool that can be used for finding dependencies between functions, modules, applications and releases. It does so by analyzing the defined functions and the function calls.

In order to make Xref easy to use, there are predefined analyses that perform some common tasks. Typically, a module or a release can be checked for calls to undefined functions. For the somewhat more advanced user there is a small, but rather flexible, language that can be used for selecting parts of the analyzed system and for doing some simple graph analyses on selected calls.

The following sections show some features of Xref, beginning with a module check and a predefined analysis. Then follow examples that can be skipped on the first reading; not all of the concepts used are explained, and it is assumed that the reference manual has been at leas