Cxref 1.6e Description:
Cxref is an open source and totally free command-line software implemented in C and designed to allow developers to easily and quickly generate documentation, as well as cross-references, from the source code of a program that was also written in the C programming language. It can generate the documentation in several popular formats, including (but not limited to) HTML, LaTeX, SGML, and RTF. In addition, the program works well with ANSI C, but it doesn’t work with C++. The application alsol generates documentation of files, functions, variables, #include, #define, and type definitions. Detailed information and usage examples can be found on the official homepage or the project (see link below).