Doxygen

Doxygen is source code documentation generator for a variety of programming languages such as C, C++, and Fortran. It produces output in both latex, html and rtf. It is highly configurable, and has load of online documentation http://www.doxygen.nl/index.html. Getting started is easy with the included configdoxygen_fortran_config file. Simply run doxygen in the directory with your fortran source code. For this configuration latex and html output directories will be generated. To compile the latex, simple run make.

  doxygen doxygen_fortran_config