I've updated my GNAT/Emacs Ada path utilities gnatpmake and adapath.el at <http://www.pogner.demon.co.uk/gnatpmake/>. gnatpmake automates the management of GNAT Ada program libraries (in a simple way) by the use of a special file (.adapath) which is optionally present in each program library directory. Each .adapath file specifies the paths used for compilation of the library directory in which it is found. adapath.el contains an Emacs function adapath which manages the directory search lists used to find files from Ada and compilation modes. Both are now available under the GPL.