This page describes how to compile GNAT/GPL. First you will need to download the all GNAT/GPL sources available.
The path names are more or less hard coded and installation is done in /opt/ada so you should check if they fit your needs.
The script compiles all and everything in one go - if you don't need everything you should make a copy and cut out everything you are not interested it.
There are quite a few tricks and twists incorporated into the script. Missing files copied, makefiles patched and so on. So read it carefully.
/work/gnat-gpl Base directory for the build process. Script files, downloads and all temporary files go here. You need just about 1 GB of free space to compile everything.
/work/configure Script files go here. Should also be the current directory when starting the scripts.
/work/gnat-gpl/2005/... Downloaded files. The structure should be the same as the one used by the libre site when creating you download package.
/opt/gnat Base directory for the installation. You need about 400 MB of free space when you install everything.
There are two options for the script get and conf. get will extract the sources and conf will configure the extracted sources. So the first time round you use:
For reproducible result you can completely delete all the files (apart the downloaded archives of course) and then just re-extract them with the get option.
Currently the script works on some older platforms. But there are some fixes needed if you have a newer Linux with a newer GTK.
The supplied pango won't compile with newer freetypes . In such cases you should install pango from the distribution.
The Python detector in GPS is quite primitive and supplies misleading error messages. The --with-python options needs to point to a directory from which to find lib/libpython.so and include/python/ . On most systems that should be /usr . You might have to provide symbolic links to the actual files and directories.