Open Motif is a publicly licensed version of the Motif toolkit, which is widely regarded as the industry standard user interface toolkit for UNIX.
The software provides a `configure' shell script that helps in guessing correct values for various system-dependent variables that are used during compilation. These values are utilized to create a `Makefile' in each directory of the package. The tool may also produce one or more `.h' files containing system-dependent definitions. Furthermore, it generates a shell script called `config.status' that can be run in the future to reconfigure the current configuration. It also saves the results of its tests in a file named `config.cache' to speed up reconfiguring and generates a file named `config.log' containing compiler output, mainly useful for debugging `configure'.
If you require to do uncommon things for compiling the package, try to determine how `configure' could check whether to do them and mail the diffs or instructions to the email address specified in the `README'. This will be considered for the next release. If at any point, `config.cache' contains results you don't want to keep, feel free to edit or remove it.
Finally, the `configure.in' file is used to create `configure' by a program called `autoconf'. You only need `configure.in' if you wish to change or regenerate `configure' using a newer version of `autoconf'. Open Motif is a comprehensive user interface toolkit that provides you with all the necessary resources required for software development on UNIX systems, making it an excellent choice for developers.