One has to start with the configuration by "./brinstall/configure". Using the -h or -help option configure shows all its options which may be used to configure your Brahms installation. After the configuration one has to run "gmake" and optional "gmake test" to check the installation. The libraries and axecutables are stored in a seperate subdirectory (default: a subdirectory "build" created in the "root" directory - see the -prefix option of configure).
The results of gmake test are also stored herein. Details for the installation and possible modifications are described at the WEB page:
http://www-zeuthen.desy.de/lc_repository/detector_simulation/dev/Brahms