`make install' is used to install (copy) the files necessary for using IRBEM-LIB into `matlab' and top level IRBEM-LIB directories. The only optional `make' variable is as follows... INSTALLDIR= where is the directory path of where the `matlab',directory provided in the distribution exist. If this is not specified, a default path of `.' is used (which specifies the current directory level). For example, to install the IRBEM-LIB distribution at the current directory level enter the following... make install If you wanted to install the distribution at a different location, for instance `/usr/local/irbem_lib', enter the following... make INSTALLDIR=/usr/local/irbem_lib install Note that `install' is at the end of the command line after the `make' variable.