1.6.2 Runtime Environment Variables

These environment variables are referred to by the runtime system.

HOME

Directory in which to look for init files, e.g. /home/joe. HOME is set by the login shell.

TMPDIR

TEMP

TMP

Directory for various temporary files. The variables are tried in the given order. If none of them is suitable, built-in defaults are used: /var/tmp, /usr/tmp, /tmp.

MITSCHEME_INF_DIRECTORY

Directory containing the debugging information files for the Scheme system. Should contain subdirectories corresponding to the subdirectories in the source tree. For example, if its value is f:\random, runtime system debugging files will be expected in f:\random\runtime, while Edwin debugging files will be expected in f:\random\edwin. By default, the information is searched for on the library path.

MITSCHEME_LOAD_OPTIONS

Specifies the location of the options database file used by the load-option procedure. The default is optiondb.scm on the library path.