The following environment variables are used by all XicTools programs.
It is possible to run Xic and WRspice without a license server, and to run XicII/Xiv from a license server. The status is set with the environment variable XT_AUTH_MODE. This variable has meaning if set to one of the keywords ``Server'' or ``Local''
If set to ``Server'', XicII and Xiv will validate through a license server the same way as Xic and WRspice normally do. If set to ``Local'', Xic and WRspice will be self-validating the way XicII normally is.
Xic and/or WRspice users on a single licensed workstation may prefer to set the environment variable in their shell startup file and not use the external license server.
When the programs look for the LICENSE file in ``Local'' mode, if the file is not found in the startup or license directories, the programs will look in the home and current directories, in that order, unless XT_LICENSE_PATH is also set.
If the program is started with the XT_SYSTEM_MALLOC environment variable set, then the program will use the standard memory manager provided by the operating system.
There are several environment variables which can be used to alter some of the WRspice defaults. On startup, WRspice checks for the following variables in the environment, and alters internal defaults accordingly. The defaults can be modified when the program is built, the defaults listed below are those assigned in the distribution.