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Environment variables accessed during startup

The table below describes the environment variables that are read during startup. They are listed in the order in which they are accessed. For more information on environment variables, see "Environment variables" .

Environment variable
Purpose
MODEL_TECH
set by ModelSim to the directory in which the binary executables reside (e.g., ../modeltech/<platform>/)
MODEL_TECH_OVERRIDE
provides an alternative directory for the binary executables; MODEL_TECH is set to this path
MODELSIM
identifies path to the modelsim.ini file
MGC_WD
identifies the Mentor Graphics working directory (set by Mentor Graphics tools)
MGC_LOCATION_MAP
identifies the path to the location map file; set by ModelSim if not defined
MODEL_TECH_TCL
identifies the path to all Tcl libraries installed with ModelSim
HOME
identifies your login directory (UNIX only)
MGC_HOME
identifies the path to the MGC tool suite
TCL_LIBRARY
identifies the path to the Tcl library; set by ModelSim to the same path as MODEL_TECH_TCL; must point to libraries supplied by Model Technology
TK_LIBRARY
identifies the path to the Tk library; set by ModelSim to the same path as MODEL_TECH_TCL; must point to libraries supplied by Model Technology
TIX_LIBRARY
identifies the path to the Tix library; set by ModelSim to the same path as MODEL_TECH_TCL; must point to libraries supplied by Model Technology
ITCL_LIBRARY
identifies the path to the [incr]Tcl library; set by ModelSim to the same path as MODEL_TECH_TCL; must point to libraries supplied by Model Technology
ITK_LIBRARY
identifies the path to the [incr]Tk library; set by ModelSim to the same path as MODEL_TECH_TCL; must point to libraries supplied by Model Technology
VSIM_LIBRARY
identifies the path to the Tcl files that are used by ModelSim; set by ModelSim to the same path as MODEL_TECH_TCL; must point to libraries supplied by Model Technology
MTI_LIB_DIR
identifies the path to all Tcl libraries installed with ModelSim
MODELSIM_TCL
identifies the path to the modelsim.tcl file; this environment variable can be a list of file pathnames, separated by semicolons (Windows) or colons (UNIX)


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