[GRASS5] [bug #1870] (grass) could not get the gui to lanch

[Request Tracker]

this bug's URL: http://intevation.de/rt/webrt?serial_num=1870
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Subject: could not get the gui to lanch

Platform: other
grass obtained from: Mirror of Trento site
grass binary for platform: Compiled from Sources

Got Grass to install and lunch but when I try to lunch the gui, i get the following error message 
appears

WARNING:  The wish command (wish) was not fount!
 Pleasee check your GRASS_WISH enviroment variable

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