C# compiler puts .tmp files on root. Can I redirect?

Question

Attempting to run a C# build with the command line compiler in a ClearCase VOB. CSC tries to place many .tmp files on the VOB root, which is read-only. This cannot be changed. Is there a way to tell CSC.exe to place these tmp file elsewhere?

Eric Friedl · Answer

Thanks for the quick reply! The SET command returned C:\ for both Variables. By looking at msinfo32.exe I see many entries for both TEMP and TMP! TEMP %SystemRoot%\TEMP TEMP %USERPROFILE%\Local Settings\Temp NT AUTHORITY\SYSTEM TEMP %USERPROFILE%\Local Settings\Temp NT AUTHORITY\LOCAL SERVICE TEMP %USERPROFILE%\Local Settings\Temp NT AUTHORITY\NETWORK SERVICE TEMP %USERPROFILE%\Local Settings\Temp EDGE\clearcase_albd TEMP %USERPROFILE%\Local Settings\Temp EDGE\EFriedl TEMP %USERPROFILE%\Local Settings\Temp EFRIEDL-DT\ASPNET TMP %SystemRoot%\TEMP TMP %USERPROFILE%\Local Settings\Temp NT AUTHORITY\SYSTEM TMP %USERPROFILE%\Local Settings\Temp NT AUTHORITY\LOCAL SERVICE TMP %USERPROFILE%\Local Settings\Temp NT AUTHORITY\NETWORK SERVICE TMP %USERPROFILE%\Local Settings\Temp EDGE\clearcase_albd TMP %USERPROFILE%\Local Settings\Temp EDGE\EFriedl TMP %USERPROFILE%\Local Settings\Temp EFRIEDL-DT\ASPNET Either one should divert away from my VOB (A:). Apparently CSC doesn't care about these variables.

Sam Hobbs · Answer

What do you have for the Temp and Tmp environment variables? My guess is that that is where CSC determines where to create temporary files and that they are not set or are not set properly. To look at the environment variables just go to a command prompt and type set and enter or go to Start | Run and type msinfo32.exe and click Ok. Expand the Environment Variables node. To modify temporary variables go to Control Panel | System and then click on Advanced System Settings. Then in the Advanced tab click on the Environment Variables button at the lower right.