not a fixed compiler in MAKECMD

Hello,

I have a problem setting my compiler path within .tmf file, MAKECMD. Up to now I have had a fixed path to determine compiler's host folder ("C:\Archivos de programa\Microsoft eMbedded C++ 4.0\Common\EVC\Bin\nmake") but I want to make it path independant an use a global variable to read the compiler path rather than fix it. I want to resolve it the same way Matlab's path is read from >MATLAB_ROOT<.

Is there any way of doing this?

Thank you in advance,

Nuria