You could also try to use 'subst' to shorten the path:

Code
C:\Users\michael\mamesvn>subst x: C:\Users\michael\mamesvn
C:\Users\michael\mamesvn>x:
X:>make -j5 TARGET=mess ...
...
X:>c:
C:\Users\michael\mamesvn>subst x: /d

A mind is like a parachute. It doesn't work unless it's open. [Frank Zappa]