--- a/mingwmake.bat	Sun Feb 03 12:30:59 2013 +0100
+++ b/mingwmake.bat	Mon Feb 04 13:14:52 2013 +0100
@@ -4,5 +4,5 @@
 @REM do not edit - automatically generated from ProjectDefinition
 @REM -------
 
-@call $(TOP)\rules\find_mingw.bat
+@call ..\rules\find_mingw.bat
 make.exe -N -f bc.mak %USEMINGW_ARG% %*