--- a/mingwmake.bat	Tue Mar 19 10:29:51 2013 +0100
+++ b/mingwmake.bat	Tue Mar 19 10:29:54 2013 +0100
@@ -4,7 +4,9 @@
 @REM do not edit - automatically generated from ProjectDefinition
 @REM -------
 
-@call ..\..\stx\rules\find_mingw.bat
+@pushd ..\..\stx\rules
+@call find_mingw.bat
+@popd
 make.exe -N -f bc.mak %USEMINGW_ARG% %*