--- a/bmake.bat	Wed May 29 13:48:52 2013 +0200
+++ b/bmake.bat	Wed May 29 13:49:03 2013 +0200
@@ -3,6 +3,10 @@
 @REM type bmake, and wait...
 @REM do not edit - automatically generated from ProjectDefinition
 @REM -------
-make.exe -N -f bc.mak %*
+@SET DEFINES=
+@REM Kludge got Mercurial, cannot be implemented in Borland make
+@FOR /F "tokens=*" %%i in ('hg root') do SET HGROOT=%%i
+@IF "%HGROOT%" NEQ "" SET DEFINES=%DEFINES% "-DHGROOT=%HGROOT%"
+make.exe -N -f bc.mak  %DEFINES% %*