The PRECOMPILECMD= and PRELINKCMD= directives are for performing
      actions just before the compile process starts, or just before the
      linking process starts.

      Please note the following behaviour!

      The PRECOMPILECMD= directive will NOT run if there is nothing to
      compile!

      The PRELINKCMD= directive will NOT run if there is nothing to
      link!

      You can use either of these commands to run any DOS program or
      batch file.

      If you need to run another batch file, remember to use the CALL
      batch file command, like:

      PRECOMPILECMD=CALL PRECOMP.BAT

      PRELINKCMD=DEL SOMEFILE.XXX