mtops.h is perfect now

build-linux

@@ -81,6 +81,7 @@ Run `make modules_install` after `make`.
             metavar='extra-make-args',
             nargs='*'
         )
+        self._add_argument('--force-rebuild')
 
     def build(self):
         build_dir = self.get_build_dir()
@@ -108,6 +109,8 @@ Run `make modules_install` after `make`.
             'CC={}'.format(cc), LF,
             'O={}'.format(build_dir), LF,
         ] + verbose
+        if self.env['force_rebuild']:
+            common_make_args.extend(['-B', LF])
         if self.env['configure']:
             if self.env['custom_config_target']:
                 base_config_given = True