parameters: (self)
docstring: Preparatory checks for whether this Executor can go ahead
          and (try to) build its targets.
docstring_summary: Preparatory checks for whether this Executor can go ahead
          and (try to) build its targets.
docstring_tokens: Preparatory checks for whether this Executor can go ahead and ( try to ) build its targets .
function: def prepare(self):
          """
          Preparatory checks for whether this Executor can go ahead
          and (try to) build its targets.
          """
          for s in self.get_all_sources():
              if s.missing():
                  msg = "Source `%s' not found, needed by target `%s'."
                  raise SCons.Errors.StopError(msg % (s, self.batches[0].targets[0]))
function_tokens: def prepare ( self ) : for s in self . get_all_sources ( ) : if s . missing ( ) : msg = "Source `%s' not found, needed by target `%s'." raise SCons . Errors . StopError ( msg % ( s , self . batches [ 0 ] . targets [ 0 ] ) )