code: def TryLink( self, text, extension ):
          
          return self.TryBuild(self.env.Program, text, extension )
docs: Compiles the program given in text to an executable env.Program,
          using extension as file extension (e.g. '.c'). Returns 1, if
          compilation was successful, 0 otherwise. The target is saved in
          self.lastTarget (for further processing).