variable number of arguments to functions

[Noel Yap]

Is there a way for me to write a function that has no maximum number of 
arguments?  For example, I'd like to be able to do:

  $(call exec-commands,echo bar, ls foo)
  $(call exec-commands,echo another, ls this, ls that)
  $(call exec-commands,echo one more, ls aoeu, ls ueoa, ls snth)

and so on.

Thanks,
Noel