[CMake] How to write a correct wrapper of MESSAGE()?

[Clark WANG]

I'm trying to write some MESSAGE() wrappers like info(), warning(),
fatal(), etc which may be a bit easier to use. But I failed to simulate the
correct MESSAGE() behavior no matter I use MACRO or FUNCTION. For example:

  MACRO(info_mac_1)
      message("[MACRO 1] " ${ARGV})
  ENDMACRO()
  MACRO(info_mac_2)
      message("[MACRO 2] " "${ARGV}")
  ENDMACRO()
  FUNCTION(info_fun_1)
      message("[FUNC 1] " ${ARGV})
  ENDFUNCTION()
  FUNCTION(info_fun_2)
      message("[FUNC 2] " "${ARGV}")
  ENDFUNCTION()

  message("foo;bar")
  info_mac_1("foo;bar")

  message(foo bar)
  info_mac_2(foo bar)

  message("foo;bar")
  info_fun_1("foo;bar")

  message(foo bar)
  info_fun_2(foo bar)

The output (tested with 2.8.8) would be like this:

  foo;bar
  [MACRO 1] foobar
  foobar
  [MACRO 2] foo;bar
  foo;bar
  [FUNC 1] foobar
  foobar
  [FUNC 2] foo;bar

As you can see all the 4 commands I defined did not work the same way as
MESSAGE(). So how should I define a correct wrapper on MESSAGE()?

Thanks.

-Clark
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