Brad King 674c56c3fc if: Document that macro arguments are not variables (#13393) ...

A common mistake is to write

 macro(foo arg)
   if(arg)
   endif()
 endmacro()

and expect if() to treat "arg" as a variable.  The documentation of the
macro() command already states that arguments are not variables, but
users writing the if() command may not look at the macro() docs.
Add a note to the if() documentation.

2012-07-11 10:40:04 -04:00

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