[CMake] Recursively calling a macro: Is this possible in CMake?

[James Bigler]

This code seems to produce the correct output with either a macro or a
function prototype.

macro( foo )
  list( APPEND my_list "+" )
  list( LENGTH my_list length )
  if( length LESS ${somevar} )
    foo()
  endif()
  # Add this line in for functions
  set( my_list ${my_list} PARENT_SCOPE )
endmacro()

set(somevar 100)
set(my_list "")
foo()
message("my_list = ${my_list}")


My guess is that the code isn't necessarily inlined, but interpreted on the
fly with special rules about variable scope.

James

On Fri, Jan 16, 2009 at 4:39 PM, Robert Dailey <rcdailey at gmail.com> wrote:

> Hi,
>
> Suppose I have a macro that rougly behaves like this:
>
> macro( foo )
>   list( APPEND my_list <something> )
>   if( <foo's length is less than certain number> )
>     foo()
>   endif()
> endmacro()
>
> How would this be processed in CMake? Obviously you couldn't inline this
> macro because it's recursive. I need to do something like this to
> recursively iterate target dependencies and append all of their includes to
> a single, flattened list.
>
> Thanks.
>
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