<div class="gmail_quote">On Wed, Mar 4, 2009 at 12:02 AM, Michael Wild <span dir="ltr"><<a href="mailto:themiwi@gmail.com">themiwi@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
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If you add a subdirectory, it inherits all variables and macros from the parent directories. This is actually what one expects, otherwise you would have to repeat the whole system detection (find_pacakge, find_library, find_path etc.) in every subdirectory. The reverse, however is not true. By default, variables (I'm not sure about macros) don't propagate into the parent scope, unless one uses the PARENT_SCOPE option or adds the variable to the cache which makes it global.</blockquote>
</div><br>That makes perfect sense and works as I would expect. However, I'm
seeing the behavior you state should not happen. That is, the macros
defined in the child directory are somehow propagating up to the parent.<br>