maco_optional_find_package magic

[Jeff Mitchell]

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Jeff Mitchell wrote:
> Alexander Neundorf wrote:
>> On Friday 13 March 2009, Jeff Mitchell wrote:
>> ...
>>> If you don't mind, here's a CMakeLists.txt and the corresponding
>>> FindTaglibExtras.cmake...can you see if you can spot why this might be
>>> happening?

Thanks for all your help.  Doing some message output made me figure out
where the problem was coming from.

The issue was mainly me not understanding the error I was seeing.  I
thought that the issue was that CMake wasn't finding a variable that it
wanted to find in its module...but the problem was a big fat AND at the
end of that statement: AND I was using those variables in other
CMakeLists.txt files without appropriate _FOUND checks to guard it. (I
had thought they would simply just default to an empty string and not
cause a problem, but apparently this is not the case).

Thanks again,
Jeff


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