[CMake] How to determine origin of variable

[Martin Weber]

Am 25.08.2011 17:39, schrieb David Cole:
> On Thu, Aug 25, 2011 at 7:34 AM, Martin Weber<m.weber at razorcat.com>  wrote:
>> Hi all,
>>
>> is there a way in CMake to detect, whether a variable has been set on the
>> command-line (with the -D option) and not in a CMakelists.txt?
>>
>> For example, GNU-make has the origin function do do something similar.
>>
>> Thanks,
>>   Martin
>>
>> --
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>
> No, there's no way to tell.
>
> Why do you ask?

My CMakelists.txt changes the value of CMAKE_INSTALL_PREFIX by replacing 
the trailing directory. But it should do this only if the user did not 
specify a value on the commandline.


-- 
E-Mails sollten Text sein, Text und nur Text.
Wenn Gott gewollt hätte, dass E-Mails in HTML geschrieben würden,
endeten Gebete traditionell mit </amen>.