[CMake] Restrictions on where a binary can be put?

[Michael Hertling]

On 01/09/2011 09:09 PM, Andreas Pakulat wrote:
> On 09.01.11 21:05:21, Andreas Pakulat wrote:
>> On 09.01.11 14:24:16, Michael Hertling wrote:
>>> On 01/09/2011 12:58 PM, Andreas Pakulat wrote:
>>>> Hi,
>>>>
>>>> I'm having a bit of a problem here changing the runtime output directory
>>>> for a binary. Its an executable target named 'setup' and I'd like to put it
>>>> into the top-level directory. Unfortunately it always ends up in the bin/
>>>> directory, which is what CMAKE_RUNTIME_OUTPUT_DIRECTORY is being set to.
>>>>
>>>> I'm using
>>>>     set_target_properties( setup PROPERTIES RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR} )
>>>> after creating the target currently, which should work as far as I can see
>>>> from the documentation. Are there maybe any restrictions on what the
>>>> directory may be or what targets can be put there?
>>>>
>>>> If not, any suggestions how to debug this? I can see that the build.make
>>>> does already have the rule setup for putting the binary into bin/, so it
>>>> must be going wrong somewhere in the generation stage, but a simple cmake
>>>> --trace doesn't show up anything suspicious. Is there a switch to follow
>>>> the steps that cmake does during makefile-generation?
>>>
>>> Could you provide a minimal but complete example?
>>
>> Ok, attached case produces the error. Apparently the problem is fetching
>> the LOCATION property from the target and setting the
>> RUNTIME_OUTPUT_DIRECTORY afterwards. Looks like a cmake bug to me, so
>> I'll file a report.
> 
> Ooops, forgot the attachment :)

Now, I can confirm the issue; indeed, the GET_TARGET_PROPERTY() on the
LOCATION apparently renders the following SET_TARGET_PROPERTY() on the
RUNTIME_OUTPUT_DIRECTORY ineffective. As I cannot see any reason for
this, I'd agree that it should be considered as a bug. Besides, my
example was pointless: A simple clash of an executable "main" with
a subdirectory of the same name in CMAKE_BINARY_DIR, sorry. :/

Regards,

Michael