[CMake] Depending on a Config File (CMake and VC++)

[David Cole]

This is the point where we say: just don't do in-source builds... :-)
Use separate directories for source and binary trees.

2 cents,
David

Brad King wrote:

> Steve Johns wrote:
>
>> ELSE(CMAKE_CONFIGURATION_TYPES)
>>   # Handle single-configuration generators.
>>   CONFIGURE_FILE(${CMAKE_CURRENT_SOURCE_DIR}/traps_config.txt
>>                  ${CMAKE_CURRENT_BINARY_DIR}/traps_config.txt COPYONLY)
>> ENDIF(CMAKE_CONFIGURATION_TYPES)
>>
>>> Be careful with this.  For an in-source build this may not work.  
>>> That is why my original example included a ".in" extension on the 
>>> input file.
>>
>>
>> I don't really understand that part but I did try this, as an experiment
>
>
> If the build directory and source directory are the same then this may 
> try to copy the file onto itself.  I think CMake may just not copy it 
> but I'm not sure what would happen with the dependency when the file 
> changed since it is never newer than itself.
>
> -Brad
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