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

[Brad King]

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