[CMake] Setting new file extensions

[Brad King]

Filipe Sousa wrote:
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> I'm trying to add a new file extension through
> CMAKE_CXX_SOURCE_FILE_EXTENSIONS but it doesn't work because the global
> generator reads the variable before I had a chance to set the variable
> 
> SET(CMAKE_CXX_SOURCE_FILE_EXTENSIONS
>   ${CMAKE_CXX_SOURCE_FILE_EXTENSIONS} moc)
> 
> Is there another way to do this?

That variable is meant for communication between the CMake/Modules 
directory and the generator and was not to my knowledge intended for 
users to change.  It would be nice to be able to add extensions for 
languages though so please add a feature request:

http://www.cmake.org/Bug

-Brad