[CMake] add_subdirectory and build directory

[Michael Wild]

On 11. Sep, 2009, at 16:45, Bill Hoffman wrote:

>
>> That's NOT what add_subdirectory is made for. It is intended for  
>> adding a sub-directory in the source tree. So, if your directory  
>> structure looks like this (i.e. B is a sub-project of A)
>> A/CMakeLists.txt
>> A/B/CMakeLists.txt
>> things are simple:
>> A/CMakeLists.txt:
>
> Actually add_subdirectory does support the notion of out-of-source  
> source.   So, a source directory in does not have to be a direct sub- 
> directory on disk.
>
> -Bill

True, but then you wouldn't point it at a binary directory. AFAIK, if  
you point project A at an out-of-source source, say project B, that  
project B will be built completely within the binary tree of A.

Michael
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