[CMake] adding same subdirectory multiple times.

[Andreas Pakulat]

On 11.03.10 09:56:35, Mika.Rajala at patria.fi wrote:
> 
> Hi
> 
> The problem:
> 
> >From a shared CMakeLists.txt i get the following error when defining a
> library target.
> Policy CMP0002 is not set: Logival target names must be globally unique.
> 
> 
> The situation:
> 
> Let's assume i have the following cmake files in the following folders with
> the svn:externals properties.
> 
> C:\project\CMakeLists.txt
> add_subdirectory(ProjectA)
> add_subdirectory(ProjectB)
> 
> C:\project\ProjectA   (svn:externals LibraryA <svn_path_to_libA>)
> add_subdirectory(LibraryA)
> 
> c:\project\ProjectB    (svn:externals LibraryA <svn_path_to_libA>)
> add_subdirectory(LibraryA)
> 
> c:\project\LibraryA
> add_library(LibraryA)
> 
> Thoughts:
> 
> I don't know if this causes any problem, I tried reading some
> documentations but I couldn't figure it out.

Yes it does. The library target is defined multiple times, thats not
possible. Each version of "LibraryA/CMakeLists.txt" has to use its own
name for LibraryA if you want that directory layout to work. Target
names must be globally unique as the error message says.