[CMake] CTest - how to get update info for project stored in SVN using svn:externals

[smrcka at 1sig.cz]

Hi,
our project consists of multiple applications built against our own 
generic library. Every application and the library is stored in  the 
same repository. For each application we have individual CMakeLists.txt 
and the generic library is checked out via svn:externals.
The project directory layout is:
/
    -appl
       - <application_1>
          - CMakeLists.txt
          ...
       - <application_N>
          - CMakeLists.txt
     -src (generic library via svn:externals)
During NightlyBuild 'src' directory is updated via 
CTEST_EXTRA_UPDATES_1. Is it possible to include update info for such 
'svn:externals' directories? Or is there another way how to include svn 
update info for directories which lies outside the project root directory?
Maybe the directory layout is silly but we haven't found better way how 
to organize it. I can explain reasons why we chose such layout who will 
be interested.

Thanks for any thought
Petr

-- 
Petr Smrčka <smrcka at 1sig dot cz>
První Signální, a.s.
Czech Republic