+
subversion_wc_info(${CMAKE_CURRENT_SOURCE_DIR} SVNINFO)
This will fail when we're not inside a working copy (see
http://www.vtk.org/Bug/view.php?id=10200), because the macro outputs
an error in this case.
We call it conditionally based on whether the .svn folder
exists at the
root of your source tree, indicating a working copy; otherwise we get
-rUNKNOWN.
Regards,
Amine.