[CMake] Odd CMake/KWWidgets behaviour

[dean.inglis at camris.ca]

I ran into some odd CMake behaviour using both
Borland Developer Studio 2006 on WinXP and
Borland C++ Builder 6  on Win 2k.  In both cases
I was building KWWidgets (cvs) against a shared build
of VTK (cvs) using latest CMake cvs. 
Cmake stops after notification of the VTK_DIR cache entry 
as it should but there is NO CMakeCache.txt file in
the build dir!

-- Check for working C compiler: bcc32
-- Check for working C compiler: bcc32 -- works
-- Check size of void*
-- Check size of void* - done
-- Check for working CXX compiler: bcc32
-- Check for working CXX compiler: bcc32 -- works
-- Configuring done
VTK not found.  Set the VTK_DIR cmake cache entry
to the directory containing VTKConfig.cmake 

etc. etc.

Here are the contents of the KWWidgets build dir:

.:
CMakeFiles
CMakeTestGNU.obj
CMakeTestGNU.tds

./CMakeFiles:
CMakeCCompiler.cmake
CMakeCXXCompiler.cmake
CMakeOutput.log
CMakeSystem.cmake
CMakeTmp

./CMakeFiles/CMakeTmp:
CMakeFiles

./CMakeFiles/CMakeTmp/CMakeFiles:
cmTryCompileExec.dir

./CMakeFiles/CMakeTmp/CMakeFiles/cmTryCompileExec.dir:


This does NOT occur with CMake 2.0.6 and 2.2.3.
My workaround is to just add a CMakeCache.txt with one
cache entry for VTK_DIR.   


Dean