[CMake] Multiple SET_SOURCE_FILES_PROPERTIES on one file

[Mathieu Malaterre]

Hello,

  I'd like to be able to do something like this in cmake (*):

...
SET_SOURCE_FILES_PROPERTIES(foo.c   COMPILE_FLAGS -DVERSION1 )
ADD_EXECUTABLE(foo_v1 foo.c)

SET_SOURCE_FILES_PROPERTIES(foo.c   COMPILE_FLAGS -DVERSION2 )
ADD_EXECUTABLE(foo_v2 foo.c)
...

  Right now -DVERSION2 is the value used in both case, whereas I would
like to use one define for one target, and the other define for the
other target.
  Is there a way to achieve this in CMake ?

Thanks,
Mathieu

(*)
http://gdcm.svn.sourceforge.net/viewvc/gdcm/Sandbox/CMakeBug/3/CMakeLists.txt?view=markup