repository revision -> header file?

I see SVN maintains a global revision number for a repository. I'd
like to access this revision number via a C or C++ header file, e.g.

  myproj/version.h:

  #define MYPROJ_REPOSITORY_REVISION $RepositoryRevision$

I.e. each time svn update is run, I'd like to get the same number
that is printed at the end ("Updated to revision 4548."):

  #define MYPROJ_REPOSITORY_REVISION 4548

This would allow me to easily adjust to evolving library code:

  #include <myproj/version.h>
  #if MYPROJ_REPOSITORY_REVISION < 4548
  // use old interfaces
  #else
  // use new interfaces
  #endif

Can this somehow be done with SVN?

Thank you in advance!

Cheers,
        Ralf

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Received on Fri May 12 00:58:29 2006