Get tag (not revision) into C & perl programs

Hi

I'm a recent refugee from PRCS and am kind of stuck on a problem.
PRCS has major/minor version keywords which I can get into my
programs easily:

  /* $Format: "#define PROJECT_VER_MAJ $ProjectMajorVersion$" $ */
  #define PROJECT_VER_MAJ 5
  /* $Format: "#define PROJECT_VER_MIN $ProjectMinorVersion$" $ */
  #define PROJECT_VER_MIN 39

and then I have my programs print

  This is program (version 5.39)

when they operate verbosely. I get that for subversion I need to use
tags to hold the human-readable release-version, and these are
disconnected from the revision. I guess that I will need to do some
scripting in order to get a release version into my C & perl programs.
Im thinking a script that
 - pulls a release-version.txt file from the repository
 - read and increments the version in that file to "5.30"
 - checks the file back in
 - checks out a C header and writes the release-version as a #define RELVER
5.30
 - checks the file back in
 - creates the tagged release as tags/program-5.30

This is OK for C. But I have around 60 perl programs which use the same
PCRS mechanism:

  # The version: $Format: my "\$version = \"$ProjectVersion$\";"$
  my $version = "5.39";

So this is going to get cumbersome. I've searched around but can't find
a slick way to do this. I've seen the FAQ on getting the revision into C,
but I'm after insertng the *tag*

I'd be most grateful for suggestions

Jim

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