[LLVMdev] [PATCH] llvm-config: add svn revision to --version

[Frits van Bommel]

David Greene wrote:
> There's an easy way to fix these kinds of problems.  Deprecate interfaces for
> one release.  I brought this up before but the idea was quickly shot down.
> It's insane to litter your code with #ifdefs based on SVN revisions.
> 
> This is exactly the kind of situation that the LLVM community needs to 
> address.  Changing APIs is fine.  Ripping out old versions without first
> deprecating them for a release causes nightmares all around.

On the other hand, I've found code breakage to be a very good motivator to fix 
it right away :).
(In some cases, even before anyone (including me) ever saw the error...)