[PATCH] D18987: Make available a macro LLVM_REVISION that is populated with the svn/git revision.

[Sean Silva via llvm-commits]

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This revision now requires changes to proceed.

This is sort of thorny.

The revision number will change every time I update my checkout, and llvm-config.h is pretty much at the root of the header dependency graph, so basically everything will be recompiled (this will e.g. make "incremental" buildbots useless).

On the other hand, if `LLVM_REVISION_STRING` is not updated on each checkout, then it is not reliable and that is sort of pointless.


http://reviews.llvm.org/D18987