I'm trying to build GHC HEAD on Mac OS after a fresh git-pull, and I'm getting the following:

    libraries/binary/src/Data/Binary/Put.hs:38:27:
         error: token is not a valid binary operator in a preprocessor subexpression
    #if MIN_VERSION_bytestring(0,10,4)

Any insights/suggestions?

I don't need the very latest HEAD version; just a version with ticket 11651 fixed (https://ghc.haskell.org/trac/ghc/ticket/11651#comment:3), and even for that item, I don't mind patching the source myself.

Thanks!  - Conal