Re: clang warnings

Austin,

I've already merged two changesets into 7.8.3 - https://github.com/ghc/ghc/commit/52222f9e0bedc9b08b46619f8ed4d09f645d6ed4 and https://github.com/ghc/ghc/commit/fd4169f9caf6922e3e5ea9c31f497f7220fc62b8 - which add -Qunused-arguments to the C compiler invocation if the compiler is Clang. The GHC but is #9047

(The problem was Clang will ignore a lot of the flags we pass in the assembler stage, since it will be used as the assembler). So I don't think a workaround will be needed.

Great. I confirmed that I can validate both GHC HEAD and the ghc-7.8 branch on Mac WITHOUT ghc-clang-wrapper. --Kazu