Hi, I don't know whether or not this is new but it's worth sharing.
To test the coming GHC 7.8.3, I started to use the latest ghc-7.8 branch. Unfortunately, on my Mac, I saw many warnings which are not displayed with GHC 7.8.2:
clang: warning: argument unused during compilation: '-fno-stack-protector' clang: warning: argument unused during compilation: '-D TABLES_NEXT_TO_CODE' clang: warning: argument unused during compilation: '-I test' clang: warning: argument unused during compilation: '-I dist/build/spec/spec-tmp' clang: warning: argument unused during compilation: '-I dist/build/spec/spec-tmp' clang: warning: argument unused during compilation: '-I dist/build/autogen' clang: warning: argument unused during compilation: '-I dist/build/spec/spec-tmp'
Is this a known issue?
This is due to clang of Xcode 5.1. I found that the "-Qunused-arguments" option of clang disables these warnings. I think that "ghc-clang-wrapper" should include this option. --Kazu