language-objc fails to preprocess & parse Foundation header on OSX 10.11

[iand675]

The following code fails when it hits the math.h header:

import Language.ObjC
import Language.ObjC.System

-- Example framework header location /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk/System/Library/Frameworks/Cocoa.framework/Headers/Cocoa.h

main :: IO ()
main = print =<< parseCFile (newGCC "clang") Nothing  [] "/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk/System/Library/Frameworks/Foundation.framework/Headers/Foundation.h"

Results in:

Left /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk/usr/include/math.h:565: (column 72) [ERROR]  >>> Syntax Error !
  Syntax error !
  The symbol `=' does not fit here.

I've tried specifying both gcc and clang as the compiler, but neither works.