Merge remote-tracking branch 'origin/patches-2.0'

configure.ac

@@ -816,6 +816,15 @@ if test x$enable_gcc_warnings != xno && test "$GCC" = "yes"; then
     # Disable the unused-function warnings, because these trigger
     # for minheap-internal.h related code.
     CFLAGS="$CFLAGS -Wno-unused-function"
+
+    # clang on macosx emits warnigns for each directory specified which
+    # isn't "used" generating a lot of build noise (typically 3 warnings
+    # per file
+    case "$host_os" in
+        darwin*)
+            CFLAGS="$CFLAGS -Qunused-arguments"
+        ;;
+    esac
   fi
 
 ##This will break the world on some 64-bit architectures