[PATCH 2/2] util_lib: Silence ar informational message

[Simon Horman]

Hi Geoff,

On Thu, Oct 08, 2015 at 04:21:24PM -0700, Geoff Levand wrote:
> Add the -c option to ar to silence the informational
> message 'ar creating libutil.a'.  ar outputs this
> message to stderr, and some tools interpret this as
> a build warning.

I am wondering about the portability of -c.
I tried to find some documentation of it and drew a blank.
Do you have any thoughts on this?

> Signed-off-by: Geoff Levand <geoff at infradead.org>
> ---
>  util_lib/Makefile | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/util_lib/Makefile b/util_lib/Makefile
> index 54ccdc5..15b84e5 100644
> --- a/util_lib/Makefile
> +++ b/util_lib/Makefile
> @@ -18,5 +18,5 @@ $(UTIL_LIB): CPPFLAGS += -I$(srcdir)/util_lib/include
>  
>  $(UTIL_LIB): $(UTIL_LIB_OBJS)
>  	@$(MKDIR) -p $(@D)
> -	$(AR) rs $(UTIL_LIB) $(UTIL_LIB_OBJS)
> +	$(AR) rs -c $(UTIL_LIB) $(UTIL_LIB_OBJS)
>  
> -- 
> 2.5.0
>