RFR 8027059: (sctp) fatal warnings overly restrictive with gcc 4.8.1

[Dan Xu]

I was also stuck in this build issue when working with the new gcc in 
Ubuntu. Thanks for fixing the issue, Chris.

The change looks good to me.

-Dan


On 10/22/2013 11:44 AM, Chris Hegarty wrote:
> The SCTP native code complies with -Werror. gcc 4.8.1 reports unused 
> parameters as warnings, and this causes the build to fail. gcc 4.8.1 
> is the defaul on Ubuntu 13.10.
>
> These parameters are required as the functions are JNI functions. The 
> simplest solution is to ignore/suppress these unused param warnings.
>
> See discussion on:
> http://mail.openjdk.java.net/pipermail/build-dev/2013-July/009513.html
>
> diff --git a/makefiles/lib/NioLibraries.gmk 
> b/makefiles/lib/NioLibraries.gmk
> --- a/makefiles/lib/NioLibraries.gmk
> +++ b/makefiles/lib/NioLibraries.gmk
> @@ -150,7 +150,7 @@
>
>    ifneq ($(OPENJDK_TARGET_OS), macosx)
>
> -    SCTP_WERROR := -Werror
> +    SCTP_WERROR := -Werror -Wno-error=unused-parameter
>      ifeq ($(OPENJDK_TARGET_CPU_ARCH), ppc)
>        SCTP_WERROR :=
>      endif
>
> With this change it may be possible to remove the special casing of 
> ppc? I would need to check, but this could be handled separately.
>
> -Chris.