Patchwork build: support for Linux 3.7 UAPI

In Linux 3.7, nfnetlink.h moved below include/uapi/. Make configure
recognize that. Furthermore, we can drop the unnecessary indirection
via backticks and just ask grep directly if there was any result.
---
Also available via

	git://git.inai.de/ipset master

 configure.ac |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

Hi Jan,

On Thu, 22 Nov 2012, Jan Engelhardt wrote:

> In Linux 3.7, nfnetlink.h moved below include/uapi/. Make configure
> recognize that. Furthermore, we can drop the unnecessary indirection
> via backticks and just ask grep directly if there was any result.

The patch is applied and pushed into the ipset git tree, thanks.

Best regards,
Jozsef 

> diff --git a/configure.ac b/configure.ac
> index 7a6aa33..dea392d 100644
> --- a/configure.ac
> +++ b/configure.ac
> @@ -68,7 +68,8 @@ fi
>  
>  AC_PROG_GREP
>  
> -if test "X`$GREP 'NFNL_SUBSYS_IPSET' $ksourcedir/include/linux/netfilter/nfnetlink.h`" = "X"
> +if ! $GREP -q "NFNL_SUBSYS_IPSET" "$ksourcedir/include/linux/netfilter/nfnetlink.h" && \
> +   ! $GREP -q "NFNL_SUBSYS_IPSET" "$ksourcedir/include/uapi/linux/netfilter/nfnetlink.h";
>  then
>  	AC_MSG_ERROR([The kernel source directory $ksourcedir is not patched with netlink.patch to support ipset])
>  fi
> -- 
> 1.7.10.4
> 
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-
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