[Sheepdog] [PATCH] fix autoconf warnings

[Liu Yuan]

On 05/10/2012 10:47 PM, Christoph Hellwig wrote:

> It seems like newer autoconf versions need code that is test compiled
> to be enclosed by a AC_LANG_SOURCE macro.
> 
> Signed-off-by: Christoph Hellwig <hch at lst.de>
> 
> Index: sheepdog/configure.ac
> ===================================================================
> --- sheepdog.orig/configure.ac	2012-05-10 16:34:09.183990201 +0200
> +++ sheepdog/configure.ac	2012-05-10 16:34:13.471990160 +0200
> @@ -142,7 +142,7 @@ AC_CONFIG_FILES([Makefile
>  cc_supports_flag() {
>  	local CFLAGS="$@"
>  	AC_MSG_CHECKING([whether $CC supports "$@"])
> -	AC_COMPILE_IFELSE([int main(){return 0;}] ,
> +	AC_COMPILE_IFELSE([AC_LANG_SOURCE([int main(){return 0;}])] ,
>  			  [RC=0; AC_MSG_RESULT([yes])],
>  			  [RC=1; AC_MSG_RESULT([no])])
>  	return $RC


Applied, thanks,

Yuan