[sheepdog] [PATCH] sheepfs: use big_writes option only when the version of libfuse is equal or greater than 2.8.0

[Liu Yuan]

On Wed, Aug 28, 2013 at 03:27:13PM +0800, Robin Dong wrote:
> When using sheepfs on rhel5 environment, it will report:
> 
>     fuse: unknown option `big_writes'
> 
> because the 'big_writes' option is only supported by libfuse with version >= 2.8.0.
> 
> So we should add check for version of libfuse in configure.ac.
> 
> Signed-off-by: RobinDong <sanbai at taobao.com>
> ---
>  configure.ac   |    8 ++++++++
>  sheepfs/core.c |    2 ++
>  2 files changed, 10 insertions(+), 0 deletions(-)
> 
> diff --git a/configure.ac b/configure.ac
> index 9e878f5..6ab58cc 100644
> --- a/configure.ac
> +++ b/configure.ac
> @@ -323,6 +323,14 @@ if test "x${enable_sheepfs}" = xyes; then
>  		[#define _FILE_OFFSET_BITS 64])
>  	AC_DEFINE_UNQUOTED([HAVE_SHEEPFS], 1, [have sheepfs])
>  	PACKAGE_FEATURES="$PACKAGE_FEATURES sheepfs"
> +	for FUSE_SO_FILE in /lib/libfuse.so /lib64/libfuse.so /lib/libfuse.so.2 /lib64/libfuse.so.2; do
> +		if [[[ -a $FUSE_SO_FILE ]]]; then
> +			if [[[ `file $FUSE_SO_FILE|awk -F"libfuse.so.|'" '{print $(NF-1)}'|sed s/\\\.//g` -ge 280 ]]]; then
> +				AC_DEFINE_UNQUOTED([FUSE_SUPPORT_BIGWRITES], 1, [Support -obig_writes for fuse])
> +				break;
> +			fi
> +		fi
> +	done
>  fi

Maybe better take use of pkgconfig/fuse.pc to get version?

Thanks
Yuan