On Thu, 7 Jun 2012, Stefan Weil wrote:
> Some versions declare open_by_handle_at, but don't define AT_EMPTY_PATH.
> Extend the check in configure to test both preconditions.
>
> Signed-off-by: Stefan Weil <[email protected]>
I have just noticed that this issue also affects QEMU 1.0.x, but we
don't have a check for virtfs there.
Maybe we need the original patch in the QEMU 1.0 stable tree?
> configure | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/configure b/configure
> index 799ad0f..f737f6c 100755
> --- a/configure
> +++ b/configure
> @@ -2816,7 +2816,11 @@ fi
> open_by_hande_at=no
> cat > $TMPC << EOF
> #include <fcntl.h>
> +#if !defined(AT_EMPTY_PATH)
> +# error missing definition
> +#else
> int main(void) { struct file_handle fh; return open_by_handle_at(0, &fh, 0);
> }
> +#endif
> EOF
> if compile_prog "" "" ; then
> open_by_handle_at=yes
> --
> 1.7.10
>
