[Libguestfs] [PATCH libnbd] lib: Use symbol versions.

[Daniel P. Berrangé]

On Sat, Jul 27, 2019 at 02:19:47PM +0100, Richard W.M. Jones wrote:
> This patch adds support for symbol versions.  It is based on what
> libvirt does.
> 
> The generated syms file looks like:
> 
> LIBNBD_1.0 {
>   global:
>     nbd_...;
>     nbd_...;
>   local: *;
> };
> 
> In a future stable 1.2 release, new symbols would go into a new
> section which would look like this:
> 
> LIBNBD_1.2 {
>   global:
>     nbd_new_symbol;
>     nbd_another_new_symbol;
>   local: *;
> } LIBNBD_1.0;
> 
> In my testing the ‘local:’ label is needed.  For some reason libvirt
> doesn’t use it.

We do use it - just note that src/libvirt_public.syms is *not* what
is used to link. We combine that file with libvirt_private.syms too,
and when combining, add the "local: *" bit to the result.


Regards,
Daniel
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