Referencing enums in other protocols

[Pekka Paalanen]

On Mon, 23 Apr 2018 03:42:31 -0400
Simon Ser <contact at emersion.fr> wrote:

> Hi all,
> 
> While writing a protocol, I've been trying to reference symbols from another
> protocol. While it seems to work fine for interfaces, it fails for enums:
> 
>     error: could not find enumeration wl_output.transform
> 
> Is this by design? It seems odd to me that interfaces work but enums don't.

Hi,

I think that's an oversight. It should indeed be possible to reference
enums just like interfaces from other protocol files.

The cause for the failure is that wayland-scanner wants to check that
the enum name is valid, and if it is a bitfield then the type must be
uint. But obviously this is not possible if the enum definition is not
available.

I can see two possible courses of action: drop the check, or add a way
to provide additional protocol files for "external references".


Thanks,
pq
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