[Buildroot] [PATCH v3 7/7] package/gupnp-dlna: add optional dependency for gobject-introspection

[Thomas Petazzoni <thomas.petazzoni@bootlin.com>]

Hello,

On Sun, 29 Mar 2020 22:42:51 +0200
"Yann E. MORIN" <yann.morin.1998@free.fr> wrote:

> So, vala is _not_ needed to build with introspection.

Right, totally correct. HAVE_INTROSPECTION is used in
libgupnp-dlna/Makefile.am and vala/Makefile.am. In the former case,
Vala support is not needed.

> As such, we have three options:
> 
> 1. Forcibly bring a dependency ti host-vala and build vala bindings,
>    like Adam did;
> 
> 2. Add an option to gupnp-dlna to build vala bindings;

I would prefer this solution, but there may not even be a need to add
an option: there is an AC_PATH_PROG check for vapigen, so probably we
can feed some stupid autoconf cache variable to make sure vapigen is
not detected, even if available.

> 3. Add a vala/Config.in/host to manually enable vala, and thus
>    automatically build the vala bindings.

I would really prefer to handle the whole Vala binding thing once
someone really needs to do Vala stuff with gupnp-dlna.

Thomas
-- 
Thomas Petazzoni, CTO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com