Re: Adding some text to INSTALL

[Sean Whitton <spwhitton@spwhitton.name>]

Hello,

On Mon 10 Jan 2022 at 08:50PM +08, Po Lu wrote:

> If nobody minds, I'll install the following text in INSTALL, above
> "DETAILED BUILDING AND INSTALLATION":
>
> * Alternative window systems
>
> If you want to use Emacs on one of the alternative window systems
> available on GNU/Linux and some Unix systems, such as Wayland or
> Broadway, you can install the PGTK port of Emacs, which utilizes the
> GTK+ toolkit to support them, by passing '--with-pgtk' to configure,
> like this:
>
> 	./configure --with-pgtk
>
> Keep in mind that the only toolkit which will work with this option is
> GTK+ version 3, and specifying any X-specific configuration option is an
> error when it is enabled.
>
> Afterwards, you will be able to switch between X, Wayland and Broadway
> using the 'GDK_BACKEND' environment variable.  GTK+ should automatically
> detect and use the correct value for your system, but you may have to
> specify it manually.  For example, you must run Emacs like this to force
> GTK+ to run under Broadway:
>
> 	GDK_BACKEND=broadway emacs ...
>
> Where '...' denotes any further options you may want to pass to Emacs.
>
> GNUstep also has support for the Wayland window system.  If that is what
> you want, see nextstep/INSTALL.

As a pgtk user, LGTM.

-- 
Sean Whitton