SDL: Wayland: Fix building with --disable-wayland-shared with libdecor.

From 18303c92bc01d6ae06d78829223b566461d7f7ff Mon Sep 17 00:00:00 2001
From: David Gow <[EMAIL REDACTED]>
Date: Wed, 28 Jul 2021 18:06:34 +0800
Subject: [PATCH] Wayland: Fix building with --disable-wayland-shared with

When wayland is not dynamically loaded (--enable-wayland-shared=no)
libdecor.h is not included unless SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC
is set, so it fails to build.  We can't simply move the libdecor.h
include above the #ifdef SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC block, as
libdecor.h itself #includes wayland headers we need to replace with
#defines. Instead, duplicate the #include.


Note that this doesn't fix any of the underlying issues of libdecor
being treated as part of wayland, it just fixes the build. A better
solution would probably be to decouple the wayland dynamic loading
from the libdecor dynamic loading completely, though that is a lot
more work...
 src/video/wayland/SDL_waylanddyn.h | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/video/wayland/SDL_waylanddyn.h b/src/video/wayland/SDL_waylanddyn.h
index f3e39453b..567c7bcea 100644
--- a/src/video/wayland/SDL_waylanddyn.h
+++ b/src/video/wayland/SDL_waylanddyn.h
@@ -18,7 +18,6 @@
      misrepresented as being the original software.
   3. This notice may not be removed or altered from any source distribution.
 #ifndef SDL_waylanddyn_h_
 #define SDL_waylanddyn_h_
@@ -68,7 +67,6 @@ void SDL_WAYLAND_UnloadSymbols(void);
 #define SDL_WAYLAND_INTERFACE(iface) extern const struct wl_interface *WAYLAND_##iface;
 #include "SDL_waylandsym.h"
 #ifdef __cplusplus
@@ -147,6 +145,12 @@ void SDL_WAYLAND_UnloadSymbols(void);
 #define libdecor_configuration_get_window_state (*WAYLAND_libdecor_configuration_get_window_state)
+#include <libdecor.h>
 #include "wayland-client-protocol.h"