intel-vaapi-driver: make call to wl_drm optional

per #200

extra/intel-vaapi-driver/build

@@ -1,5 +1,7 @@
 #!/bin/sh -e
 
+patch -p1 < wl_drm-optional.patch
+
 export DESTDIR="$1"
 
 meson setup \

extra/intel-vaapi-driver/checksums

@@ -1 +1,2 @@
 0cae7a2d39fe72ec01461d49133e2660d34fe43aaba904b679b1f12664d07a852b
+66dbb0a67dede66d0ce91c5456b05ca7655031c43a86ed70c504268462ed2ef300

extra/intel-vaapi-driver/patches/wl_drm-optional.patch

@@ -0,0 +1,33 @@
+diff --git a/src/i965_output_wayland.c b/src/i965_output_wayland.c
+index a6120b7b2..a002cae5b 100644
+--- a/src/i965_output_wayland.c
++++ b/src/i965_output_wayland.c
+@@ -154,7 +154,7 @@ registry_handle_global(
+     struct va_wl_output * const wl_output = i965->wl_output;
+     struct wl_vtable * const wl_vtable = &wl_output->vtable;
+ 
+-    if (strcmp(interface, "wl_drm") == 0) {
++    if (strcmp(interface, "wl_drm") == 0 && wl_vtable->drm_interface) {
+         wl_output->wl_drm_name = name;
+         wl_output->wl_drm = registry_bind(wl_vtable, wl_output->wl_registry,
+                                           name, wl_vtable->drm_interface,
+@@ -472,6 +472,7 @@ i965_output_wayland_init(VADriverContextP ctx)
+ 
+     wl_vtable = &i965->wl_output->vtable;
+ 
++    /* drm_interface is optional */
+     if (vtable->wl_interface)
+         wl_vtable->drm_interface = vtable->wl_interface;
+     else {
+@@ -483,9 +484,8 @@ i965_output_wayland_init(VADriverContextP ctx)
+         }
+ 
+         dso_handle = i965->wl_output->libegl_handle;
+-        if (!dso_get_symbols(dso_handle, wl_vtable, sizeof(*wl_vtable),
+-                             libegl_symbols))
+-            goto error;
++        dso_get_symbols(dso_handle, wl_vtable, sizeof(*wl_vtable),
++                        libegl_symbols);
+     }
+ 
+     i965->wl_output->libwl_client_handle = dso_open(LIBWAYLAND_CLIENT_NAME);

extra/intel-vaapi-driver/sources

@@ -1 +1,2 @@
 https://github.com/intel/intel-vaapi-driver/archive/2.4.1.tar.gz
+patches/wl_drm-optional.patch