meson: contain and check simple-dmabuf-egl deps

Check the egl, glesv2 and gbm dependencies locally instead of relying on
the dep_* variables from the top level meson.build or
libweston/meson.build (dep_gbm).

This should make these dependencies now explicitly checked when the app
is built, rather than relying on other components doing the checks. If
the drm-backend was disabled, this would have probably hit an error
using the undeclared variable dep_gbm.

Signed-off-by: Pekka Paalanen <pq@iki.fi>

clients/meson.build

@@ -61,11 +61,9 @@ simple_clients = [
 		],
 		'dep_objs': [
 			dep_wayland_client,
-			dep_libdrm_headers,
-			dep_gbm,
-			dep_egl,
-			dep_glesv2
-		]
+			dep_libdrm_headers
+		],
+		'deps': [ 'egl', 'glesv2', 'gbm' ]
 	},
 	{
 		'name': 'dmabuf-v4l',

meson.build

@@ -154,9 +154,7 @@ dep_libm = cc.find_library('m')
 dep_libdl = cc.find_library('dl')
 dep_libdrm = dependency('libdrm', version: '>= 2.4.68')
 dep_libdrm_headers = dep_libdrm.partial_dependency(compile_args: true)
-dep_egl = dependency('egl', required: false)
 dep_wl_egl = dependency('wayland-egl')
-dep_glesv2 = dependency('glesv2', required: false)
 dep_threads = dependency('threads')
 
 subdir('protocol')