meson: add subproject fallback for libxcvt

Depends on:
xorg/lib/libxcvt!6

Signed-off-by: Simon Ser <contact@emersion.fr>

meson.build

@@ -194,7 +194,7 @@ if (host_machine.system() != 'darwin' and
     endif
 endif
 xorgsdkdir = join_paths(get_option('prefix'), get_option('includedir'), 'xorg')
-libxcvt_dep = dependency('libxcvt', required: build_xorg)
+libxcvt_dep = dependency('libxcvt', fallback: ['libxcvt', 'libxcvt_dep'], required: build_xorg)
 
 build_xwayland = false
 if (host_machine.system() != 'darwin' and
@@ -211,7 +211,7 @@ if (host_machine.system() != 'darwin' and
         xwayland_dep = [
             dependency('wayland-client', version: wayland_req, required: xwayland_required),
             dependency('wayland-protocols', version: wayland_protocols_req, required: xwayland_required),
-            dependency('libxcvt', required: xwayland_required),
+            dependency('libxcvt', fallback: ['libxcvt', 'libxcvt_dep'], required: xwayland_required),
         ]
 
         if build_glamor