[gtk: 1/2] meson: override gtk4 dependency

[Matthias Clasen <matthiasc src gnome org>]

commit 405dc7f557ac3737b45a99f4504c5a585f410a3a
Author: Xavier Claessens <xavier claessens collabora com>
Date:   Mon Mar 8 21:06:33 2021 -0500

    meson: override gtk4 dependency
    
    This allows applications that depends on gtk4 to build it as subproject
    without hardcoding 'gtk_dep' variable name in their build definition.

 meson.build | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/meson.build b/meson.build
index 145a848a86..d8ee3b6e9a 100644
--- a/meson.build
+++ b/meson.build
@@ -778,6 +778,7 @@ foreach pkg: pkgs
     subdirs: ['gtk-@0@'.format(gtk_api_version)],
     extra_cflags: gdk_extra_cflags + gsk_extra_cflags + gtk_extra_cflags,
   )
+  meson.override_dependency(pkg, libgtk_dep)
 endforeach
 
 if os_unix