Update gtk3 to 3.24.23 & use clang (#4385)

* Update to 3.24.23 & use clang

* fix llvm dependency

packages/gtk3.rb

@@ -3,23 +3,10 @@ require 'package'
 class Gtk3 < Package
   description 'GTK+ is a multi-platform toolkit for creating graphical user interfaces.'
   homepage 'https://developer.gnome.org/gtk3/3.0/'
-  version '3.24.9'
+  version '3.24.23'
   compatibility 'all'
-  source_url 'https://download.gnome.org/sources/gtk+/3.24/gtk+-3.24.9.tar.xz'
-  source_sha256 '577eb0270d9adf2eb2aa4b03f9c7873fadb20cf265194d0139570f738493e635'
-
-  binary_url ({
-    aarch64: 'https://dl.bintray.com/chromebrew/chromebrew/gtk3-3.24.9-chromeos-armv7l.tar.xz',
-     armv7l: 'https://dl.bintray.com/chromebrew/chromebrew/gtk3-3.24.9-chromeos-armv7l.tar.xz',
-       i686: 'https://dl.bintray.com/chromebrew/chromebrew/gtk3-3.24.9-chromeos-i686.tar.xz',
-     x86_64: 'https://dl.bintray.com/chromebrew/chromebrew/gtk3-3.24.9-chromeos-x86_64.tar.xz',
-  })
-  binary_sha256 ({
-    aarch64: '45f35424d4861f51e2f5a0db47326917dd79dd0bdf2985416150c972b8e73afb',
-     armv7l: '45f35424d4861f51e2f5a0db47326917dd79dd0bdf2985416150c972b8e73afb',
-       i686: 'c1aea89a1dd4e99399fb14c876694930818826b40d004b51f6fdf5017a772d0e',
-     x86_64: '733220ec0f0d4eb5d51c03b76d9c06564440a77ddc2ff3c63dca8ba2ed72380c',
-  })
+  source_url 'https://download.gnome.org/sources/gtk+/3.24/gtk+-3.24.23.tar.xz'
+  source_sha256 '5d864d248357a2251545b3387b35942de5f66e4c66013f0962eb5cb6f8dae2b1'
 
   depends_on 'gdk_pixbuf'
   depends_on 'iso_codes'
@@ -35,8 +22,11 @@ class Gtk3 < Package
   depends_on 'shared_mime_info'
   depends_on 'six' => :build
   depends_on 'xdg_base'
+  depends_on 'llvm' => :build
 
   def self.build
+    # Using clang enables the lld linker, hopefully allowing ChromeOS libs like libgles to be used.
+    ENV['CC'] = "clang"
     system './configure',
            '--with-x',
            '--enable-cups',