cogl 1.12.0

- Upgrade to 1.12.0
- Add an option to build `without-x` like cairo
- Add a dep on x11 by default because it uses cairo and pango
- Make the x11 dep active if X11 is installed
- Works well with superenv & clutter

Closes Homebrew/homebrew#15633.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>

Formula/cogl.rb

@@ -2,22 +2,29 @@ require 'formula'
 
 class Cogl < Formula
   homepage 'http://wiki.clutter-project.org/wiki/Cogl'
-  url 'http://ftp.gnome.org/pub/gnome/sources/cogl/1.10/cogl-1.10.4.tar.xz'
-  sha256 '0b5c9989f1d07dbda000a68640eb7ebf734513d52e3707668c41eed19991adf9'
+  url 'http://ftp.gnome.org/pub/gnome/sources/cogl/1.12/cogl-1.12.0.tar.xz'
+  sha256 '4e7b5abbf0a1e51d74618db1b513551e7c71b486e17e98373f4db93e7710e2f2'
 
   head 'git://git.gnome.org/cogl'
 
+  option 'without-x', 'Build without X11 support'
+
   depends_on 'pkg-config' => :build
   depends_on 'xz' => :build
   depends_on 'glib'
   depends_on 'pango'
   depends_on 'cairo' # needs cairo-gobject
+  depends_on :x11 if MacOS::X11.installed? or not build.include? 'without-x'
 
   def install
     system "./autogen.sh" if build.head?
-    system "./configure", "--disable-dependency-tracking",
-                          "--prefix=#{prefix}",
-                          "--disable-introspection"
+    args = %W[
+      --disable-dependency-tracking
+      --prefix=#{prefix}
+      --disable-introspection
+    ]
+    args << '--without-x' if build.include? 'without-x'
+    system './configure', *args
     system "make install"
   end
 end