Last gyp patch for cross-platform Unix support

third_party/zlib/zlib.gyp

 # Copyright (c) 2009 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 {
   'variables': {
     'conditions': [
-      [ 'OS=="linux" or OS=="freebsd"', {
+      [ 'os_posix == 1 and OS != "mac" and OS != "openbsd"', {
         # Link to system .so since we already use it due to GTK.
         # TODO(pvalchev): OpenBSD is purposefully left out, as the system
         # zlib brings up an incompatibility that breaks rendering.
         'use_system_zlib%': 1,
-      }, {  # OS!="linux" and OS!="freebsd"
+      }, {  # os_posix != 1 or OS == "mac" or OS == "openbsd"
         'use_system_zlib%': 0,
       }],
     ],
   },
   'conditions': [
     ['use_system_zlib==0', {
       'targets': [
         {
           'target_name': 'zlib',
           'type': 'static_library',
@@ skipping 81 matching lines @@
       ],
     }],
   ],
 }
 
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