Check for and disallow rules the process the output of other rules

test/chained-rules/chained-rules.gyp

+# Copyright (c) 2012 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.
+
+{
+  'targets': [
+    {
+      'target_name': 'chained_rules',
+      'type': 'none',
+      'sources': [
+        'input.wxs',
+      ],
+      'outputs': [
+        '<(PRODUCT_DIR)/input.msi',
+      ],
+      'rules': [
+        {
+          'rule_name': 'candle',
+          'extension': 'wxs',
+          'outputs': [
+            '<(INTERMEDIATE_DIR)/input.wixobj',
+          ],
+          'process_outputs_as_sources': 1,
+          'msvs_cygwin_shell': 0,
+          'action': [
+            'python', 'copyfile.py',
+            '<(RULE_INPUT_PATH)',
+            '<@(_outputs)'
+          ],
+          'message': 'Generating <@(_outputs)',
+        },
+        {
+          'rule_name': 'light',
+          'extension': 'wixobj',
+          'outputs': [
+            '<(PRODUCT_DIR)/<(RULE_INPUT_ROOT).msi',
+            '<(PRODUCT_DIR)/<(RULE_INPUT_ROOT).wixpdb',
+          ],
+          'msvs_cygwin_shell': 0,
+          'action': [
+            'python', 'copyfile.py',
+            '<(RULE_INPUT_PATH)',
+            '<(PRODUCT_DIR)/<(RULE_INPUT_ROOT).msi'
+          ],
+          'message': 'Generating <(PRODUCT_DIR)/<(RULE_INPUT_ROOT).msi',
+        },
+      ],
+    },
+  ]
+}