Add Clang static analyzer to Clang toolchain defs in GN

build/toolchain/clang_static_analyzer_wrapper.py

Index: build/toolchain/clang_static_analyzer_wrapper.py
diff --git a/build/toolchain/clang_static_analyzer_wrapper.py b/build/toolchain/clang_static_analyzer_wrapper.py
new file mode 100755
index 0000000000000000000000000000000000000000..cc13888f3c28ccda32266a3f7ca9e5996602cd5e
--- /dev/null
+++ b/build/toolchain/clang_static_analyzer_wrapper.py
@@ -0,0 +1,61 @@
+#!/usr/bin/env python
+# Copyright 2016 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.
+
+"""Invokes the Clang static analysis command using arguments provided on the
+command line.
+"""
+
+import argparse
+import fnmatch
+import os
+import shutil
+import sys
+import tempfile
+
+import wrapper_utils
+
+
+def main():
+  parser = argparse.ArgumentParser(description=__doc__)
+  parser.add_argument('--clang-cc-path',
+                      help='Path to the clang compiler.',
+                      metavar='PATH')
+  parser.add_argument('--clang-cxx-path',
+                      help='Path to the clang++ compiler',
+                      metavar='PATH')
+  parser.add_argument('--analyzer',
+                      help='Path to the language-specific Clang analysis tool.',
+                      required=True,
+                      metavar='PATH')
+  args, compile_args = parser.parse_known_args()
+
+  # Check that only one of --clang-cc-path or --clang-cxx-path are set.
+  assert ((args.clang_cc_path != None) != (args.clang_cxx_path != None))
+
+  is_cxx = args.clang_cxx_path != None
+  env = os.environ
+  env['CCC_ANALYZER_FORCE_ANALYZE_DEBUG_CODE'] = '0'
+  env['CCC_ANALYZER_OUTPUT_FORMAT'] = 'text'
+  clang_path = args.clang_cxx_path or args.clang_cc_path
+  if is_cxx:
+    env['CCC_CXX'] = clang_path
+    env['CLANG_CXX'] = clang_path
+  else:
+    env['CCC_CC'] = clang_path
+    env['CLANG'] = clang_path
+
+  # TODO(kmarshall): Place the summarized output in a useful directory.
+  temp_dir = tempfile.mkdtemp()
+  try:
+    env['CCC_ANALYZER_HTML'] = temp_dir
+    returncode, stderr = wrapper_utils.CaptureCommandStderr(
+        wrapper_utils.CommandToRun([args.analyzer] + compile_args), env)
+    sys.stderr.write(stderr)
+    return returncode
+  finally:
+    shutil.rmtree(temp_dir)
+
+if __name__ == "__main__":
+  sys.exit(main())