Make the build control what library(/ies) to load

build/android/gcc_preprocess.py

+#!/usr/bin/env python
+#
+# Copyright 2013 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.
+
+import optparse
+import os
+import subprocess
+import sys
+
+from pylib import build_utils
+
+def DoGcc(options):
+  build_utils.MakeDirectory(os.path.dirname(options.output))
+
+  gcc_cmd = [
+      'gcc',                 # invoke host gcc.
+      '-E',                  # stop after preprocessing.
+      '-D', 'ANDROID',       # Specify ANDROID define for pre-processor.
+      '-x', 'c-header',      # treat sources as C header files
+      '-P',                  # disable line markers, i.e. '#line 309'
+      '-I', options.include_path,
+      '-o', options.output,
+      options.template
+      ]
+
+  build_utils.CheckCallDie(gcc_cmd)
+
+
+def main(argv):
+  parser = optparse.OptionParser()
+  parser.add_option('--include-path', help='Include path for gcc.')
+  parser.add_option('--template', help='Path to template.')
+  parser.add_option('--output', help='Path for generated file.')
+  parser.add_option('--stamp', help='Path to touch on success.')
+
+  # TODO(newt): remove this once http://crbug.com/177552 is fixed in ninja.
+  parser.add_option('--ignore', help='Ignored.')
+
+  options, _ = parser.parse_args()
+
+  DoGcc(options)
+
+  if options.stamp:
+    build_utils.Touch(options.stamp)
+
+
+if __name__ == '__main__':
+  sys.exit(main(sys.argv))
+
+