Add a tool to validate ecs library dependencies.

The embedded content_shell starting point for applications such as the
ChromeCast shell must not include dependencies that would increase its
memory footprint. This script automatically tests that it does not contain
undesired dependencies.

BUG=none

Review URL: https://codereview.chromium.org/58603003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@234716 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 80 insertions, 0 deletions

diff --git a/tools/check_ecs_deps/check_ecs_deps.py b/tools/check_ecs_deps/check_ecs_deps.py
new file mode 100755
index 0000000..e6a2001
--- /dev/null
+++ b/tools/check_ecs_deps/check_ecs_deps.py
@@ -0,0 +1,80 @@
+#!/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.
+
+''' Verifies that builds of the embedded content_shell do not included
+unnecessary dependencies.'''
+
+import getopt
+import os
+import re
+import string
+import subprocess
+import sys
+import optparse
+
+kUndesiredLibraryList = [
+  'libcairo',
+  'libpango',
+  'libglib',
+]
+
+binary_target = 'content_shell'
+
+def _main():
+  parser = optparse.OptionParser(
+      "usage: %prog -b <dir> --target <Debug|Release>")
+  parser.add_option("-b", "--build-dir",
+                    help="the location of the compiler output")
+  parser.add_option("--target", help="Debug or Release")
+
+  options, args = parser.parse_args()
+  # Bake target into build_dir.
+  if options.target and options.build_dir:
+    assert (options.target !=
+            os.path.basename(os.path.dirname(options.build_dir)))
+    options.build_dir = os.path.join(os.path.abspath(options.build_dir),
+                                     options.target)
+
+  if options.build_dir != None:
+      target = os.path.join(options.build_dir, binary_target)
+  else:
+    target = binary_target
+
+  forbidden_regexp = re.compile(string.join(kUndesiredLibraryList, '|'))
+  success = 0
+
+  p = subprocess.Popen(['ldd', target], stdout=subprocess.PIPE,
+      stderr=subprocess.PIPE)
+  out, err = p.communicate()
+
+  if err != '':
+    print "Failed to execute ldd to analyze dependencies for " + target + ':'
+    print '    ' + err
+    print "FAILED\n"
+    return 1
+
+  if out == '':
+    print "No output to scan for forbidden dependencies?\n"
+    print "\nFAILED\n"
+    return 1
+
+  success = 1
+  deps = string.split(out, '\n')
+  for d in deps:
+      if re.search(forbidden_regexp, d) != None:
+        success = 0
+        print "Forbidden library: " +  d
+
+  if success == 1:
+    print "\nSUCCESS\n"
+    return 0
+  else:
+    print "\nFAILED\n"
+    return 1
+
+if __name__ == "__main__":
+  # handle arguments...
+  # do something reasonable if not run with one...
+  sys.exit(_main())