new_contents: # cerbero - a multi-platform build system for Open Source software
  # Copyright (C) 2013 Andoni Morales Alastruey <ylatuya@gmail.com>
  #
  # This library is free software; you can redistribute it and/or
  # modify it under the terms of the GNU Library General Public
  # License as published by the Free Software Foundation; either
  # version 2 of the License, or (at your option) any later version.
  #
  # This library is distributed in the hope that it will be useful,
  # but WITHOUT ANY WARRANTY; without even the implied warranty of
  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  # Library General Public License for more details.
  #
  # You should have received a copy of the GNU Library General Public
  # License along with this library; if not, write to the
  # Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  # Boston, MA 02111-1307, USA.
  import os
  
  from cerbero.config import Platform
  from cerbero.utils import shell
  
  
  class ObjdumpLister():
  
      def list_deps():
          pass
  
  
  class OtoolLister():
  
      def list_deps(path):
          pass
  
  
  class LddLister():
  
      def list_deps(self, prefix,  path):
          files = shell.check_call('ldd %s' % path).split('\n')
          return [x.split(' ')[2] for x in files if prefix in x]
  
  
  class DepsTracker():
  
      BACKENDS = {
          Platform.WINDOWS: ObjdumpLister,
          Platform.LINUX: LddLister,
          Platform.DARWIN: OtoolLister}
  
      def __init__(self, platform, prefix):
          self.libs_deps = {}
          self.prefix = prefix
          if self.prefix[:-1] != '/':
              self.prefix += '/'
          self.lister = self.BACKENDS[platform]()
  
      def list_deps(self, path):
          deps = self.lister.list_deps(self.prefix, path)
          rdeps = []
          for d in deps:
              if os.path.islink(d):
                  rdeps.append(os.path.realpath(d))
          return [x.replace(self.prefix, '') for x in deps + rdeps]
  
subject: Add a new tool to list libraries deps