Restrict relocation packing to Release build.

build/android/gyp/pack_arm_relocations.py

 #!/usr/bin/env python
 #
 # Copyright 2014 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.
 
 """Pack ARM relative relocations in a library (or copy unchanged).
 
-If --enable-packing, invoke the relocation_packer tool to pack the .rel.dyn
-section in the given library files.  This step is inserted after the libraries
-are stripped.  Packing adds a new .android.rel.dyn section to the file and
-reduces the size of .rel.dyn accordingly.
+If --enable-packing and --configuration-name=='Release', invoke the
+relocation_packer tool to pack the .rel.dyn section in the given library
+files.  This step is inserted after the libraries are stripped.  Packing
+adds a new .android.rel.dyn section to the file and reduces the size of
+.rel.dyn accordingly.
 
 Currently packing only understands ARM32 shared libraries.  For all other
 architectures --enable-packing should be set to zero.  In this case the
 script copies files verbatim, with no attempt to pack relative relocations.
 
 Any library listed in --exclude-packing-list is also copied verbatim,
 irrespective of any --enable-packing setting.  Typically this would be
 'libchromium_android_linker.so'.
 """
 
@@ skipping 31 matching lines @@
 def CopyArmLibraryUnchanged(library_path, output_path):
   if not build_utils.IsTimeStale(output_path, [library_path]):
     return
 
   shutil.copy(library_path, output_path)
 
 
 def main():
   parser = optparse.OptionParser()
 
+  parser.add_option('--configuration-name',
+      default='Release',
+      help='Gyp configuration name (i.e. Debug, Release)')
   parser.add_option('--enable-packing',
       choices=['0', '1'],
-      help='Pack relocations if 1, otherwise plain file copy')
+      help=('Pack relocations if 1 and configuration name is \'Release\','
+            ' otherwise plain file copy'))
   parser.add_option('--exclude-packing-list',
       default='',
       help='Names of any libraries explicitly not packed')
   parser.add_option('--android-pack-relocations',
       help='Path to the ARM relocations packer binary')
   parser.add_option('--android-objcopy',
       help='Path to the toolchain\'s objcopy binary')
   parser.add_option('--stripped-libraries-dir',
       help='Directory for stripped libraries')
   parser.add_option('--packed-libraries-dir',
       help='Directory for packed libraries')
   parser.add_option('--libraries-file',
       help='Path to json file containing list of libraries')
   parser.add_option('--stamp', help='Path to touch on success')
 
   options, _ = parser.parse_args()
-  enable_packing = options.enable_packing == '1'
+  enable_packing = (options.enable_packing == '1' and
+                    options.configuration_name == 'Release')
   exclude_packing_set = set(shlex.split(options.exclude_packing_list))
 
   with open(options.libraries_file, 'r') as libfile:
     libraries = json.load(libfile)
 
   build_utils.MakeDirectory(options.packed_libraries_dir)
 
   for library in libraries:
     library_path = os.path.join(options.stripped_libraries_dir, library)
     output_path = os.path.join(options.packed_libraries_dir, library)
 
     if enable_packing and library not in exclude_packing_set:
       PackArmLibraryRelocations(options.android_pack_relocations,
                                 options.android_objcopy,
                                 library_path,
                                 output_path)
     else:
       CopyArmLibraryUnchanged(library_path, output_path)
 
   if options.stamp:
     build_utils.Touch(options.stamp)
 
   return 0
 
 
 if __name__ == '__main__':
   sys.exit(main())