Add Link-Time Optimizations support for Android.

third_party/opus/opus.gyp

 # Copyright (c) 2012 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.
 
 {
   'variables': {
     'conditions': [
       ['target_arch=="arm" or target_arch=="armv7" or target_arch=="arm64"', {
         'use_opus_fixed_point%': 1,
       }, {
@@ skipping 22 matching lines @@
       'include_dirs': [
         'src/celt',
         'src/include',
         'src/silk',
       ],
       'direct_dependent_settings': {
         'include_dirs': [
           'src/include',
         ],
       },
-      'includes': ['opus_srcs.gypi', ],
+      'includes': [
+        'opus_srcs.gypi',
+        # Disable LTO due to ELF section name out of range
+        # crbug.com/422251
+        '../../build/android/disable_lto.gypi',
+      ],
       'sources': ['<@(opus_common_sources)'],
       'conditions': [
         ['OS!="win"', {
           'defines': [
             'HAVE_LRINT',
             'HAVE_LRINTF',
             'VAR_ARRAYS',
           ],
         }, {
           'defines': [
@@ skipping 40 matching lines @@
           ],
           'sources': ['<@(opus_fixed_sources)'],
           'conditions': [
             ['use_opus_arm_optimization==1', {
               'defines': [
                 'OPUS_ARM_ASM',
                 'OPUS_ARM_INLINE_ASM',
                 'OPUS_ARM_INLINE_EDSP',
               ],
               'includes': [
                 'opus_srcs_arm.gypi',

[tlegrand1, 2014/10/11 08:23:21]

Not needed here?

[Fabrice (no longer in Chrome), 2014/10/13 15:45:12]

No, LTO just is very brittle.
What happens is that if you throw too much data at it, LTO complains and
crashes, which is why some targets are disabled due to "ELF section name out of
range"

               ],
               'conditions': [
                 ['use_opus_rtcd==1', {
                   'defines': [
                     'OPUS_ARM_MAY_HAVE_EDSP',
                     'OPUS_ARM_MAY_HAVE_MEDIA',
                     'OPUS_ARM_MAY_HAVE_NEON',
                     'OPUS_HAVE_RTCD',
                   ],
                   'includes': [
                     'opus_srcs_rtcd.gypi',

[tlegrand1, 2014/10/11 08:23:21]

Or here?

[Fabrice (no longer in Chrome), 2014/10/13 15:45:12]

Same, see above.

                   ],
                 }],
               ],
             }],
           ],
         }],
       ],
     },  # target opus
     {
       'target_name': 'opus_demo',
@@ skipping 21 matching lines @@
       'sources': [
         'src/src/opus_demo.c',
       ],
       'include_dirs': [
         'src/celt',
         'src/silk',
       ],
     },  # target opus_demo
   ]
 }