Build 64bit browser for Android with clang for ARMv8

third_party/boringssl/BUILD.gn

 # 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.
 
 import("//build/config/android/config.gni")
 import("//build/config/sanitizers/sanitizers.gni")
 import("//testing/libfuzzer/fuzzer_test.gni")
 
 # Config for us and everybody else depending on BoringSSL.
 config("external_config") {
@@ skipping 49 matching lines @@
     }
   }
 } else {
   source_set("boringssl_asm") {
     visibility = [ ":*" ]  # Only targets in this file can depend on this.
 
     sources = []
     asmflags = []
     include_dirs = [ "src/include" ]
 
-    if (current_cpu == "arm" && is_clang) {
-      # TODO(hans) Enable integrated-as (crbug.com/124610).
-      asmflags += [ "-fno-integrated-as" ]
+    if ((current_cpu == "arm" || current_cpu == "arm64") && is_clang) {
+      if (current_cpu == "arm") {
+        # TODO(hans) Enable integrated-as (crbug.com/124610).
+        asmflags += [ "-fno-integrated-as" ]
+      }
       if (is_android) {
         rebased_android_toolchain_root =
             rebase_path(android_toolchain_root, root_build_dir)
 
         # Else /usr/bin/as gets picked up.
         asmflags += [ "-B${rebased_android_toolchain_root}/bin" ]

[Nico, 2016/05/12 22:40:23]

The only other thing this if does is add the -B flag, which isn't used without
-fno-integrated-as. Can you just revert the changes to this file completely?
(but as-is is fine too if you'll follow up in this area anyhow)

       }
     }
 
     if (is_msan) {
       public_configs = [ ":no_asm_config" ]
     } else if (current_cpu == "x64") {
       if (is_mac || is_ios) {
         sources += gypi_values.boringssl_mac_x86_64_sources
       } else if (is_linux || is_android) {
         sources += gypi_values.boringssl_linux_x86_64_sources
@@ skipping 94 matching lines @@
 
 fuzzer_test("boringssl_server_bio_write_fuzzer") {
   sources = [
     "src/fuzz/server.cc",
   ]
   deps = [
     ":boringssl_fuzzer",
   ]
   seed_corpus = "src/fuzz/server_corpus"
 }