Compile BoringSSL for arm64 iOS

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.
 
 # Config for us and everybody else depending on BoringSSL.
 config("openssl_config") {
   include_dirs = []
   include_dirs += [ "src/include" ]
   if (is_component_build) {
     defines = [ "BORINGSSL_SHARED_LIBRARY" ]
@@ skipping 72 matching lines @@
   } else if (current_cpu == "x86") {
     if (is_mac) {
       sources += gypi_values.boringssl_mac_x86_sources
     } else if (is_linux || is_android) {
       sources += gypi_values.boringssl_linux_x86_sources
     } else if (is_win) {
       deps += [ ":boringssl_asm" ]
     } else {
       defines += [ "OPENSSL_NO_ASM" ]
     }
   } else if (current_cpu == "arm") {

[davidben, 2015/04/06 21:54:39]

The arm/armv7 thing doesn't apply to GN too, does it? I don't see an current_cpu
== "armv7" lines. This probably wants an is_linux || is_android check here too?

     sources += gypi_values.boringssl_linux_arm_sources
-  } else if (current_cpu == "arm64") {
+  } else if (current_cpu == "arm64" && (is_linux || is_android)) {
     sources += gypi_values.boringssl_linux_aarch64_sources
   } else {
     defines += [ "OPENSSL_NO_ASM" ]
   }
 }