Port r288424 to gn.

build/config/compiler/BUILD.gn

 # Copyright (c) 2013 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")
 if (cpu_arch == "arm") {
   import("//build/config/arm.gni")
 }
 if (is_posix) {
   import("//build/config/gcc/gcc_version.gni")
@@ skipping 257 matching lines @@
 
     defines += [ "ANDROID" ]
     if (!is_android_webview_build) {
       # The NDK has these things, but doesn't define the constants
       # to say that it does. Define them here instead.
       defines += [ "HAVE_SYS_UIO_H" ]
     }
 
     # Use gold for Android for most CPU architectures.
     if (cpu_arch == "x86" || cpu_arch == "x64" || cpu_arch == "arm") {
+      ldflags += [ "-fuse-ld=gold" ]
       if (is_clang) {
-        # Clang does not support -fuse-ld to invoke the built-in gold linker,
-        # so use the -B option which requires us to specify the path.
-        ldflags += [
-          "-B" + rebase_path("//build/android/arm-linux-androideabi-gold",
-                             root_build_dir)
-        ]
-      } else {
-        ldflags += [ "-fuse-ld=gold" ]
+        # Let clang find the ld.gold in the NDK.
+        ldflags += [ "--gcc-toolchain=" + rebase_path(android_toolchain_root,
+                                                      root_build_dir) ]
       }
     }
 
     ldflags += [
       "-Wl,--no-undefined",
       # Don't export symbols from statically linked libraries.
       "-Wl,--exclude-libs=ALL",
     ]
     if (cpu_arch == "arm") {
       ldflags += [
@@ skipping 593 matching lines @@
   } else {
     cflags = [ "-g1" ]
   }
 }
 
 config("no_symbols") {
   if (!is_win) {
     cflags = [ "-g0" ]
   }
 }