GN: Use NaCl's newlib objdump for PNaCl

build/config/nacl/rules.gni

 # Copyright 2015 The Native Client 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/features.gni")
 import("//build/config/nacl/config.gni")
 
 # Generate a nmf file
 #
 # Native Client Manifest (nmf) is a JSON file that tells the browser where to
@@ skipping 18 matching lines @@
                              "data_deps",
                              "executables",
                              "lib_prefix",
                              "nmf",
                              "nmfflags",
                              "public_deps",
                              "stage_dependencies",
                              "testonly",
                            ])
 
-    objdump = rebase_path("${nacl_toolprefix}objdump")
+    # TODO(phosek): Remove this conditional once
+    # https://bugs.chromium.org/p/nativeclient/issues/detail?id=4339 is
+    # resolved.
+    if (current_cpu == "pnacl") {
+      objdump = rebase_path("${nacl_toolchain_bindir}/x86_64-nacl-objdump")
+    } else {
+      objdump = rebase_path("${nacl_toolprefix}objdump")
+    }
     if (host_os == "win") {
       objdump += ".exe"
     }
 
     script = "//native_client_sdk/src/tools/create_nmf.py"
     inputs = [
       objdump,
     ]
     sources = executables
     outputs = [
@@ skipping 88 matching lines @@
     } else {
       arch = target_cpu
     }
     args = [
       "--program=" + rebase_path(executable, root_build_dir),
       "--arch=${arch}",
       "--output=" + rebase_path(nmf, root_build_dir),
     ]
   }
 }