Subzero. Adds x86-64 to the list of supported Subzero targets.

pnacl/build.sh

 #!/bin/bash
 # Copyright (c) 2012 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.
 #
 #@                 PNaCl toolchain build script
 #@-------------------------------------------------------------------
 #@ This script builds the ARM and PNaCl untrusted toolchains.
 #@ It MUST be run from the native_client/ directory.
 ######################################################################
@@ skipping 303 matching lines @@
     x86_64)
       targets=x86
       subzero_targets=X8664
       ;;
     armv7)
       targets=arm
       subzero_targets=ARM32
       ;;
     universal)
       targets=x86,arm,mips
-      subzero_targets=X8632,ARM32,MIPS32
+      subzero_targets=ARM32,MIPS32,X8632,X8664
       ;;
   esac
 
   spushd "${objdir}"
   # TODO(jvoung): remove ac_cv_func_getrusage=no once newlib has getrusage
   # in its headers.  Otherwise, configure thinks that we can link in
   # getrusage (stub is in libnacl), but we can't actually compile code
   # that uses ::getrusage because it's not in headers:
   # https://code.google.com/p/nativeclient/issues/detail?id=3657
   # Similar with getrlimit/setrlimit where struct rlimit isn't defined.
@@ skipping 688 matching lines @@
 
 if [ "$(type -t $1)" != "function" ]; then
   #Usage
   echo "ERROR: unknown function '$1'." >&2
   echo "For help, try:"
   echo "    $0 help"
   exit 1
 fi
 
 "$@"