Build libelf with host and not target toolchain.

third_party/elfutils/elfutils.gyp

 # 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.
 
 {
   'targets': [
     {
       'target_name': 'libelf',
-      'toolsets': ['target'],
+      'toolsets': ['host'],
       'type': 'static_library',
       'defines': [
         '_GNU_SOURCE',
         'HAVE_CONFIG_H',
       ],
       'cflags': [
         '-std=gnu99',
         '-Wall',
         '-Wshadow',
         '-Werror',
@@ skipping 136 matching lines @@
         'src/libelf/libelf_next_prime.c',
         'src/libelf/nlist.c',
       ],
       'direct_dependent_settings': {
         'include_dirs': [
           './src/libelf',
         ],
       },
     }],
 }