Fix linker warning on build with target_arch=ia32.

build/linux/system.gyp

 # Copyright (c) 2012 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.
 
 {
   'variables': {
     'conditions': [
       ['sysroot!=""', {
         'pkg-config': '<(chroot_cmd) ./pkg-config-wrapper "<(sysroot)" "<(target_arch)"',
       }, {
@@ skipping 723 matching lines @@
       'type': 'none',
       'conditions': [
         ['_toolset=="target" and use_cups==1', {
           'direct_dependent_settings': {
             'cflags': [
               '<!@(libgcrypt-config --cflags)',
             ],
           },
           'link_settings': {
             'libraries': [
-              '<!@(libgcrypt-config --libs)',
+              # libgcrypt-config does not support --libs-only-l options,
+              # and the result contains -L options, which shouldn't be in
+              # the entries of 'libraries'. So filter them out.
+              '<!@(libgcrypt-config --libs | sed -e \'s/-L[^ ]*//g\')',
             ],
           },
         }],
       ],
     },
     {
       'target_name': 'libpci',
       'type': 'static_library',
       'cflags': [
         '<!@(<(pkg-config) --cflags libpci)',
@@ skipping 244 matching lines @@
             ],
             'libraries': [
               '<!@(<(pkg-config) --libs-only-l libudev)',
             ],
           },
         }],
       ],
     },
   ],
 }