- Make the test_extension (a shared library) build in PIC.

runtime/bin/bin.gypi

 # Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 {
   'variables': {
     'io_cc_file': '<(SHARED_INTERMEDIATE_DIR)/io_gen.cc',
     'io_patch_cc_file': '<(SHARED_INTERMEDIATE_DIR)/io_patch_gen.cc',
     'builtin_in_cc_file': 'builtin_in.cc',
     'builtin_cc_file': '<(SHARED_INTERMEDIATE_DIR)/builtin_gen.cc',
@@ skipping 517 matching lines @@
               'AdditionalDependencies': [ 'dart.lib' ],
               'AdditionalLibraryDirectories': [ '<(PRODUCT_DIR)' ],
             },
           },
         }],
         ['OS=="mac"', {
           'xcode_settings': {
             'OTHER_LDFLAGS': [ '-undefined', 'dynamic_lookup' ],
           },
         }],
+        ['OS=="linux"', {
+          'cflags': [
+            '-fPIC',
+          ],
+        }],
       ],
     },
   ],
 }