Introduce a new ARMSIMDBC configuration.

tools/gyp/configurations.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': {
     'common_gcc_warning_flags': [
       '-Wall',
       '-Wextra', # Also known as -W.
       '-Wno-unused-parameter',
@@ skipping 408 matching lines @@
 
       'ProductSIMDBC64': {
         'inherit_from': [
           'Dart_Base', 'Dart_simdbc_Base', 'Dart_Product',
           'Dart_<(dart_target_os)_Base',
           'Dart_<(dart_target_os)_simdbc64_Base',
           'Dart_<(dart_target_os)_Product',
         ],
       },
 
+      # Special Linux-only targets to enable SIMDBC cross compilation for
+      # non-Android ARM devices.
+      'DebugXARMSIMDBC': {
+        'inherit_from': [
+          'Dart_Base', 'Dart_simdbc_Base', 'Dart_Debug',
+          'Dart_Linux_Base',
+          'Dart_Linux_xarm_Base',
+          'Dart_Linux_Debug',
+        ],
+        'defines': [
+          'DEBUG',
+        ],
+      },
+
+      'ReleaseXARMSIMDBC': {
+        'inherit_from': [
+          'Dart_Base', 'Dart_simdbc_Base', 'Dart_Release',
+          'Dart_Linux_Base',
+          'Dart_Linux_xarm_Base',
+          'Dart_Linux_Release',
+        ],
+      },
+
+      'ProductXARMSIMDBC': {
+        'inherit_from': [
+          'Dart_Base', 'Dart_simdbc_Base', 'Dart_Product',
+          'Dart_Linux_Base',
+          'Dart_Linux_xarm_Base',
+          'Dart_Linux_Product',
+        ],
+      },
+
       # ARM and MIPS hardware configurations are only for Linux and Android.
       'DebugXARM': {
         'inherit_from': [
           'Dart_Base', 'Dart_arm_Base', 'Dart_Debug',
           'Dart_Linux_Base',
           'Dart_Linux_xarm_Base',
           'Dart_Linux_Debug',
         ],
       },
 
@@ skipping 437 matching lines @@
           },
 
           'ReleaseX64_x64': {
             'inherit_from': [ 'ReleaseX64' ]
           },
         }],
       ],
     },
   },
 }