Factor out toolset definitions in a separate gypi file

build/features.gypi

+# Copyright 2013 the V8 project authors. All rights reserved.
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+#       notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+#       copyright notice, this list of conditions and the following
+#       disclaimer in the documentation and/or other materials provided
+#       with the distribution.
+#     * Neither the name of Google Inc. nor the names of its
+#       contributors may be used to endorse or promote products derived
+#       from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# Compile time controlled V8 features.
+
+{
+  'variables': {
+    'v8_compress_startup_data%': 'off',
+
+    'v8_enable_debugger_support%': 1,
+
+    'v8_enable_disassembler%': 0,
+
+    'v8_enable_gdbjit%': 0,
+
+    'v8_object_print%': 0,
+
+    'v8_enable_verify_heap%': 0,
+
+    'v8_use_snapshot%': 'true',
+
+    # With post mortem support enabled, metadata is embedded into libv8 that
+    # describes various parameters of the VM for use by debuggers. See
+    # tools/gen-postmortem-metadata.py for details.
+    'v8_postmortem_support%': 'false',
+
+    # Interpreted regexp engine exists as platform-independent alternative
+    # based where the regular expression is compiled to a bytecode.
+    'v8_interpreted_regexp%': 0,
+
+    # Enable ECMAScript Internationalization API. Enabling this feature will
+    # add a dependency on the ICU library.
+    'v8_enable_i18n_support%': 0,
+  },
+  'target_defaults': {
+    'conditions': [
+      ['v8_enable_debugger_support==1', {
+        'defines': ['ENABLE_DEBUGGER_SUPPORT',],
+      }],
+      ['v8_enable_disassembler==1', {
+        'defines': ['ENABLE_DISASSEMBLER',],
+      }],
+      ['v8_enable_gdbjit==1', {
+        'defines': ['ENABLE_GDB_JIT_INTERFACE',],
+      }],
+      ['v8_object_print==1', {
+        'defines': ['OBJECT_PRINT',],
+      }],
+      ['v8_enable_verify_heap==1', {
+        'defines': ['VERIFY_HEAP',],
+      }],
+      ['v8_interpreted_regexp==1', {
+        'defines': ['V8_INTERPRETED_REGEXP',],
+      }],
+      ['v8_enable_i18n_support==1', {
+        'defines': ['V8_I18N_SUPPORT',],
+      }],
+      ['v8_compress_startup_data=="bz2"', {
+        'defines': [
+          'COMPRESS_STARTUP_DATA_BZ2',
+        ],
+      }],
+    ],  # conditions
+    'configurations': {
+      'Debug': {
+        'variables': {
+          'v8_enable_extra_checks%': 1,
+        },
+        'conditions': [
+          ['v8_enable_extra_checks==1', {
+            'defines': ['ENABLE_EXTRA_CHECKS',],
+          }],
+        ],
+      },  # Debug
+      'Release': {
+        'variables': {
+          'v8_enable_extra_checks%': 0,
+        },
+        'conditions': [
+          ['v8_enable_extra_checks==1', {
+            'defines': ['ENABLE_EXTRA_CHECKS',],
+          }],
+        ],  # conditions
+      },  # Release
+    },  # configurations
+  },  # target_defaults
+}