VM: Add dart_precompiled build target, a standalone VM without the JIT compiler.

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': {
     'gen_source_dir': '<(SHARED_INTERMEDIATE_DIR)',
 
     'io_cc_file': '<(gen_source_dir)/io_gen.cc',
     'io_patch_cc_file': '<(gen_source_dir)/io_patch_gen.cc',
@@ skipping 608 matching lines @@
         'Dart_Linux_Base': {
           # Have the linker add all symbols to the dynamic symbol table
           # so that extensions can look them up dynamically in the binary.
           'ldflags': [
             '-rdynamic',
           ],
         },
       },
     },
     {
+      # dart binary for running precompiled snapshots without the compiler.
+      'target_name': 'dart_precompiled',
+      'type': 'executable',
+      'dependencies': [
+        'libdart_precompiled',
+        'libdart_builtin',
+        'libdart_io',
+        'build_observatory#host',
+        'generate_snapshot_file#host',

[rmacnak, 2015/11/17 20:51:18]

Stub out this not-precompiled snapshot too.

[Florian Schneider, 2015/11/18 11:44:08]

Done.

+        'generate_resources_cc_file#host',
+        'generate_observatory_assets_cc_file#host',
+      ],
+      'include_dirs': [
+        '..',
+      ],
+      'sources': [
+        'main.cc',
+        'builtin_common.cc',
+        'builtin_natives.cc',
+        'builtin_nolib.cc',
+        'builtin.h',
+        'io_natives.h',
+        'vmservice_impl.cc',
+        'vmservice_impl.h',
+        '<(snapshot_cc_file)',

[rmacnak, 2015/11/17 20:51:18]

Stub out this not-precompiled snapshot too.

[Florian Schneider, 2015/11/18 11:44:08]

Done. Replaced with snapshot_empty.cc. This cuts off another ~1M from the
binary.

+        '<(resources_cc_file)',
+        '<(observatory_assets_cc_file)',
+      ],
+      'conditions': [
+        ['OS=="win"', {
+          'link_settings': {
+            'libraries': [ '-lws2_32.lib', '-lRpcrt4.lib', '-lwinmm.lib' ],
+          },
+          # Generate an import library on Windows, by exporting a function.
+          # Extensions use this import library to link to the API in dart.exe.
+          'msvs_settings': {
+            'VCLinkerTool': {
+              'AdditionalOptions': [ '/EXPORT:Dart_True' ],
+            },
+          },
+        }],
+      ],
+    },
+    {
       # dart binary built for the host. It does not use a snapshot
       # and does not include Observatory.
       'target_name': 'dart_bootstrap',
       'type': 'executable',
       'toolsets':['host'],
       'dependencies': [
         'libdart_nosnapshot',
         'libdart_builtin',
         'libdart_io',
         'generate_bootstrap_resources_cc_file#host',
@@ skipping 205 matching lines @@
         }],
         ['OS=="linux"', {
           'cflags': [
             '-fPIC',
           ],
         }],
       ],
     },
   ],
 }