Add dart_product binary

runtime/bin/bin.gypi

Index: runtime/bin/bin.gypi
diff --git a/runtime/bin/bin.gypi b/runtime/bin/bin.gypi
index 4b46c99d3de27ae01403bfa47000725b36191b0f..35c5bcb6971a7e83a6bdc5da024b7a8f7f0740e2 100644
--- a/runtime/bin/bin.gypi
+++ b/runtime/bin/bin.gypi
@@ -578,6 +578,57 @@
       ]
     },
     {
+      # dart_product binary.
+      'target_name': 'dart_product',
+      'type': 'executable',
+      'dependencies': [
+        'libdart',
+        'libdart_builtin',
+        'libdart_io',
+        'generate_snapshot_file#host',
+      ],
+      'include_dirs': [
+        '..',
+        '../../third_party/', # Zlib
+      ],
+      'defines': [
+        'DART_PRODUCT_BINARY',
+      ],
+      'sources': [
+        'main.cc',
+        'builtin_common.cc',
+        'builtin_natives.cc',
+        'builtin_nolib.cc',
+        'builtin.h',
+        'io_natives.h',
+        'snapshot_empty.cc',
+        'observatory_assets_empty.cc',
+      ],
+      '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' ],
+            },
+          },
+        }],
+      ],
+      'configurations': {
+        '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',
+          ],

[siva, 2016/02/12 18:18:01]

Not sure if there will be a size difference but do we need -rdynamic ?

[Cutch, 2016/02/12 18:33:43]

I've removed it and it still appears to work.

+        },
+      },
+    },
+    {
       # dart binary with a snapshot of corelibs built in.
       'target_name': 'dart',
       'type': 'executable',