Change dart_no_snapshot to run native extensions.

runtime/bin/bin.gypi

Index: runtime/bin/bin.gypi
diff --git a/runtime/bin/bin.gypi b/runtime/bin/bin.gypi
index 07321dc8934ad07a561c71b0873edbd53745369c..41d0078ce90b40bd3d5c330e2136a7ba6ad76955 100644
--- a/runtime/bin/bin.gypi
+++ b/runtime/bin/bin.gypi
@@ -322,6 +322,9 @@
         '../vm/debugger_api_impl.cc',
         '<(version_cc_file)',
       ],
+      'defines': [
+        'DART_SHARED_LIB',

[Mads Ager (google), 2012/11/07 10:16:27]

This looks wrong.

'type': 'static_library'

'defines': [ 'DART_SHARED_LIB', ]

???

[Bill Hesse, 2012/11/07 11:23:26]

The only effect of DART_SHARED_LIB is to use _declspec(dllexport) (on Windows)
or visibility("default") (on gcc) to make the Dart API visible to libraries that
link with this.  Perhaps it should be renamed to DART_EXPORT_API.  Shall I do
that?


On 2012/11/07 10:16:27, Mads Ager wrote:

[Mads Ager (google), 2012/11/07 11:52:00]

OK. This looked weird because of that naming. Add a comment for now?

[Ivan Posva, 2012/11/08 20:32:12]

Siva and I discussed earlier today whether we should just change the default to
always export. And yes, we would change the name of the flag at that point as
well. Just having a comment for now is fine.

+      ],
     },
     {
       # Completely statically linked binary for generating snapshots.
@@ -472,6 +475,13 @@
           'link_settings': {
             'libraries': [ '-lws2_32.lib', '-lRpcrt4.lib' ],
           },
+          # Generate an import library on Windows, by exporting a function.
+          # Extensions use this import library to link to the API in dart.exe.

[Ivan Posva, 2012/11/08 20:32:12]

This is actually dart_no_snapshot.exe. Can you also add a clarification comment
that states whether all Dart_* are exported or is it only Dart_True? If only
Dart_True, why is that enough?

+          'msvs_settings': {
+            'VCLinkerTool': {
+              'AdditionalOptions': [ '/EXPORT:Dart_True' ],
+            },
+          },
        }]],
     },
     {