Don't depend on libdart_io in run_vm_tests and gen_snapshot.

runtime/bin/bin.gypi

Index: runtime/bin/bin.gypi
diff --git a/runtime/bin/bin.gypi b/runtime/bin/bin.gypi
index 2a0b6be65a4e08cb58b9d8051a0588ee8e390557..19b89f55fb6dc2d0238d4af605f19af30010c323 100644
--- a/runtime/bin/bin.gypi
+++ b/runtime/bin/bin.gypi
@@ -168,9 +168,29 @@
       ],
     },
     {
+      'target_name': 'libdart_builtin_no_io',

[Ivan Posva, 2014/02/25 07:53:12]

I am a bit puzzled by this new target as it does not appear to be used anywhere.

[Anders Johnsen, 2014/02/25 08:31:32]

Yeah, you are 100% right. This was a solution to a problem, that didn't exist :)
Removed.

+      'type': 'static_library',
+      'toolsets':['target','host'],
+      'include_dirs': [
+        '..',
+      ],
+      'sources': [
+        'builtin_no_io.cc',
+      ],
+      'conditions': [
+        ['OS=="linux"', {
+          'link_settings': {
+            'libraries': [
+              '-ldl',
+            ],
+          },
+        }],
+      ],
+    },
+    {
       'target_name': 'libdart_io',
       'type': 'static_library',
-      'toolsets':['target', 'host'],
+      'toolsets':['target'],
       'include_dirs': [
         '..',
       ],
@@ -256,7 +276,6 @@
       'dependencies': [
         'libdart_withcore',
         'libdart_builtin',
-        'libdart_io',
       ],
       'include_dirs': [
         '..',
@@ -548,7 +567,6 @@
       'dependencies': [
         'libdart_withcore',
         'libdart_builtin',
-        'libdart_io',
         'generate_snapshot_file#host',
         'generate_snapshot_test_dat_file#host',
       ],