Support VTune's JIT interface.

runtime/vm/vm.gypi

Index: runtime/vm/vm.gypi
diff --git a/runtime/vm/vm.gypi b/runtime/vm/vm.gypi
index 0fb1bd9ad32cdf40db16bcd33b382b99bf6c2854..4cf3ebf7c041e6f5483f020845b4b02c44cedbda 100644
--- a/runtime/vm/vm.gypi
+++ b/runtime/vm/vm.gypi
@@ -57,7 +57,19 @@
           'sources/' : [
             ['exclude', 'gdbjit.cc'],
           ],
-       }]],
+       }],
+       ['OS=="linux" and dart_vtune_support == 1', {

[Ivan Posva, 2012/11/26 04:36:38]

I would prefer if we could find a way to deal with vtune without having to rerun
runhooks. If that is not possible fine, but we should explore the options.

[Vyacheslav Egorov (Google), 2012/11/26 15:11:10]

Header file and library are required to enable support so unfortunately I don't
see how we can avoid reconfiguring compilation.

I am open to suggestions.

+          # Link in libjitprofiling.a.
+          'cflags': [
+            '-DDART_VTUNE_SUPPORT',
+            '-I<(dart_vtune_root)/include',
+          ],
+          'link_settings': {
+            'libraries': [
+              '-ljitprofiling',
+            ],
+          },
+        }]],
     },
     {
       'target_name': 'libdart_lib_withcore',