Merge bleeding edge up to 8774 into the GC branch.

SConstruct

Index: SConstruct
===================================================================
--- SConstruct	(revision 8778)
+++ SConstruct	(working copy)
@@ -60,26 +60,17 @@
     'mode:debug': {
       'CPPDEFINES': ['V8_ENABLE_CHECKS', 'OBJECT_PRINT']
     },
-    'vmstate:on': {
-      'CPPDEFINES':   ['ENABLE_VMSTATE_TRACKING'],
-    },
     'objectprint:on': {
       'CPPDEFINES':   ['OBJECT_PRINT'],
     },
-    'protectheap:on': {
-      'CPPDEFINES':   ['ENABLE_VMSTATE_TRACKING', 'ENABLE_HEAP_PROTECTION'],
-    },
-    'profilingsupport:on': {
-      'CPPDEFINES':   ['ENABLE_VMSTATE_TRACKING', 'ENABLE_LOGGING_AND_PROFILING'],
-    },
     'debuggersupport:on': {
       'CPPDEFINES':   ['ENABLE_DEBUGGER_SUPPORT'],
     },
     'inspector:on': {
       'CPPDEFINES':   ['INSPECTOR'],
     },
-    'fasttls:on': {
-      'CPPDEFINES':   ['V8_FAST_TLS'],
+    'fasttls:off': {
+      'CPPDEFINES':   ['V8_NO_FAST_TLS'],
     },
     'liveobjectlist:on': {
       'CPPDEFINES':   ['ENABLE_DEBUGGER_SUPPORT', 'INSPECTOR',
@@ -413,6 +404,7 @@
     },
     'os:linux': {
       'LIBS':         ['pthread'],
+      'CCFLAGS':      ['-Wno-unused-but-set-variable'],
     },
     'os:macos': {
       'LIBS':         ['pthread'],
@@ -782,6 +774,13 @@
 
 
 D8_FLAGS = {
+  'all': {
+    'library:shared': {
+      'CPPDEFINES': ['V8_SHARED'],
+      'LIBS': ['v8'],
+      'LIBPATH': ['.']
+    },
+  },
   'gcc': {
     'all': {
       'CCFLAGS': ['$DIALECTFLAGS', '$WARNINGFLAGS'],
@@ -929,21 +928,11 @@
     'default': 'static',
     'help': 'the type of library to produce'
   },
-  'vmstate': {
-    'values': ['on', 'off'],
-    'default': 'off',
-    'help': 'enable VM state tracking'
-  },
   'objectprint': {
     'values': ['on', 'off'],
     'default': 'off',
     'help': 'enable object printing'
   },
-  'protectheap': {
-    'values': ['on', 'off'],
-    'default': 'off',
-    'help': 'enable heap protection'
-  },
   'profilingsupport': {
     'values': ['on', 'off'],
     'default': 'on',
@@ -1389,7 +1378,11 @@
   d8_env = Environment(tools=tools)
   d8_env.Replace(**context.flags['d8'])
   context.ApplyEnvOverrides(d8_env)
-  shell = d8_env.Program('d8' + suffix, object_files + shell_files)
+  if context.options['library'] == 'static':
+    shell = d8_env.Program('d8' + suffix, object_files + shell_files)
+  else:
+    shell = d8_env.Program('d8' + suffix, shell_files)
+    d8_env.Depends(shell, library)
   context.d8_targets.append(shell)
 
   for sample in context.samples: