Enable GDBJIT interface for standalone by default.

R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/18638002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15467 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Makefile

@@ -80,10 +80,13 @@ endif
 ifeq ($(extrachecks), off)
   GYPFLAGS += -Dv8_enable_extra_checks=0
 endif
-# gdbjit=on
+# gdbjit=on/off
 ifeq ($(gdbjit), on)
   GYPFLAGS += -Dv8_enable_gdbjit=1
 endif
+ifeq ($(gdbjit), off)
+  GYPFLAGS += -Dv8_enable_gdbjit=0
+endif
 # vtunejit=on
 ifeq ($(vtunejit), on)
   GYPFLAGS += -Dv8_enable_vtunejit=1

build/standalone.gypi

@@ -87,6 +87,12 @@
       }, {
         'os_posix%': 1,
       }],
+      ['(v8_target_arch=="ia32" or v8_target_arch=="x64") and \
+        (OS=="linux" or OS=="mac")', {
+        'v8_enable_gdbjit%': 1,
+      }, {
+        'v8_enable_gdbjit%': 0,
+      }],
     ],
     # Default ARM variable settings.
     'armv7%': 'default',