Added 64-bit Windows build through SCons

SConstruct

 # Copyright 2008 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 #       copyright notice, this list of conditions and the following
 #       disclaimer in the documentation and/or other materials provided
@@ skipping 163 matching lines @@
       'CPPDEFINES':   ['V8_TARGET_ARCH_X64'],
       'CCFLAGS':      ['-m64'],
       'LINKFLAGS':    ['-m64'],
     },
     'prof:oprofile': {
       'CPPDEFINES':   ['ENABLE_OPROFILE_AGENT']
     }
   },
   'msvc': {
     'all': {
-      'DIALECTFLAGS': ['/nologo'],
       'CCFLAGS':      ['$DIALECTFLAGS', '$WARNINGFLAGS'],
       'CXXFLAGS':     ['$CCFLAGS', '/GR-', '/Gy'],
-      'CPPDEFINES':   ['WIN32', '_USE_32BIT_TIME_T'],
-      'LINKFLAGS':    ['/NOLOGO', '/MACHINE:X86', '/INCREMENTAL:NO',
-          '/NXCOMPAT', '/IGNORE:4221'],
-      'ARFLAGS':      ['/NOLOGO'],
+      'CPPDEFINES':   ['WIN32'],
+      'LINKFLAGS':    ['/INCREMENTAL:NO', '/NXCOMPAT', '/IGNORE:4221'],
       'CCPDBFLAGS':   ['/Zi']
     },
+    'verbose:off': {
+      'DIALECTFLAGS': ['/nologo'],
+      'ARFLAGS':      ['/NOLOGO']
+    },
     'arch:ia32': {
-      'CPPDEFINES':   ['V8_TARGET_ARCH_IA32']
+      'CPPDEFINES':   ['V8_TARGET_ARCH_IA32', '_USE_32BIT_TIME_T'],
+      'LINKFLAGS':    ['/MACHINE:X86'],
+      'ARFLAGS':      ['/MACHINE:X86']
+    },
+    'arch:x64': {
+      'CPPDEFINES':   ['V8_TARGET_ARCH_X64'],
+      'LINKFLAGS':    ['/MACHINE:X64'],
+      'ARFLAGS':      ['/MACHINE:X64']
     },
     'mode:debug': {
       'CCFLAGS':      ['/Od', '/Gm'],
       'CPPDEFINES':   ['_DEBUG', 'ENABLE_DISASSEMBLER', 'DEBUG'],
       'LINKFLAGS':    ['/DEBUG'],
       'msvcrt:static': {
         'CCFLAGS': ['/MTd']
       },
       'msvcrt:shared': {
         'CCFLAGS': ['/MDd']
@@ skipping 41 matching lines @@
     },
     'os:macos': {
       'WARNINGFLAGS': ['-pedantic']
     },
     'disassembler:on': {
       'CPPDEFINES':   ['ENABLE_DISASSEMBLER']
     }
   },
   'msvc': {
     'all': {
-      'WARNINGFLAGS': ['/W3', '/WX', '/wd4355', '/wd4800']
+      'WARNINGFLAGS': ['/WX', '/wd4355', '/wd4800']
     },
-    'library:shared': {
-      'CPPDEFINES':   ['BUILDING_V8_SHARED'],
-      'LIBS': ['winmm', 'ws2_32']
+    'arch:ia32': {
+      'WARNINGFLAGS': ['/W3']
+    },
+    'arch:x64': {
+      'WARNINGFLAGS': ['/W2']
     },
     'arch:arm': {
       'CPPDEFINES':   ['V8_TARGET_ARCH_ARM'],
       # /wd4996 is to silence the warning about sscanf
       # used by the arm simulator.
       'WARNINGFLAGS': ['/wd4996']
     },
     'disassembler:on': {
       'CPPDEFINES':   ['ENABLE_DISASSEMBLER']
     }
@@ skipping 77 matching lines @@
   'msvc': {
     'all': {
       'CPPDEFINES': ['_HAS_EXCEPTIONS=0'],
       'LIBS': ['winmm', 'ws2_32']
     },
     'library:shared': {
       'CPPDEFINES': ['USING_V8_SHARED']
     },
     'arch:ia32': {
       'CPPDEFINES': ['V8_TARGET_ARCH_IA32']
-    }
+    },
+    'arch:x64': {
+      'CPPDEFINES':   ['V8_TARGET_ARCH_X64']
+    },
   }
 }
 
 
 SAMPLE_FLAGS = {
   'all': {
     'CPPPATH': [join(abspath('.'), 'include')],
     'LIBS': ['$LIBRARY'],
   },
   'gcc': {
@@ skipping 44 matching lines @@
     'mode:debug': {
       'CCFLAGS':      ['-g', '-O0']
     },
     'prof:oprofile': {
       'LIBPATH': ['/usr/lib32', '/usr/lib32/oprofile'],
       'LIBS': ['opagent']
     }
   },
   'msvc': {
     'all': {
+      'LIBS': ['winmm', 'ws2_32']
+    },
+    'verbose:off': {
       'CCFLAGS': ['/nologo'],
-      'LINKFLAGS': ['/nologo'],
-      'LIBS': ['winmm', 'ws2_32']
+      'LINKFLAGS': ['/NOLOGO']
+    },
+    'verbose:on': {
+      'LINKFLAGS': ['/VERBOSE']
     },
     'library:shared': {
       'CPPDEFINES': ['USING_V8_SHARED']
     },
     'prof:on': {
       'LINKFLAGS': ['/MAP']
     },
     'mode:release': {
       'CCFLAGS':   ['/O2'],
       'LINKFLAGS': ['/OPT:REF', '/OPT:ICF'],
       'msvcrt:static': {
         'CCFLAGS': ['/MT']
       },
       'msvcrt:shared': {
         'CCFLAGS': ['/MD']
       },
       'msvcltcg:on': {
         'CCFLAGS':      ['/GL'],
         'LINKFLAGS':    ['/LTCG'],
       }
     },
     'arch:ia32': {
-      'CPPDEFINES':     ['V8_TARGET_ARCH_IA32']
+      'CPPDEFINES': ['V8_TARGET_ARCH_IA32'],
+      'LINKFLAGS': ['/MACHINE:X86']
+    },
+    'arch:x64': {
+      'CPPDEFINES': ['V8_TARGET_ARCH_X64'],
+      'LINKFLAGS': ['/MACHINE:X64']
     },
     'mode:debug': {
       'CCFLAGS':   ['/Od'],
       'LINKFLAGS': ['/DEBUG'],
       'msvcrt:static': {
         'CCFLAGS': ['/MTd']
       },
       'msvcrt:shared': {
         'CCFLAGS': ['/MDd']
       }
@@ skipping 122 matching lines @@
   },
   'sourcesignatures': {
     'values': ['MD5', 'timestamp'],
     'default': 'MD5',
     'help': 'set how the build system detects file changes'
   },
   'console': {
     'values': ['dumb', 'readline'],
     'default': 'dumb',
     'help': 'the console to use for the d8 shell'
+  },
+  'verbose': {
+    'values': ['on', 'off'],
+    'default': 'off',
+    'help': 'more output from compiler and linker'
   }
 }
 
 
 def GetOptions():
   result = Options()
   result.Add('mode', 'compilation mode (debug, release)', 'release')
   result.Add('sample', 'build sample (shell, process)', '')
   result.Add('env', 'override environment settings (NAME0:value0,NAME1:value1,...)', '')
   result.Add('importenv', 'import environment settings (NAME0,NAME1,...)', '')
@@ skipping 327 matching lines @@
 # version of scons.  Also, there's a bug in some revisions that
 # doesn't allow this flag to be set, so we swallow any exceptions.
 # Lovely.
 try:
   SetOption('warn', 'no-deprecated')
 except:
   pass
 
 
 Build()