Use "platform.architecture()" to find the proper architecture.

In Snow Leopard "platform.machine()" returns "i386" while
"platform.architecture()" returns ('64bit',''). Using information from both
we can determine the proper architecture

This reverts commit ea29e137b5 re-enabling the
64bit build on Macintosh.

deps/udns/configure

@@ -142,12 +142,6 @@ else
 EOF
 fi
 
-# HACK FIXME - use 32bit on Mac
-os=`uname -s`;
-if [ $os = "Darwin"  ]; then
-  CFLAGS="$CFLAGS -m32"
-fi
-
 ac_config_h
 ac_output Makefile
 ac_msg "creating config.status"

wscript

@@ -99,24 +99,12 @@ def configure(conf):
   debug_env.set_variant('debug')
   debug_env.append_value('CCFLAGS', ['-DDEBUG', '-g', '-O0', '-Wall', '-Wextra'])
   debug_env.append_value('CXXFLAGS', ['-DDEBUG', '-g', '-O0', '-Wall', '-Wextra'])
-
-  # HACK FIXME - use 32bit on Mac
-  if platform.system() == "Darwin":
-    debug_env.append_value('CCFLAGS', '-m32')
-    debug_env.append_value('CXXFLAGS', '-m32')
-
   conf.write_config_header("config.h")
 
   # Configure default variant
   conf.setenv('default')
   conf.env.append_value('CCFLAGS', ['-DNDEBUG', '-O3'])
   conf.env.append_value('CXXFLAGS', ['-DNDEBUG', '-O3'])
-
-  # HACK FIXME - use 32bit on Mac
-  if platform.system() == "Darwin":
-    conf.env.append_value('CCFLAGS', '-m32')
-    conf.env.append_value('CXXFLAGS', '-m32')
-
   conf.write_config_header("config.h")
 
 def build_udns(bld):
@@ -154,9 +142,10 @@ def build_udns(bld):
 # XXX Remove this when v8 defaults x86_64 to native builds
 def GuessArchitecture():
   id = platform.machine()
+  arch = platform.architecture()[0]
   if id.startswith('arm'):
     return 'arm'
-  elif '64' in id:
+  elif ('64' in id) or ('64' in arch):
     return 'x64'
   elif (not id) or (not re.match('(x|i[3-6])86', id) is None):
     return 'ia32'
@@ -178,9 +167,6 @@ def build_v8(bld):
   if GuessArchitecture() == "x64":
     arch = "arch=x64"
 
-  # HACK FIXME - use 32bit on Mac
-  if platform.system() == "Darwin": arch = "arch=ia32";
-
   v8 = bld.new_task_gen(
     target = join("deps/v8", bld.env["staticlib_PATTERN"] % "v8"),
     rule=v8rule % (v8dir_tgt, scons, "release", arch),
@@ -192,10 +178,6 @@ def build_v8(bld):
   bld.env_of_name('default')["LIBPATH_V8"] = v8dir_tgt
   bld.env_of_name('default')["LINKFLAGS_V8"] = ["-pthread"]
 
-  # HACK FIXME - use 32bit on Mac
-  if platform.system() == "Darwin":
-    bld.env_of_name('default')["LINKFLAGS_V8"] = ["-pthread", "-m32"]
-
   ### v8 debug
   if bld.env["USE_DEBUG"]:
     deps_tgt = join(bld.srcnode.abspath(bld.env_of_name("debug")),"deps")
@@ -205,11 +187,6 @@ def build_v8(bld):
     bld.env_of_name('debug')["STATICLIB_V8"] = "v8_g"
     bld.env_of_name('debug')["LIBPATH_V8"] = v8dir_tgt
     bld.env_of_name('debug')["LINKFLAGS_V8"] = ["-pthread"]
-
-    # HACK FIXME - use 32bit on Mac
-    if platform.system() == "Darwin":
-      bld.env_of_name('debug')["LINKFLAGS_V8"] = ["-pthread", "-m32"]
-
     v8_debug.rule = v8rule % (v8dir_tgt, scons, "debug", arch)
     v8_debug.target = join("deps/v8", bld.env["staticlib_PATTERN"] % "v8_g")