C++ 铿锵++；3.1但Lion Xcode 4.3.3上没有“cxx_lambdas”

这与clang 3.1有关，但我在这里找不到答案，我在这里说得更具体一些：

cxx\u lambdas

在我的确切设置中支持clang 3.1

我在OSX Lion 10.7.4上安装了Xcode 4.3.3和最新的命令行工具包（2012年6月11日）。我现在有了clang++3.1版：

基于，我期望功能

cxx\u lambdas

可用，但这不是我得到的：

llins@jupara:~/projects/tests/C++11$ make
clang++ -std=c++11 -stdlib=libc++ test_clang_features.cpp -o test_clang_features

llins@jupara:~/projects/tests/C++11$ ./test_clang_features 
FAILED feature tests: 
__has_feature(cxx_constexpr) .................................. FAILED
__has_feature(cxx_generalized_initializers) ................... FAILED
__has_feature(cxx_inheriting_constructors) .................... FAILED
__has_feature(cxx_lambdas) .................................... FAILED
__has_feature(cxx_local_type_template_args) ................... FAILED
__has_feature(cxx_unrestricted_unions) ........................ FAILED
__has_feature(cxx_user_literals) .............................. FAILED

以下是我运行以获取此报告的代码：

#包括
使用名称空间std；
void main（）
{
Xcode 4.4+将提供对Lambada的支持

正如ildjarn指出的那样，Apple的clang/llvm发行版是定制的…
Apple clang 3.1版与
clang 3.1版不一样。感谢Apple让版本控制变得如此简单。
llins@jupara:~/projects/tests/C++11$ make
clang++ -std=c++11 -stdlib=libc++ test_clang_features.cpp -o test_clang_features

llins@jupara:~/projects/tests/C++11$ ./test_clang_features 
FAILED feature tests: 
__has_feature(cxx_constexpr) .................................. FAILED
__has_feature(cxx_generalized_initializers) ................... FAILED
__has_feature(cxx_inheriting_constructors) .................... FAILED
__has_feature(cxx_lambdas) .................................... FAILED
__has_feature(cxx_local_type_template_args) ................... FAILED
__has_feature(cxx_unrestricted_unions) ........................ FAILED
__has_feature(cxx_user_literals) .............................. FAILED

cxx_access_control_sfinae cxx_alias_templates cxx_alignas
cxx_attributes cxx_auto_type cxx_constexpr cxx_decltype
cxx_default_function_template_args cxx_defaulted_functions
cxx_delegating_constructors cxx_deleted_functions cxx_exceptions
cxx_explicit_conversions cxx_generalized_initializers
cxx_implicit_moves cxx_inheriting_constructors cxx_inline_namespaces
cxx_lambdas cxx_local_type_template_args cxx_noexcept
cxx_nonstatic_member_init cxx_nullptr cxx_override_control
cxx_range_for cxx_raw_string_literals
cxx_reference_qualified_functions cxx_rtti cxx_rvalue_references
cxx_static_assert cxx_strong_enums cxx_trailing_return
cxx_unicode_literals cxx_unrestricted_unions cxx_user_literals
cxx_variadic_templates