在浏览了不同的网站和 Q/A 之后,我一直在尝试让 C++11 工作,但我仍然遇到问题。我想在 libstdc++ 中使用 clang。在 clang 状态中表明它受补丁支持 - http://clang.llvm.org/libstdc++4.7-clang11.patch。我从 macports 下载 gcc4.7 并在 gcc4.7 的标头中进行了相应的更改
我不使用 libc++ 的原因是因为 libc++ 和 libstdc++ 之间的 ABI 兼容性,由该线程指示:Why can't clang with libc++ in c++0x mode link this boost::program_options example?
好的,一切都完成后,我用以下代码测试了我的设置:
#include <mutex>
#include <thread>
int main ( ) {
std::mutex myMutext;
return 0;
}
我期望包含应该在 c++11 下工作。
所以这是我编译它的方法:with GCC
g++ -std=c++11 -I/opt/local/include/gcc47/c++ -L/opt/local/lib/gcc47 main.cpp -o main
编译成功
与铿锵
clang++ -std=c++11 -I/opt/local/include/gcc47/c++ -L/opt/local/lib/gcc47 main.cpp -o main
我收到此错误:
@work:boostTest$ clang++ -std=c++11 -I/opt/local/include/gcc47/c++ -L/opt/local/lib/gcc47 main.cpp -o main
In file included from main.cpp:1:
In file included from /opt/local/include/gcc47/c++/mutex:38:
In file included from /opt/local/include/gcc47/c++/tuple:37:
In file included from /opt/local/include/gcc47/c++/utility:70:
/opt/local/include/gcc47/c++/bits/stl_relops.h:72:3: error: unknown type name '_GLIBCXX_BEGIN_NAMESPACE_VERSION'
_GLIBCXX_BEGIN_NAMESPACE_VERSION
^
/opt/local/include/gcc47/c++/bits/stl_relops.h:86:5: error: expected unqualified-id
template <class _Tp>
^
In file included from main.cpp:1:
In file included from /opt/local/include/gcc47/c++/mutex:38:
In file included from /opt/local/include/gcc47/c++/tuple:37:
In file included from /opt/local/include/gcc47/c++/utility:71:
In file included from /opt/local/include/gcc47/c++/bits/stl_pair.h:61:
/opt/local/include/gcc47/c++/bits/move.h:38:1: error: unknown type name '_GLIBCXX_BEGIN_NAMESPACE_VERSION'
_GLIBCXX_BEGIN_NAMESPACE_VERSION
^
/opt/local/include/gcc47/c++/bits/move.h:45:3: error: expected unqualified-id
template<typename _Tp>
^
In file included from main.cpp:1:
In file included from /opt/local/include/gcc47/c++/mutex:38:
In file included from /opt/local/include/gcc47/c++/tuple:37:
In file included from /opt/local/include/gcc47/c++/utility:71:
In file included from /opt/local/include/gcc47/c++/bits/stl_pair.h:61:
In file included from /opt/local/include/gcc47/c++/bits/move.h:57:
/opt/local/include/gcc47/c++/type_traits:41:1: error: unknown type name '_GLIBCXX_BEGIN_NAMESPACE_VERSION'
_GLIBCXX_BEGIN_NAMESPACE_VERSION
^
/opt/local/include/gcc47/c++/type_traits:55:3: error: expected unqualified-id
template<typename _Tp, _Tp __v>
^
/opt/local/include/gcc47/c++/type_traits:65:11: error: unknown type name 'integral_constant'
typedef integral_constant<bool, true> true_type;
^
/opt/local/include/gcc47/c++/type_traits:65:28: error: expected unqualified-id
typedef integral_constant<bool, true> true_type;
^
/opt/local/include/gcc47/c++/type_traits:68:11: error: unknown type name 'integral_constant'
typedef integral_constant<bool, false> false_type;
^
/opt/local/include/gcc47/c++/type_traits:68:28: error: expected unqualified-id
typedef integral_constant<bool, false> false_type;
^
/opt/local/include/gcc47/c++/type_traits:71:36: error: expected ';' after top level declarator
constexpr _Tp integral_constant<_Tp, __v>::value;
^
/opt/local/include/gcc47/c++/type_traits:83:14: error: expected class name
: public false_type
^
/opt/local/include/gcc47/c++/type_traits:106:14: error: expected class name
: public true_type
^
/opt/local/include/gcc47/c++/type_traits:126:14: error: unknown template name 'integral_constant'
: public integral_constant<bool, !_Pp::value>
^
/opt/local/include/gcc47/c++/type_traits:126:38: error: expected class name
: public integral_constant<bool, !_Pp::value>
^
/opt/local/include/gcc47/c++/type_traits:142:14: error: expected class name
: public false_type { };
^
/opt/local/include/gcc47/c++/type_traits:146:14: error: expected class name
: public true_type { };
^
/opt/local/include/gcc47/c++/type_traits:151:14: error: unknown template name 'integral_constant'
: public integral_constant<bool, (__is_void_helper<typename
^
/opt/local/include/gcc47/c++/type_traits:151:38: error: expected class name
: public integral_constant<bool, (__is_void_helper<typename
^
fatal error: too many errors emitted, stopping now [-ferror-limit=]
20 errors generated.
我正在使用 clang 版本:
Apple clang version 4.0 (tags/Apple/clang-418.2.41) (based on LLVM 3.1svn)
Target: x86_64-apple-darwin11.3.0
Thread model: posix
难道我做错了什么?或者这是最新的 gcc 4.7 libstc++ 的问题?