获取错误：命名空间“std”中的“shared_ptr”未命名类型

Question

I am trying to compile an android application in android studio (ndk r10d) which uses some C++ code. I needed C++11 so I added -std=gnu++11 (I need gnu++11 instead of c++11 for an extension I am using). I am using the stlport stl, due to other libraries I am using that use this stl library. So my cFlags and stl parameters in the build.gradle file looks like this:

stl "stlport_static"
cFlags " mylib1.a mylib2.a ... -fexceptions -frtti -std=gnu++11"

I also have included memory: #include <memory>

When trying to compile I receive this error:

'shared_ptr' in namespace 'std' does not name a type

I have been using the boost implementation for the smart pointers till now but with the move to c++11 I would rather use the standard implementation.

Answer 1

http://en.cppreference.com/w/cpp/memory/shared_ptr/make_shared在您的代码中使用头文件。

#include <memory>

Answer 2

@TC Looks like you were right. I saw your claim on a different question while looking for a solution for my problem, but as libraries that I am using are compiling with C++11 and STLport I thought that this claim might not be true.

What I think happened is that the libraries I'm using are not using any C++11 features that the STLport is missing. They are only using C++11 features that the gcc compiler supports. I need the gnuStl to support the features that I am using.

My solution was to use the boost implementation for the smart pointers and all other missing C++11 features.

Answer 3

I got here googling for a similar error, but the answer did not work:

error: ‘shared_pointer’ in namespace ‘std’ does not name a template type

In my case, it was a typo:

std::shared_pointer

should be

std::shared_ptr