问题描述
我一直在尝试使用 C++11.我正在开发一个 android 项目,我想使用 std::mutex.与 OpenCV 一起但无论我做什么,我似乎都无法修复 Type 'mutex' could not be resolved
错误.
I have been trying to use C++11. I am developing an android project and i want to use std::mutex. Along with OpenCV
But no matter what I do, I just cant seem to fix the Type 'mutex' could not be resolved
error.
我尝试按照我在 SO 和其他地方找到的教程进行操作.LINK1 LINK2 LINK3LINK4
I have tried following the tutorials i found on SO and other places. LINK1 LINK2 LINK3LINK4
- ADT v22.3.0-887826
- 已安装的 C/C++ 编译器 (CDT)
看了这么多教程,现在变得一团糟.所以我将解释我当前的设置
Following so many tutorials, it has become a real mess now. So I will explain my current settings
- 项目 > 属性 > C/C++ 构建 > 工具链编辑器
- 当前的工具链是跨 GCC"
- 当前的 Builder 是Android Builder"
项目 > 属性 > C/C++ 构建 > 发现选项
Project > Properties > C/C++ Build > Discovery Options
- 编译器调用命令是gcc"
- 编译器调用参数是 -E -P -v -dD "${plugin_state_location}/specs.c -std=c++11"
项目 > C/C++ 常规 > 路径和符号 > # 符号选项卡
Project > C/C++ General > Paths and Symbols > # Symbols tab
- 符号 = __cplusplus 和值 = 1
在我的 Application.mk 文件中,我有以下内容
In my Application.mk file I have the following
APP_STL := gnustl_static APP_USE_CPP0X := true APP_CPPFLAGS := -std=c++11 -frtti -fexceptions APP_ABI := armeabi-v7a APP_PLATFORM := android-8
我尝试将 cplusplus 符号的值更改为 201103L并用空值尝试了 __GXX_EXPERIMENTAL_CXX0X
但似乎没有任何效果,我做错了什么??
But nothing seems to work, What am I doing wrong??
感谢任何帮助!
推荐答案
对
std::thread
的支持有点特殊.例如,在 这篇文章中解决了这个问题由冰龙.文章确实很短,但一句话就能概括:Support for
std::thread
is a bit special. The issue is addressed, for example, in this article by Binglong. The article is really short, but it can be summarized in one sentence:如果您想
#include <thread>
或#include <mutex>
,则不能使用(默认)gcc 4.6 工具链.You cannot use the (default) gcc 4.6 toolchain if you want to
#include <thread>
or#include <mutex>
.所以,请将
NDK_TOOLCHAIN_VERSION=4.8
或NDK_TOOLCHAIN_VERSION=clang
添加到您的Application.mk
.So, please add
NDK_TOOLCHAIN_VERSION=4.8
orNDK_TOOLCHAIN_VERSION=clang
to yourApplication.mk
.要让 ADT 正确重建其 Index,请参阅 Android NDK 构建,方法无法解析 或 Eclipse 编译成功但仍然给出语义错误.
For ADT to rebuild its Index correctly, see Android NDK build, Method could not be resolved or Eclipse compiles successfully but still gives semantic errors.
这篇关于使用 ADT/Eclipse 为 NDK 设置 C++11 (std::thread)的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持跟版网!
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