使用 ADT/Eclipse 为 NDK 设置 C++11 (std::thread)

2022-01-10 00:00:00 android-ndk android eclipse c++11 java-native-interface

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

  1. ADT v22.3.0-887826
  2. 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 or NDK_TOOLCHAIN_VERSION=clang to your Application.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.

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