启用c ++ 17 intellisense打开文件夹visual studio ninja-clang

Question

使用“-Xclang -std=c++17”我可以构建可执行文件，但是我无法找到激活c ++ 17 intellisense的内容。我尝试了很多组合，如下所示，但似乎没有任何组合

的CMakeLists.txt

cmake_minimum_required(VERSION 3.9.2)
set(CMAKE_CXX_STANDARD 17)
project(myapp)
add_compile_options("-Xclang" "-std=c++17")
add_executable(myapp main.cpp)
set_target_properties(myapp PROPERTIES CXX_STANDARD 17)
target_compile_features(myapp PRIVATE cxx_std_17)

main.cpp中

#include <tuple>
namespace test1::test2 // red [qualified name is not allowed]
//       ^^^^^^^^^^^^^
{}

int main()
{
    auto[a, b] = std::pair<int, int>();
    //  ^^^^^^
    return 0;
}

CMakeSettings.json

{
  // See https://go.microsoft.com//fwlink//?linkid=834763 for more information about this file.
  "configurations": [
    {
      "name": "x64-Debug",
      "generator": "Ninja",
      "configurationType": "Debug",
      "inheritEnvironments": [ "msvc_x64_x64" ],
      "buildRoot": "${env.USERPROFILE}\\CMakeBuilds\\${workspaceHash}\\build\\${name}",
      "installRoot": "${env.USERPROFILE}\\CMakeBuilds\\${workspaceHash}\\install\\${name}",
      "cmakeCommandArgs": "",
      "buildCommandArgs": "-v",
      "ctestCommandArgs": "",
      "variables": [
        {
          "name": "CMAKE_CXX_COMPILER",
          "value": "clang-cl"
        },
        {
          "name": "CMAKE_C_COMPILER",
          "value": "clang-cl"
        },
        {
          "name": "CMAKE_SYSTEM_NAME",
          "value": "Windows"
        }
      ]
    }
  ]
}

Answer 1

至于2017年12月，定义IntelliSense模式的唯一方法是通过根文件夹中的CppProperties.json文件，您无法与CMakeSettings.json结合使用。

请参阅Visual C++ Team Blog: Customizing your Environment with Visual C++ and Open Folder下的评论：

• justanotherdev：“......是否有可能从通过CMake创建的项目中继承CppProperties包含？如果是这样，从Windows CMake项目获取Linux intellisense将是轻而易举的并且将解决Linux的一个主要问题（需要指定所有包括手动项目。“ Will Buik [MSFT]：“今天不支持。......”

---

我已经尝试过，并且没有运气使用与"Open Folder projects in Visual C++" documentation推荐的相似的东西。

1. 我确实去了Project / Edit Settings / CppProperties.json
2. 并插入测试我的配置之类的东西

   ...
       "compilerSwitches": "/std:c++17",
       "intelliSenseMode": "windows-msvc-x86"
   ...

   或任何其他支持的模式：

---

参考

• Developer Community: CMake C++ Project: Intellisense fails to parse included header directories
• Developer Community: Intellisense shows false errors with C++17 and CMake
• GitHub Microsoft/VSLinux Issue #131: openfolder project ignores intelliSenseMode
• Visual C++ Team Blog: Use any C++ Compiler with Visual Studio

Answer 2

要为C ++启用正确的Intellisense 17，请在项目定义之前在CMakeLists.txt中指定set(CMAKE_CXX_STANDARD 17);不需要其他配置。 CMake将在构建时为clang-cl提供-std=c++17。

cmake_minimum_required (VERSION 3.9.2)

set(CMAKE_CXX_STANDARD 17)

project ("test")
add_executable (Test "test.cpp" "test.h")

在Visual Studio 2017 15.9.8中验证