如何获得CMake工具以使用C ++ 11(或更高版本)功能在Visual Studio Code中编译程序? [英] How do I get CMake Tools to compile programs in Visual Studio Code with C++11 (or higher) features?

问题描述

我一般来说都是CMake的新手，所以希望我做错了一些简单的事情，但是我想尽办法找到解决办法.我什至无法使用CMake工具来编译具有c ++ 11(或更高功能)的普通程序.理想情况下，我想启用c ++ 17.

I'm new to CMake in general so hopefully there is something simple I'm doing wrong but I'm pulling my hair out trying to find the solution. I can't get CMake tools to compile even a trivial program with c++11 (or higher features). Ideally I'd like to enable c++17.

例如，如果我的整个main()函数是

For example, if my entire main() function is

int main(int, char**) 
{
    auto number{9};

    return 0;
}

尝试构建时出现以下2条错误和1条警告:

I get the following 2 errors and 1 warning when attempting a build:

error: declaration of variable 'number' with deduced type 'auto' requires an initializer

error: expected ';' at end of declaration

warning: 'auto' type specifier is a C++11 extension [-Wc++11-extensions]

我的VSCode C ++设置设置为C ++ 17标准，并且编写代码时，我尝试 build 使用CMake工具扩展程序.

My VSCode C++ settings are set to the C++17 standard, and I don't get any Intellisense errors or warnings when writing the code, just when I try to build using the CMake Tools extension.

我还尝试将以下内容添加到我的CMakeLists.txt文件中:

I've also tried adding the following to my CMakeLists.txt file:

set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)

我想念什么?非常感谢！

What am I missing? Thanks very much!

平台和版本

操作系统:macOS High Sierra 10.13.6

Operating System: macOS High Sierra 10.13.6

CMake版本:3.16.2

CMake Version: 3.16.2

VSCode版本:1.41.1

VSCode Version: 1.41.1

CMake工具扩展版本:1.2.3

CMake Tools Extension Version: 1.2.3

编译器/工具链:Clang 10.0.0

Compiler/Toolchain: Clang 10.0.0

推荐答案

弄清楚了，我怀疑这是一个简单的错误和修复.

Figured it out, and as I suspected it turned out to be a simple mistake and fix.

最初，我的CMakeLists.txt文件如下所示:

Originally, my CMakeLists.txt file looked like this:

cmake_minimum_required(VERSION 3.0.0)
project(JRPG VERSION 0.1.0)

include(CTest)
enable_testing()

add_executable(JRPG main.cpp)

set(CPACK_PROJECT_NAME ${PROJECT_NAME})
set(CPACK_PROJECT_VERSION ${PROJECT_VERSION})
include(CPack)

set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)

当我将底部的三行向上移动到项目名称和版本行(见下文)正下方时( )，构建工作按预期进行.我尚不清楚确切的原因，但我相信我会更深入地研究文档，以便尽快找出解决方案.谢谢！

When I moved those bottom three lines up directly underneath the project name and version line (see below), the build worked as expected. I don't yet know exactly why that worked but I'm sure I'll figure it out soon enough as I dive deeper into the documentation. Thanks!

cmake_minimum_required(VERSION 3.0.0)
project(JRPG VERSION 0.1.0)

set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)

include(CTest)
enable_testing()

add_executable(JRPG main.cpp)

set(CPACK_PROJECT_NAME ${PROJECT_NAME})
set(CPACK_PROJECT_VERSION ${PROJECT_VERSION})
include(CPack)

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