如何在CLion中通过Ninja让CMake自动适配x64架构

问题根源 #

Ninja生成器依赖环境变量确定编译架构，不支持直接传递platform参数。你之前的CMakePresets.json中设置architecture和toolset的strategy为external，导致CMake尝试将x64平台参数传给Ninja，触发报错。同时CLion默认加载x86环境，需自动调用vcvarsall.bat x64配置x64编译环境。

解决方案 #

1. 修改CMakePresets.json配置 #

移除导致报错的architecture和toolset字段，通过command字段自动检测Visual Studio路径并调用vcvarsall.bat x64，确保配置前加载x64环境。修改后的完整配置如下：

{
    "version": 3,
    "configurePresets": [
        {
            "name": "windows-base",
            "description": "Target Windows with the Visual Studio development environment.",
            "hidden": true,
            "generator": "Ninja",
            "binaryDir": "${sourceDir}/Build/${presetName}",
            "installDir": "${sourceDir}/Install/${presetName}",
            "command": [
                "cmd.exe",
                "/C",
                "for /f \"tokens=*\" %%i in ('\"C:/Program Files (x86)/Microsoft Visual Studio/Installer/vswhere.exe\" -latest -products * -requires Microsoft.VisualStudio.Component.VC.Tools.x86.x64 -property installationPath') do call \"%%i/VC/Auxiliary/Build/vcvarsall.bat\" x64 && cmake"
            ],
            "cacheVariables": {
                "CMAKE_C_COMPILER": "cl.exe",
                "CMAKE_CXX_COMPILER": "cl.exe"
            },
            "condition": {
                "type": "equals",
                "lhs": "${hostSystemName}",
                "rhs": "Windows"
            }
        },
        {
            "name": "x64-debug",
            "displayName": "Debug",
            "description": "Target Windows (64-bit) with the Visual Studio development environment. (Debug)",
            "inherits": "windows-base",
            "cacheVariables": { "CMAKE_BUILD_TYPE": "Debug" }
        },
        {
            "name": "x64-release",
            "displayName": "Release",
            "description": "Target Windows (64-bit) with the Visual Studio development environment. (Release)",
            "inherits": "windows-base",
            "cacheVariables": { "CMAKE_BUILD_TYPE": "Release" }
        },
        {
            "name": "x64-release_with_debug_information",
            "displayName": "Release with Debug Information",
            "description": "Target Windows (64-bit) with the Visual Studio development environment. (RelWithDebInfo)",
            "inherits": "windows-base",
            "cacheVariables": { "CMAKE_BUILD_TYPE": "RelWithDebInfo" }
        }
    ],
    "buildPresets": [
        {
            "name": "Debug Preset",
            "configurePreset": "x64-debug"
        },
        {
            "name": "Release Preset",
            "configurePreset": "x64-release"
        },
        {
            "name": "Release with Debug Information Preset",
            "configurePreset": "x64-release_with_debug_information"
        }
    ]
}

配置细节说明

• command字段：通过vswhere.exe自动查找最新Visual Studio安装路径，调用vcvarsall.bat x64配置x64环境后再执行CMake，避免硬编码VS路径，适配不同VS版本。
• 移除architecture/toolset：Ninja无需直接平台参数，依赖环境变量确定架构，解决报错问题。
• condition字段：限制该预设仅在Windows系统生效。

2. 在CLion中应用预设 #

1. 打开File > Settings > Build, Execution, Deployment > CMake。
2. 在Configure preset下拉菜单中选择目标x64预设（如x64-debug），清空CMake options中的无关内容。
3. 点击Apply，重新加载CMake项目。

3. 验证x64环境生效 #

可通过以下方式验证：

• 查看CMake缓存中的CMAKE_SIZEOF_VOID_P值，若为8则表示x64环境生效。
• 添加测试代码编译运行：

#include <iostream>

int main() {
    std::cout << "Pointer size: " << sizeof(void*) << " bytes" << std::endl;
    return 0;
}

输出8 bytes即为x64环境配置成功。

内容的提问来源于stack exchange，提问作者Nima Ghorab