MSVC++ 编译 module std

环境：windows 10 19045.xxxx

只安装了MSVC C++ 工具链和一个版本的SDK，SDK版本建议选一个和本机系统匹配的。

cd %USERPROFILE%\source\repos\STLModules

mkdir x86

mkdir x64

打开“x86 Native Tools Command Prompt for VS 2022”控制台，执行如下：

cd %USERPROFILE%\source\repos\STLModules\x86 

cl /std:c++latest /EHsc /nologo /W4 /MTd /c "%VCToolsInstallDir%\modules\std.ixx"

再打开“x64 Native Tools Command Prompt for VS 2022”控制台，执行如下：

cd %USERPROFILE%\source\repos\STLModules\x64 

cl /std:c++latest /EHsc /nologo /W4 /MTd /c "%VCToolsInstallDir%\modules\std.ixx"

此时在 x86, x64 目录下都生成两个文件：

这两个就是对应架构的std module文件

• std.ifc is the compiled binary representation of the named module interface that the compiler consults to process the import std; statement. This is a compile-time only artifact. It doesn't ship with your application.
• std.obj contains the implementation of the named module. Add std.obj to the command line when you compile the sample app to statically link the functionality you use from the standard library into your application.

使用方法：

//example01.cpp

import std;
int main()
{
    std::cout << "Import the STL library for best performance\n";
    std::vector v{5, 5, 5};
    for (const auto& e : v)
        {
            std::cout << e;
        }
}

以编译x86 exe为例，将%USERPROFILE%\source\repos\STLModules\x86 下的std.ifc和std.obj拷贝到源文件目录。

打开“x86 Native Tools Command Prompt for VS 2022”控制台，进入所在目录，执行：

cl /std:c++latest /EHsc /nologo /W4 /MTd example01.cpp std.obj

成功编译出example01.exe。

参考：Tutorial: Import the standard library (STL) using modules from the command line (C++) | Microsoft Learn