Visual Studio 2019:使用vcvars64.bat从命令行构建C ++不再起作用 [英] Visual Studio 2019: build C++ from command line with vcvars64.bat doesn't work anymore

问题描述

为了在Visual Studio早期版本的命令行中使用cl cpp编译器编译应用程序，我运行vcvars64.bat脚本，然后编译器按预期工作.

In order to compile an app with cl cpp compiler in the command line on previous versions of Visual studio I ran the vcvars64.bat script and then compiler worked as expected.

我最近安装了Visual Studio2019.在以下位置找到了vcvar64.bat脚本:C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\VC\Auxiliary\Build.

I have recently installed Visual Studio 2019. I have found vcvar64.bat script at the following location: C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\VC\Auxiliary\Build.

但是运行此脚本不能使cl编译器正常工作.即使是简单的3行cpp文件也无法编译，并出现诸如"stddef.h"文件之类的愚蠢错误.如果从IDE使用编译器，则编译器将按预期工作.

But running this script doesn't make cl compiler work. Even simple 3 line cpp files fail compilation with silly errors like "stddef.h" file not found. Compiler works as expected if you are using it from IDE.

要使VS2019 cpp编译器在命令行中工作，您需要做什么?

What do you need to do to make VS2019 cpp compiler work in command line?

推荐答案

在我的Visual Studio 2019安装中，在C:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\ucrt中找到了stddef.h. vcvars.bat应该将此路径添加到INCLUDE环境变量.

In my visual studio 2019 installation stddef.h is found in C:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\ucrt. vcvars.bat should be adding this path to the INCLUDE environment variable.

运行以下内容可能会提供一些提示:

Running the following might provide some hints:

set VSCMD_DEBUG=3
vcvars64.bat > out.txt

在我的安装中，在out.txt中搜索call :GetWin10SdkDir到bat文件在其中搜索SDK目录的部分.希望那里会有一些错误消息.

In my installation searching out.txt for call :GetWin10SdkDir comes to the section where the bat file is searching for a SDK directory. Hopefully there will be some error messages in there somewhere.

作为参考，这些是通过在我的计算机上对vcvars64.bat进行工作调用而设置的其他环境变量:

For reference these are the additional environment variables set by a working call to vcvars64.bat on my machine:

CommandPromptType=Native
DevEnvDir=C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\Common7\IDE\
ExtensionSdkDir=C:\Program Files (x86)\Microsoft SDKs\Windows Kits\10\ExtensionSDKs
Framework40Version=v4.0
FrameworkDir=C:\WINDOWS\Microsoft.NET\Framework64\
FrameworkDIR64=C:\WINDOWS\Microsoft.NET\Framework64
FrameworkVersion=v4.0.30319
FrameworkVersion64=v4.0.30319
HTMLHelpDir=C:\Program Files (x86)\HTML Help Workshop
INCLUDE=C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\VC\Tools\MSVC\14.24.28314\ATLMFC\include;C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\VC\Tools\MSVC\14.24.28314\include;C:\Program Files (x86)\Windows Kits\NETFXSDK\4.8\include\um;C:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\ucrt;C:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\shared;C:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\um;C:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\winrt;C:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\cppwinrt
LIB=C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\VC\Tools\MSVC\14.24.28314\ATLMFC\lib\x64;C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\VC\Tools\MSVC\14.24.28314\lib\x64;C:\Program Files (x86)\Windows Kits\NETFXSDK\4.8\lib\um\x64;C:\Program Files (x86)\Windows Kits\10\lib\10.0.17763.0\ucrt\x64;C:\Program Files (x86)\Windows Kits\10\lib\10.0.17763.0\um\x64;
LIBPATH=C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\VC\Tools\MSVC\14.24.28314\ATLMFC\lib\x64;C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\VC\Tools\MSVC\14.24.28314\lib\x64;C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\VC\Tools\MSVC\14.24.28314\lib\x86\store\references;C:\Program Files (x86)\Windows Kits\10\UnionMetadata\10.0.17763.0;C:\Program Files (x86)\Windows Kits\10\References\10.0.17763.0;C:\WINDOWS\Microsoft.NET\Framework64\v4.0.30319;
NETFXSDKDir=C:\Program Files (x86)\Windows Kits\NETFXSDK\4.8\
Path=C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\VC\Tools\MSVC\14.24.28314\bin\HostX64\x64;C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\Common7\IDE\VC\VCPackages;C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\Common7\IDE\CommonExtensions\Microsoft\TestWindow;C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\Common7\IDE\CommonExtensions\Microsoft\TeamFoundation\Team Explorer;C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\MSBuild\Current\bin\Roslyn;C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\Team Tools\Performance Tools\x64;C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\Team Tools\Performance Tools;C:\Program Files (x86)\Microsoft Visual Studio\VS15Preview\Common\VSPerfCollectionTools\vs2019\\x64;C:\Program Files (x86)\Microsoft Visual Studio\VS15Preview\Common\VSPerfCollectionTools\vs2019\;C:\Program Files (x86)\Microsoft SDKs\Windows\v10.0A\bin\NETFX 4.8 Tools\x64\;C:\Program Files (x86)\HTML Help Workshop;C:\Program Files (x86)\Windows Kits\10\bin\10.0.17763.0\x64;C:\Program Files (x86)\Windows Kits\10\bin\x64;C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\\MSBuild\Current\Bin;C:\WINDOWS\Microsoft.NET\Framework64\v4.0.30319;C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\Common7\IDE\;C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\Common7\Tools\;
Platform=x64
UCRTVersion=10.0.17763.0
UniversalCRTSdkDir=C:\Program Files (x86)\Windows Kits\10\
VCIDEInstallDir=C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\Common7\IDE\VC\
VCINSTALLDIR=C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\VC\
VCToolsInstallDir=C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\VC\Tools\MSVC\14.24.28314\
VCToolsRedistDir=C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\VC\Redist\MSVC\14.24.28127\
VCToolsVersion=14.24.28314
VisualStudioVersion=16.0
VS160COMNTOOLS=C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\Common7\Tools\
VSCMD_ARG_app_plat=Desktop
VSCMD_ARG_HOST_ARCH=x64
VSCMD_ARG_TGT_ARCH=x64
VSCMD_VER=16.4.2
VSINSTALLDIR=C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\
WindowsLibPath=C:\Program Files (x86)\Windows Kits\10\UnionMetadata\10.0.17763.0;C:\Program Files (x86)\Windows Kits\10\References\10.0.17763.0
WindowsSdkBinPath=C:\Program Files (x86)\Windows Kits\10\bin\
WindowsSdkDir=C:\Program Files (x86)\Windows Kits\10\
WindowsSDKLibVersion=10.0.17763.0\
WindowsSdkVerBinPath=C:\Program Files (x86)\Windows Kits\10\bin\10.0.17763.0\
WindowsSDKVersion=10.0.17763.0\
WindowsSDK_ExecutablePath_x64=C:\Program Files (x86)\Microsoft SDKs\Windows\v10.0A\bin\NETFX 4.8 Tools\x64\
WindowsSDK_ExecutablePath_x86=C:\Program Files (x86)\Microsoft SDKs\Windows\v10.0A\bin\NETFX 4.8 Tools\
__DOTNET_ADD_64BIT=1
__DOTNET_PREFERRED_BITNESS=64

如果其他所有方法均失败，则重新安装Visual Studio可能会解决该问题.

If all else fails a re-install of visual studio is likely to fix the issue.

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