BuildTips

• https://cloud.tencent.com/developer/article/1368057
• https://www.blurredcode.com/2025/06/3902fd43/
• https://blog.csdn.net/haisong1991/article/details/79832678
• https://zhuanlan.zhihu.com/p/445901502
• https://zhuanlan.zhihu.com/p/445907941
• https://zhuanlan.zhihu.com/p/670789235
• https://dev.epicgames.com/documentation/zh-cn/unreal-engine/using-multi-process-cooking-for-unreal-engine

增量MPCook

BuildUAT

UE 打包时使用的是BuildUAT.bat这个批处理来启动的。具体的代码可以参看Engine\Engine\Source\Programs\AutomationTool这里的。

如果想要在打包完后做一些处理可以在Engine\Engine\Source\Programs\AutomationTool\Scripts\ArchiveCommand.Automation.cs这个文件中出一些处理。

估计还可以不用修改引擎代码来实现，比如说修改批处理的执行、监听某些事件来处理。应该是重写Engine\Engine\Source\Programs\AutomationTool\AutomationUtils\Platform.cs这个类来实现。

VS2026

If you use Visual Studio 2026 (v18.x), Unreal Engine 5.3 may fail with newer MSVC (14.50+).
Use this stable setup:

1. Keep VS2026 installed.
2. Install MSVC v14.38 toolset into VS2026 (14.38.33130).
3. Set UBT compiler config to VisualStudio2022 enum and force 14.38.33130.

C:\Users\ban-m\AppData\Roaming\Unreal Engine\UnrealBuildTool\BuildConfiguration.xml

<?xml version="1.0" encoding="utf-8" ?>
<Configuration xmlns="https://www.unrealengine.com/BuildConfiguration">
  <WindowsPlatform>
    <Compiler>VisualStudio2022</Compiler>
    <CompilerVersion>14.38.33130</CompilerVersion>
  </WindowsPlatform>
</Configuration>

Build command:

& 'C:\UE_5.3\Engine\Build\BatchFiles\Build.bat' LyraEditor Win64 Development 'G:\Unreal\LyraStarterGame\LyraStarterGame.uproject' -WaitMutex -NoHotReloadFromIDE

Notes:

• VisualStudio2026 is not a valid UE5.3 compiler enum in BuildConfiguration.xml.
• The log may still print Using Visual Studio 2022 ...; this is expected for UE5.3 enum naming.
• With this config, UBT uses MSVC 14.38 from your VS2026 installation path.