[UE] Bug: 在PublicIncludePaths中引入Programs/UnrealHeaderTool/Public，编译时会产生大量警告

[watsonsong]

前置阅读 | Pre-reading

• 文档/Doc
• Issues
• FAQ

Puer的版本 | Puer Version

1.0.5

UE的版本 | UE Version

5.4.1

发生在哪个平台 | Platform

Editor(win)

错误信息 | Error Message

18:09:31 /data00/unreal-engine/Engine/Source/Developer/CrashDebugHelper/CrashDebugHelper.Build.cs: warning: Referenced directory '/data00/jenkins/workspace/MyProj/linux_ds/Plugins/Puerts/Source/CSharpParamDefaultValueMetas/Developer/CrashDebugHelper/Private' does not exist.
18:09:31 /data00/unreal-engine/Engine/Source/Developer/CrashDebugHelper/CrashDebugHelper.Build.cs: warning: Referenced directory '/data00/jenkins/workspace/MyProj/linux_ds/Plugins/Puerts/Source/CSharpParamDefaultValueMetas/Developer/CrashDebugHelper/Private/Linux' does not exist.
18:09:31 /data00/unreal-engine/Engine/Source/Developer/CrashDebugHelper/CrashDebugHelper.Build.cs: warning: Referenced directory '/data00/jenkins/workspace/MyProj/linux_ds/Plugins/Puerts/Source/CSharpParamDefaultValueMetas/Developer/CrashDebugHelper/Private/Mac' does not exist.
18:09:31 /data00/unreal-engine/Engine/Source/Developer/CrashDebugHelper/CrashDebugHelper.Build.cs: warning: Referenced directory '/data00/jenkins/workspace/MyProj/linux_ds/Plugins/Puerts/Source/CSharpParamDefaultValueMetas/Developer/CrashDebugHelper/Private/Windows' does not exist.
18:09:31 /data00/unreal-engine/Engine/Source/Developer/CrashDebugHelper/CrashDebugHelper.Build.cs: warning: Referenced directory '/data00/jenkins/workspace/MyProj/linux_ds/Plugins/Puerts/Source/CSharpParamDefaultValueMetas/Developer/CrashDebugHelper/Private/IOS' does not exist.
18:09:31 /data00/unreal-engine/Engine/Plugins/AI/HTNPlanner/Source/HTNPlanner/HTNPlanner.Build.cs: warning: Referenced directory '/data00/jenkins/workspace/MyProj/linux_ds/Plugins/Puerts/Source/Plugins/AI/HTNPlanner/Source' does not exist.
18:09:31 /data00/unreal-engine/Engine/Plugins/AI/HTNPlanner/Source/HTNTestSuite/HTNTestSuite.Build.cs: warning: Referenced directory

18:09:33 /data00/jenkins/workspace/MyProj/linux_ds/Plugins/Puerts/Source/ParamDefaultValueMetas/ParamDefaultValueMetas.Build.cs: warning: Referenced directory '/data00/unreal-engine/Engine/Source/Programs/UnrealHeaderTool/Public' does not exist.
18:09:34 /data00/jenkins/workspace/MyProj/linux_ds/Plugins/Puerts/Source/DeclarationGenerator/DeclarationGenerator.Build.cs: warning: Referenced directory '/data00/unreal-engine/Engine/Source/Programs/UnrealHeaderTool/Public' does not exist.
18:09:34 /data00/jenkins/workspace/MyProj/linux_ds/Plugins/Puerts/Source/ParamDefaultValueMetas/ParamDefaultValueMetas.Build.cs: warning: Referenced directory '/data00/unreal-engine/Engine/Source/Programs/UnrealHeaderTool/Public' does not exist.

问题重现 | Bug reproduce

例如在构建Server版本的时候，会出现大量报错。
似乎Programs/UnrealHeaderTool/Public不应该加入到PublicIncludePaths中，将Programs/UnrealHeaderTool/Public公开到外部模模块。

[chexiongsheng]

你说的这里？ https://github.com/Tencent/puerts/blob/master/unreal/Puerts/Source/ParamDefaultValueMetas/ParamDefaultValueMetas.Build.cs#L23

写在这里，应该就是Public，这是让JsEnv能include到生成的头文件。

看你的报错找不到文件，我感觉和这里没关，添加多一个头文件搜索路径可能会导致找错文件而不是找不到文件。
其次新版本UE也不会用这个模块，如果确实怀疑这里，你在UE5.3+可以把这些干掉。

[watsonsong]

应该是从UE5.3开始，已经没有Programs/UnrealHeaderTool/Public这个目录存在了。

是否从5.3开始，ParamDefaultValueMetas可以去掉。但是DeclarationGenerator应该不能去掉把，它的PublicIncludePaths也加入了Programs/UnrealHeaderTool/Public这个路径。

[chexiongsheng]

DeclarationGenerator应该各版本都可以去掉Programs/UnrealHeaderTool/Public。
但这应该不是导致你问题的原因。这只是添加头文件搜索路径，多加一个不存在的路径没什么问题。5.3、5.4项目都有用puerts，别人能编译通过。

[chexiongsheng]

c++编译错误应该首先看第一个，从头开始解决，后续错误可能只是前面的错误导致的。