Plugin packaging gives compilation errors for unknown reasons.

Development Programming & Scripting C++
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1

I’m trying to package a plugin made in C++ but it is failing for some strange reasons…

The log says:

UATHelper: Package Plugin Task (Windows): C:\Users\theun\Desktop\PollutionPlugin\HostProject\Plugins\PollutionPlugin\Source\PollutionPlugin\Private\PollutionManager.cpp(84): error C3861: 'AsyncTask': identifier not found
UATHelper: Package Plugin Task (Windows): C:\Users\theun\Desktop\PollutionPlugin\HostProject\Plugins\PollutionPlugin\Source\PollutionPlugin\Private\PollutionManager.cpp(64): error C3861: 'AsyncTask': identifier not found
UATHelper: Package Plugin Task (Windows): C:\Users\theun\Desktop\PollutionPlugin\HostProject\Plugins\PollutionPlugin\Source\PollutionPlugin\Private\PollutionManager.cpp(226): error C2027: use of undefined type 'UTexture2D'
UATHelper: Package Plugin Task (Windows): C:\Users\theun\Desktop\PollutionPlugin\HostProject\Plugins\PollutionPlugin\Intermediate\Build\Win64\UnrealGame\Inc\PollutionPlugin\UHT\PollutionManager.generated.h(12): note: see declaration of 'UTexture2D'
UATHelper: Package Plugin Task (Windows): C:\Users\theun\Desktop\PollutionPlugin\HostProject\Plugins\PollutionPlugin\Source\PollutionPlugin\Private\PollutionManager.cpp(226): error C3861: 'CreateTransient': identifier not found
UATHelper: Package Plugin Task (Windows): C:\Users\theun\Desktop\PollutionPlugin\HostProject\Plugins\PollutionPlugin\Source\PollutionPlugin\Private\PollutionManager.cpp(231): error C2027: use of undefined type 'UTexture2D'
UATHelper: Package Plugin Task (Windows): C:\Users\theun\Desktop\PollutionPlugin\HostProject\Plugins\PollutionPlugin\Intermediate\Build\Win64\UnrealGame\Inc\PollutionPlugin\UHT\PollutionManager.generated.h(12): note: see declaration of 'UTexture2D'
UATHelper: Package Plugin Task (Windows): C:\Users\theun\Desktop\PollutionPlugin\HostProject\Plugins\PollutionPlugin\Source\PollutionPlugin\Private\PollutionManager.cpp(232): error C2027: use of undefined type 'UTexture2D'
UATHelper: Package Plugin Task (Windows): C:\Users\theun\Desktop\PollutionPlugin\HostProject\Plugins\PollutionPlugin\Intermediate\Build\Win64\UnrealGame\Inc\PollutionPlugin\UHT\PollutionManager.generated.h(12): note: see declaration of 'UTexture2D'
UATHelper: Package Plugin Task (Windows): C:\Users\theun\Desktop\PollutionPlugin\HostProject\Plugins\PollutionPlugin\Source\PollutionPlugin\Private\PollutionManager.cpp(233): error C2027: use of undefined type 'UTexture2D'
UATHelper: Package Plugin Task (Windows): C:\Users\theun\Desktop\PollutionPlugin\HostProject\Plugins\PollutionPlugin\Intermediate\Build\Win64\UnrealGame\Inc\PollutionPlugin\UHT\PollutionManager.generated.h(12): note: see declaration of 'UTexture2D'
UATHelper: Package Plugin Task (Windows): C:\Users\theun\Desktop\PollutionPlugin\HostProject\Plugins\PollutionPlugin\Source\PollutionPlugin\Private\PollutionManager.cpp(233): error C2653: 'TextureGroup': is not a class or namespace name
UATHelper: Package Plugin Task (Windows): C:\Users\theun\Desktop\PollutionPlugin\HostProject\Plugins\PollutionPlugin\Source\PollutionPlugin\Private\PollutionManager.cpp(233): error C2065: 'TEXTUREGROUP_Pixels2D': undeclared identifier
UATHelper: Package Plugin Task (Windows): C:\Users\theun\Desktop\PollutionPlugin\HostProject\Plugins\PollutionPlugin\Source\PollutionPlugin\Private\PollutionManager.cpp(234): error C2065: 'FTexture2DMipMap': undeclared identifier
UATHelper: Package Plugin Task (Windows): C:\Users\theun\Desktop\PollutionPlugin\HostProject\Plugins\PollutionPlugin\Source\PollutionPlugin\Private\PollutionManager.cpp(234): error C2065: 'Mip': undeclared identifier
UATHelper: Package Plugin Task (Windows): C:\Users\theun\Desktop\PollutionPlugin\HostProject\Plugins\PollutionPlugin\Source\PollutionPlugin\Private\PollutionManager.cpp(234): error C2027: use of undefined type 'UTexture2D'
UATHelper: Package Plugin Task (Windows): C:\Users\theun\Desktop\PollutionPlugin\HostProject\Plugins\PollutionPlugin\Intermediate\Build\Win64\UnrealGame\Inc\PollutionPlugin\UHT\PollutionManager.generated.h(12): note: see declaration of 'UTexture2D'
UATHelper: Package Plugin Task (Windows): C:\Users\theun\Desktop\PollutionPlugin\HostProject\Plugins\PollutionPlugin\Source\PollutionPlugin\Private\PollutionManager.cpp(235): error C2065: 'Mip': undeclared identifier
UATHelper: Package Plugin Task (Windows): C:\Users\theun\Desktop\PollutionPlugin\HostProject\Plugins\PollutionPlugin\Source\PollutionPlugin\Private\PollutionManager.cpp(235): error C2065: 'LOCK_READ_WRITE': undeclared identifier
UATHelper: Package Plugin Task (Windows): C:\Users\theun\Desktop\PollutionPlugin\HostProject\Plugins\PollutionPlugin\Source\PollutionPlugin\Private\PollutionManager.cpp(237): error C2065: 'Mip': undeclared identifier
UATHelper: Package Plugin Task (Windows): C:\Users\theun\Desktop\PollutionPlugin\HostProject\Plugins\PollutionPlugin\Source\PollutionPlugin\Private\PollutionManager.cpp(238): error C2027: use of undefined type 'UTexture2D'
UATHelper: Package Plugin Task (Windows): C:\Users\theun\Desktop\PollutionPlugin\HostProject\Plugins\PollutionPlugin\Intermediate\Build\Win64\UnrealGame\Inc\PollutionPlugin\UHT\PollutionManager.generated.h(12): note: see declaration of 'UTexture2D'
UATHelper: Package Plugin Task (Windows): C:\Users\theun\Desktop\PollutionPlugin\HostProject\Plugins\PollutionPlugin\Source\PollutionPlugin\Private\PollutionManager.cpp(245): error C2065: 'FTexture2DMipMap': undeclared identifier
UATHelper: Package Plugin Task (Windows): C:\Users\theun\Desktop\PollutionPlugin\HostProject\Plugins\PollutionPlugin\Source\PollutionPlugin\Private\PollutionManager.cpp(245): error C2065: 'Mip': undeclared identifier
UATHelper: Package Plugin Task (Windows): C:\Users\theun\Desktop\PollutionPlugin\HostProject\Plugins\PollutionPlugin\Source\PollutionPlugin\Private\PollutionManager.cpp(245): error C2027: use of undefined type 'UTexture2D'
UATHelper: Package Plugin Task (Windows): C:\Users\theun\Desktop\PollutionPlugin\HostProject\Plugins\PollutionPlugin\Intermediate\Build\Win64\UnrealGame\Inc\PollutionPlugin\UHT\PollutionManager.generated.h(12): note: see declaration of 'UTexture2D'
UATHelper: Package Plugin Task (Windows): C:\Users\theun\Desktop\PollutionPlugin\HostProject\Plugins\PollutionPlugin\Source\PollutionPlugin\Private\PollutionManager.cpp(246): error C2065: 'Mip': undeclared identifier
UATHelper: Package Plugin Task (Windows): C:\Users\theun\Desktop\PollutionPlugin\HostProject\Plugins\PollutionPlugin\Source\PollutionPlugin\Private\PollutionManager.cpp(246): error C2065: 'LOCK_READ_WRITE': undeclared identifier
UATHelper: Package Plugin Task (Windows): C:\Users\theun\Desktop\PollutionPlugin\HostProject\Plugins\PollutionPlugin\Source\PollutionPlugin\Private\PollutionManager.cpp(248): error C2065: 'Mip': undeclared identifier
UATHelper: Package Plugin Task (Windows): C:\Users\theun\Desktop\PollutionPlugin\HostProject\Plugins\PollutionPlugin\Source\PollutionPlugin\Private\PollutionManager.cpp(249): error C2027: use of undefined type 'UTexture2D'
UATHelper: Package Plugin Task (Windows): C:\Users\theun\Desktop\PollutionPlugin\HostProject\Plugins\PollutionPlugin\Intermediate\Build\Win64\UnrealGame\Inc\PollutionPlugin\UHT\PollutionManager.generated.h(12): note: see declaration of 'UTexture2D'

The reason why this is strange, is because when I build the project from visual studio, it will not fail.

The correct files are included as such:

#pragma once

#include "CoreMinimal.h"
#include "GameFramework/Actor.h"
#include "Runtime/Core/Public/Async/ParallelFor.h"
#include "Components/BoxComponent.h"
#include "Kismet/BlueprintAsyncActionBase.h"
#include "Kismet/GameplayStatics.h"

#include "PollutionManager.generated.h"

I really don’t know how to solve it. It all seems correct to me, so I don’t know what I’m doing wrong…

2

Hi The_untextured,

Building with UAT is more stringent that with VS - you’ll need to add the includes for UTexture and AsyncTask in PollutionManager.cpp

#include "Engine/Texture.h"
#include "Async/Async.h"
1 Like
3

Oh, thanks!

Generally, how do I know what additional includes I need for a project? I just checked the documentation for UTexture2D and it definitely does not tell me to include “Engine/Texture.h”

Also, it failed again with the same error…

The new include section of the header file:

#pragma once

#include "CoreMinimal.h"
#include "GameFramework/Actor.h"
#include "Runtime/Core/Public/Async/ParallelFor.h"
#include "Components/BoxComponent.h"
#include "Kismet/BlueprintAsyncActionBase.h"
#include "Kismet/GameplayStatics.h"
#include "Engine/Texture.h"
#include "Async/Async.h"

#include "PollutionManager.generated.h"
4

Ok solved. It was “Engine/Texture2D.h” rather than just “Engine/Texture.h”.

Thanks a lot!

1 Like
5

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