Unreal Engine Issues and Bug Tracker (UE-67241)

Description

If disable PCH in Target.cs, an error will occur when building for Android. The log is as follows.

LogPlayLevel: Error: D:/Build/Release-4_21_0/Engine/Source/Runtime/VulkanRHI/Private/Android/../VulkanGenericPlatform.h(40,3): error: use of undeclared identifier 'GShaderPlatformForFeatureLevel'
LogPlayLevel: GShaderPlatformForFeatureLevel[ERHIFeatureLevel::ES2] = SP_VULKAN_PCES3_1;
LogPlayLevel: ^
LogPlayLevel: Error: D:/Build/Release-4_21_0/Engine/Source/Runtime/VulkanRHI/Private/Android/../VulkanGenericPlatform.h(40,34): error: use of undeclared identifier 'ERHIFeatureLevel'
LogPlayLevel: GShaderPlatformForFeatureLevel[ERHIFeatureLevel::ES2] = SP_VULKAN_PCES3_1;
LogPlayLevel: ^
LogPlayLevel: Error: D:/Build/Release-4_21_0/Engine/Source/Runtime/VulkanRHI/Private/Android/../VulkanGenericPlatform.h(40,59): error: use of undeclared identifier 'SP_VULKAN_PCES3_1'
LogPlayLevel: GShaderPlatformForFeatureLevel[ERHIFeatureLevel::ES2] = SP_VULKAN_PCES3_1;
LogPlayLevel: ^
LogPlayLevel: Error: D:/Build/Release-4_21_0/Engine/Source/Runtime/VulkanRHI/Private/Android/../VulkanGenericPlatform.h(41,3): error: use of undeclared identifier 'GShaderPlatformForFeatureLevel'
LogPlayLevel: GShaderPlatformForFeatureLevel[ERHIFeatureLevel::ES3_1] = SP_VULKAN_PCES3_1;
LogPlayLevel: ^
LogPlayLevel: Error: D:/Build/Release-4_21_0/Engine/Source/Runtime/VulkanRHI/Private/Android/../VulkanGenericPlatform.h(41,34): error: use of undeclared identifier 'ERHIFeatureLevel'
LogPlayLevel: GShaderPlatformForFeatureLevel[ERHIFeatureLevel::ES3_1] = SP_VULKAN_PCES3_1;
LogPlayLevel: ^
LogPlayLevel: Error: D:/Build/Release-4_21_0/Engine/Source/Runtime/VulkanRHI/Private/Android/../VulkanGenericPlatform.h(41,61): error: use of undeclared identifier 'SP_VULKAN_PCES3_1'
LogPlayLevel: GShaderPlatformForFeatureLevel[ERHIFeatureLevel::ES3_1] = SP_VULKAN_PCES3_1;
LogPlayLevel: ^
LogPlayLevel: Error: D:/Build/Release-4_21_0/Engine/Source/Runtime/VulkanRHI/Private/Android/../VulkanGenericPlatform.h(42,3): error: use of undeclared identifier 'GShaderPlatformForFeatureLevel'
LogPlayLevel: GShaderPlatformForFeatureLevel[ERHIFeatureLevel::SM4] = SP_VULKAN_SM4;
LogPlayLevel: ^
LogPlayLevel: Error: D:/Build/Release-4_21_0/Engine/Source/Runtime/VulkanRHI/Private/Android/../VulkanGenericPlatform.h(42,34): error: use of undeclared identifier 'ERHIFeatureLevel'
LogPlayLevel: GShaderPlatformForFeatureLevel[ERHIFeatureLevel::SM4] = SP_VULKAN_SM4;
LogPlayLevel: ^
LogPlayLevel: Error: D:/Build/Release-4_21_0/Engine/Source/Runtime/VulkanRHI/Private/Android/../VulkanGenericPlatform.h(42,59): error: use of undeclared identifier 'SP_VULKAN_SM4'
LogPlayLevel: GShaderPlatformForFeatureLevel[ERHIFeatureLevel::SM4] = SP_VULKAN_SM4;
LogPlayLevel: ^
LogPlayLevel: Error: D:/Build/Release-4_21_0/Engine/Source/Runtime/VulkanRHI/Private/Android/../VulkanGenericPlatform.h(43,3): error: use of undeclared identifier 'GShaderPlatformForFeatureLevel'
LogPlayLevel: GShaderPlatformForFeatureLevel[ERHIFeatureLevel::SM5] = SP_VULKAN_SM5;
LogPlayLevel: ^
LogPlayLevel: Error: D:/Build/Release-4_21_0/Engine/Source/Runtime/VulkanRHI/Private/Android/../VulkanGenericPlatform.h(43,34): error: use of undeclared identifier 'ERHIFeatureLevel'
LogPlayLevel: GShaderPlatformForFeatureLevel[ERHIFeatureLevel::SM5] = SP_VULKAN_SM5;
LogPlayLevel: ^
LogPlayLevel: Error: D:/Build/Release-4_21_0/Engine/Source/Runtime/VulkanRHI/Private/Android/../VulkanGenericPlatform.h(43,59): error: use of undeclared identifier 'SP_VULKAN_SM5'
LogPlayLevel: GShaderPlatformForFeatureLevel[ERHIFeatureLevel::SM5] = SP_VULKAN_SM5;
LogPlayLevel: ^
LogPlayLevel: In file included from D:/UnrealProject/TestAndroid/Intermediate/Build/Android/Test421_all/Development/VulkanRHI/Module.VulkanRHI.1_of_3.cpp:2:
LogPlayLevel: In file included from D:\Build\Release-4_21_0\Engine\Source\Runtime\VulkanRHI\Private\Android\VulkanAndroidPlatform.cpp:13:
LogPlayLevel: Error: D:/Build/Release-4_21_0/Engine/Source/Runtime/VulkanRHI/Private/Android/VulkanAndroidPlatform.h(60,3): error: use of undeclared identifier 'GShaderPlatformForFeatureLevel'
LogPlayLevel: GShaderPlatformForFeatureLevel[ERHIFeatureLevel::ES2] = SP_VULKAN_ES3_1_ANDROID;
LogPlayLevel: ^
LogPlayLevel: Error: D:/Build/Release-4_21_0/Engine/Source/Runtime/VulkanRHI/Private/Android/VulkanAndroidPlatform.h(60,34): error: use of undeclared identifier 'ERHIFeatureLevel'
LogPlayLevel: GShaderPlatformForFeatureLevel[ERHIFeatureLevel::ES2] = SP_VULKAN_ES3_1_ANDROID;
LogPlayLevel: ^
LogPlayLevel: Error: D:/Build/Release-4_21_0/Engine/Source/Runtime/VulkanRHI/Private/Android/VulkanAndroidPlatform.h(60,59): error: use of undeclared identifier 'SP_VULKAN_ES3_1_ANDROID'
LogPlayLevel: GShaderPlatformForFeatureLevel[ERHIFeatureLevel::ES2] = SP_VULKAN_ES3_1_ANDROID;
LogPlayLevel: ^
LogPlayLevel: Error: D:/Build/Release-4_21_0/Engine/Source/Runtime/VulkanRHI/Private/Android/VulkanAndroidPlatform.h(61,3): error: use of undeclared identifier 'GShaderPlatformForFeatureLevel'
LogPlayLevel: GShaderPlatformForFeatureLevel[ERHIFeatureLevel::ES3_1] = SP_VULKAN_ES3_1_ANDROID;
LogPlayLevel: ^
LogPlayLevel: Error: D:/Build/Release-4_21_0/Engine/Source/Runtime/VulkanRHI/Private/Android/VulkanAndroidPlatform.h(61,34): error: use of undeclared identifier 'ERHIFeatureLevel'
LogPlayLevel: GShaderPlatformForFeatureLevel[ERHIFeatureLevel::ES3_1] = SP_VULKAN_ES3_1_ANDROID;
LogPlayLevel: ^
LogPlayLevel: Error: D:/Build/Release-4_21_0/Engine/Source/Runtime/VulkanRHI/Private/Android/VulkanAndroidPlatform.h(61,61): error: use of undeclared identifier 'SP_VULKAN_ES3_1_ANDROID'
LogPlayLevel: GShaderPlatformForFeatureLevel[ERHIFeatureLevel::ES3_1] = SP_VULKAN_ES3_1_ANDROID;
LogPlayLevel: ^
LogPlayLevel: Error: D:/Build/Release-4_21_0/Engine/Source/Runtime/VulkanRHI/Private/Android/VulkanAndroidPlatform.h(62,3): error: use of undeclared identifier 'GShaderPlatformForFeatureLevel'
LogPlayLevel: GShaderPlatformForFeatureLevel[ERHIFeatureLevel::SM4] = SP_NumPlatforms;
LogPlayLevel: ^
LogPlayLevel: Error: fatal error: too many errors emitted, stopping now [-ferror-limit=]
LogPlayLevel: 20 errors generated.
LogPlayLevel: Error executing C:\NVPACK\android-ndk-r14b\toolchains\llvm\prebuilt\windows-x86_64\bin\clang++.exe (tool returned code: 1)
LogPlayLevel: ---------------------- Done ----------------------
LogPlayLevel: Rebuild All: 0 succeeded, 1 failed, 1 up-to-date, 0 skipped
LogPlayLevel: Took 2.2823151s to run xgConsole.exe, ExitCode=1
LogPlayLevel: Error: ERROR: Command failed (Result:1): C:\Program Files (x86)\Xoreax\IncrediBuild\xgConsole.exe "D:\Build\Release-4_21_0\Engine\Programs\AutomationTool\Saved\Logs\UAT_XGE.xml" /Rebuild /NoLogo /ShowAgent /ShowTime /no_watchdog_thread. See logfile for details: 'xgConsole-2018.12.06-11.51.59.txt'
LogPlayLevel: (see D:\Build\Release-4_21_0\Engine\Programs\AutomationTool\Saved\Logs\Log.txt for full exception trace)
LogPlayLevel: AutomationTool exiting with ExitCode=1 (Error_Unknown)
LogPlayLevel: Completed Launch On Stage: Build Task, Time: 9.250432
LogPlayLevel: BUILD FAILED
PackagingResults: Error: Launch failed! Unknown Error

After adding #include "RHI.h" to VulkanGenericPlatform.h, this issue does not occur.

Steps to Reproduce

Add following code to <ProjectName>.Target.cs
bUsePCHFiles = false;
Launch on Android
Error occurs

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Fixed

Component	UE - Graphics Features
Affects Versions	4.21
Target Fix	4.22

Fix Commit	4653118
Main Commit	4854553
Release Commit	4862694

Created	Dec 6, 2018
Resolved	Dec 12, 2018
Updated	Sep 16, 2019

View Jira Issue

UE-67241

When PCH is Disabled, Error Occurs in VulkanGenericPlatform.h at Android Build

When PCH is Disabled, Error Occurs in VulkanGenericPlatform.h at Android Build

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