Arch Linux User Repository

@juancarlospaco this is easily done on your own system, not in a PKGBUILD, given that building packages runs as root:

sudo groupadd unrealengine-users
sudo usermod -aG unrealengine-users (your-username)
sudo chown -R root:unrealengine-users /opt/unreal-engine
sudo chmod -R 775 /opt/unreal-engine

Permission issues like this are already mentioned on the UE Arch wiki page: https://wiki.archlinux.org/title/Unreal_Engine_4#Installing_from_the_AUR

This is a user system problem; I already did what I could without needing users to do the above by giving the 777 permissions. If it still gives you trouble, you'll have to use the example to solve it or change the install location to somewhere you have user permissions by default (as I cannot do this for you).

Will update to 5.0 when it is released.

@mihirlad55 the best solution for now is downgrading to clang 11.1. I'm not on Twitter, but try tweeting at Tim Sweeney about this. I think he wrote the initial code. He might be able to fix it really quick.

Ну что, будет обновление до 4.26.2-6? У меня ошибка компиляции текущей версии. То обновления часто, то сейчас блин когда проблемы никто не решает!

@zerophase @zepvalue

I am also segfaulting on startup

Application version 4.26.2.0
 ... built from changelist 0

OS version Linux 5.12.4-arch1-2 (network name: iphone)
Running 4 x86_64 processors (8 logical cores)
Exception was "SIGSEGV: invalid attempt to read memory at address 0x0000000000000038"

libUE4Editor-CoreUObject.so!UStruct::IsChildOf(UStruct const*) const [/home/mihirlad55/.cache/yay/unreal-engine/src/unrealengine/Engine/Source/Runtime/CoreUObject/Private/UObject/Class.cpp:2204]
libUE4Editor-AudioSynesthesiaEditor.so!void FAudioSynesthesiaEditorModule::RegisterAudioSynesthesiaAssetActions<UAudioSynesthesiaNRT, FAssetTypeActions_AudioSynesthesiaNRT>() [/home/mihirlad55/.cache/yay/unreal-engine/src/unreal-engine/Engine/Plugins/Runtime/AudioSynesthesia/Source/AudioSynesthesiaEditor/Private/AudioSynesthesiaEditorModule.cpp:57]
libUE4Editor-AudioSynesthesiaEditor.so!FAudioSynesthesiaEditorModule::RegisterAssetActions() [/home/mihirlad55/.cache/yay/unreal-engine/src/unreal-engine/Engine/Plugins/Runtime/AudioSynesthesia/Source/AudioSynesthesiaEditor/Private/AudioSynesthesiaEditorModule.cpp:31]
libUE4Editor-Core.so!FModuleManager::LoadModuleWithFailureReason(FName, EModuleLoadResult&) [/home/mihirlad55/.cache/yay/unreal-engine/src/unreal- engine/Engine/Source/Runtime/Core/Private/Modules/ModuleManager.cpp:536]
libUE4Editor-Projects.so!FModuleDescriptor::LoadModulesForPhase(ELoadingPhase::Type, TArray<FModuleDescriptor, TSizedDefaultAllocator<32> > const&, TMap<FName, EModuleLoadResult, FDefaultSetAllocator, TDefaultMapHashableKeyFuncs<FName, EModuleLoadResult, false> >&) [/home/mihirlad55/.cache/yay/unreal-engine/src/unreal-engine/Engine/Source/Runtime/Projects/Private/ModuleDescriptor.cpp:560]
libUE4Editor-Projects.so!FPluginManager::TryLoadModulesForPlugin(FPlugin const&, ELoadingPhase::Type) const [/home/mihirlad55/.cache/yay/unreal-engine/src/unreal-engine/Engine/Source/Runtime/Projects/Private/PluginManager.cpp:1293]
libUE4Editor-Projects.so!FPluginManager::LoadModulesForEnabledPlugins(ELoadingPhase::Type) [/home/mihirlad55/.cache/yay/unreal-engine/src/unreal-engine/Engine/Source/Runtime/Projects/Private/PluginManager.cpp:1369]
UE4Editor!FEngineLoop::LoadStartupModules() [/home/mihirlad55/.cache/yay/unreal-engine/src/unreal-engine/Engine/Source/Runtime/Launch/Private/LaunchEngineLoop.cpp:3822]
UE4Editor!FEngineLoop::PreInitPostStartupScreen(char16_t const*) [/home/mihirlad55/.cache/yay/unreal-engine/src/unreal-engine/Engine/Source/Runtime/Launch/Private/LaunchEngineLoop.cpp:3198]
UE4Editor!GuardedMain(char16_t const*) [/home/mihirlad55/.cache/yay/unreal-engine/src/unreal-engine/Engine/Source/Runtime/Launch/Private/Launch.cpp:127]
libUE4Editor-UnixCommonStartup.so!CommonUnixMain(int, char**, int (*)(char16_t const*), void (*)()) [/home/mihirlad55/.cache/yay/unreal-engine/src/unreal-engine/Engine/Source/Runtime/Unix/UnixCommonStartup/Private/UnixCommonStartup.cpp:264]
libc.so.6!__libc_start_main(+0xd4)

@zepvalue. Seems to be an issue with Clang 12. It's a run time bug.

@zerophase It happened before anything was built.

Apparently there was no directory /etc/mono/registry/LocalMachine. Got around it by manually creating it.

@pencilshavings Are you trying to run it after installing? Those errors are related to you not having file permissions.

B) I'd report that to upstream

Two things,

A. Cant get it to install. Errors out with,

ERROR: Unhandled exception: System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.Security.SecurityException: No access to the given key ---> System.UnauthorizedAccessException: Access to the path '/etc/mono/registry/LocalMachine' is denied. ---> System.IO.IOException: Permission denied

==> ERROR: A failure occurred in prepare().

B. The UE4 file assosiator dialog appears but not in the correct language.

@zepvalue When do you segfault?

On the latest update ( 4.26.2-5 ) I keep getting a SIGNAL 11 segmentation fault crash...anybody else experienced this ?

Hi zerophase as the patches are turned back on, the packages must be moved to depends. I have created my own PKGBUILD with some engine version changes etc. In my PKGBUILD i have it setup like this-

depends=(icu sdl2 python lld xdg-user-dirs ccache clang mono mono-msbuild dos2unix git openssh)

The IDEs should remain in optdepends.

Also patches will have to be reworked for Unreal Engine 5 as patches won't apply due to the changes. I have created a PKGBUILD without patches for UE 5 :) Thanks.