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.

ln: failed to create symbolic link '/usr/lib/ssl': Permission denied

Tried with both yay and manual

Update: Did these two steps manually and edited PKGBUILD file and its working so far

I've made ab attempt to fix the NuGet ussue; I'll attempt the env variable next if this doesn't work.

Let me know if you encounter this again; I kind of have some stuff going on, so I won't be able to test this (especially since I don't experience this problem)

I solved this problem on Fedora by adding an environment variable DOTNET_SYSTEM_NET_HTTP_USESOCKETSHTTPHANDLER=0

@Neko-san I've tried what you mentionned below (with makepkg) but I have the same exact error as @doskanoness and I'm pretty sure that 1) and 2) are not a problem.

...
./v20_clang-13.0.1-centos7/x86_64-unknown-linux-gnu/usr/lib64/libnsl.a

Target arch set to: x86_64-unknown-linux-gnu
Building ThirdParty libraries

If you don't see SUCCESS message in the end, then building did not finish properly.
In that case, take a look into /home/xavierp/Downloads/unreal-engine/src/unreal-engine/Engine/Build/BatchFiles/Linux/BuildThirdParty.log for details.

No third party libs needed to be built locally

**********  SUCCESS ****************
Setup successful.
==> Starting build()...

Running AutomationTool...

Fixing inconsistent case in filenames.
Setting up Mono
Setting up bundled DotNet SDK
Rebuilding: AutomationTool assembly not found
/home/xavierp/Downloads/unreal-engine/src/unreal-engine/Engine/Binaries/ThirdParty/DotNet/Linux/sdk/3.1.401/NuGet.targets(255,5): error : Unable to load the service index for source https://api.nuget.org/v3/index.json. [/home/xavierp/Downloads/unreal-engine/src/unreal-engine/Engine/Source/Programs/AutomationTool/AutomationTool.csproj]
/home/xavierp/Downloads/unreal-engine/src/unreal-engine/Engine/Binaries/ThirdParty/DotNet/Linux/sdk/3.1.401/NuGet.targets(255,5): error :   The SSL connection could not be established, see inner exception. [/home/xavierp/Downloads/unreal-engine/src/unreal-engine/Engine/Source/Programs/AutomationTool/AutomationTool.csproj]
/home/xavierp/Downloads/unreal-engine/src/unreal-engine/Engine/Binaries/ThirdParty/DotNet/Linux/sdk/3.1.401/NuGet.targets(255,5): error :   The remote certificate is invalid according to the validation procedure. [/home/xavierp/Downloads/unreal-engine/src/unreal-engine/Engine/Source/Programs/AutomationTool/AutomationTool.csproj]
Compilation failed
RunUAT ERROR: AutomationTool failed to compile.
==> ERROR: A failure occurred in build().
    Aborting...

@doskanoness Unable to load the service index for source. Isn't this the NuGet cert issue mentioned few pages below? If so either symlink the system certs or import the anchors to the user storage.

@doskanoness I'm not entirely certain of this issue but it appears as though something's happening here that doesn't look like it should be the case...

It calls the Automation Tool, which looks like it's running, until it suddenly decides it's missing something then stops...

A few questions: 1) you should have been prompted by two or three SSH passphrase prompts, did you enter all of them? 2) Are you sure you had enough storage space for the mono dependencies and didn't run out? 3) If yes to both of the prior, try using makepkg and see if it happens again instead of yay; I've had this same version tested the other day with makepkg and it wasn't a problem, so I'd like to see if that's consistent for you

I get this error:

Target arch set to: x86_64-unknown-linux-gnu
Building ThirdParty libraries

If you don't see SUCCESS message in the end, then building did not finish properly.
In that case, take a look into /home/doskanoness/.cache/yay/unreal-engine/src/unreal-engine/Engine/Build/BatchFiles/Linux/BuildThirdParty.log for details.

No third party libs needed to be built locally

**********  SUCCESS ****************
Setup successful.
==> Sources are ready.
==> Making package: unreal-engine 5.0.2-3 (Fri 01 Jul 2022 04:13:00 AM CEST)
==> Checking runtime dependencies...
==> Checking buildtime dependencies...
==> WARNING: Using existing $srcdir/ tree
==> Starting build()...

Running AutomationTool...

Fixing inconsistent case in filenames.
Setting up Mono
Setting up bundled DotNet SDK 
Rebuilding: AutomationTool assembly not found
/home/doskanoness/.cache/yay/unreal-engine/src/unreal-engine/Engine/Binaries/ThirdParty/DotNet/Linux/sdk/3.1.401/NuGet.targets(255,5): error : Unable to load the service index for source https://api.nuget.org/v3/index.json. [/home/doskanoness/.cache/yay/unreal-engine/src/unreal-engine/Engine/Source/Programs/AutomationTool/AutomationTool.csproj]
/home/doskanoness/.cache/yay/unreal-engine/src/unreal-engine/Engine/Binaries/ThirdParty/DotNet/Linux/sdk/3.1.401/NuGet.targets(255,5): error :   The SSL connection could not be established, see inner exception. [/home/doskanoness/.cache/yay/unreal-engine/src/unreal-engine/Engine/Source/Programs/AutomationTool/AutomationTool.csproj]
/home/doskanoness/.cache/yay/unreal-engine/src/unreal-engine/Engine/Binaries/ThirdParty/DotNet/Linux/sdk/3.1.401/NuGet.targets(255,5): error :   The remote certificate is invalid according to the validation procedure. [/home/doskanoness/.cache/yay/unreal-engine/src/unreal-engine/Engine/Source/Programs/AutomationTool/AutomationTool.csproj]
Compilation failed
RunUAT ERROR: AutomationTool failed to compile.
==> ERROR: A failure occurred in build().
    Aborting...
 -> error making: unreal-engine

@Shatur I'd be willing to look after it, if you don't mind?

Actually, he just told me he ironically didn't have an AUR account, so he deferred to myself instead

@Shatur That's why I made a switch for it Lol, but I'll get back to that in a minute

I know a dude that wouldn't mind, I've actually been talking to him about this for quite some time; I'll hit him up

As for the switch I mentioned, we can leave it off by default, but I figured there would only be theoretical performance gains by doing so