GameLift Plugin Fails to Compile in Unreal Engine 5.4

Question

Dear AWS Support Team,

I am reaching out regarding an issue I’m encountering with the GameLift plugin in Unreal Engine 5.4.

I have downloaded the correct version of the plugin from GitHub and followed all setup instructions provided in the official documentation. However, when I attempt to compile the project, I receive numerous compiler errors that prevent a successful build.

Here are some of the errors I’m seeing:
```
SClientBuildModal.h(37): error C4430: missing type specifier - int assumed. Note: C++ does not support default-int  
SClientBuildModal.h(37): error C2143: syntax error: missing ',' before '*'  
SBootstrapStatus.cpp(77): error C2065: 'UGameLiftSettings': undeclared identifier  
SBootstrapStatus.cpp(77): error C2882: 'Settings': illegal use of namespace identifier in expression  
SBootstrapStatus.cpp(77): error C2672: 'GetMutableDefault': no matching overloaded function found  
SGameLiftDeployManagedEC2Menu.h(56): error C2065: 'SSetupMessage': undeclared identifier

etc
```
I would greatly appreciate it if you could provide guidance or clarify whether the plugin is compatible with Unreal Engine 5.4. If there are any updated instructions or fixes for these errors, please let me know.

UPD. I found a solution that worked in my case:
You need to add bUseAdaptiveUnityBuild = false; to your Editor.Target.cs file — after that, everything compiled successfully.

Thank you for your assistance!

Best regards,
Mike

re:Post Agent · Answer

Thank you for reaching out about the issue you're experiencing with the GameLift plugin in Unreal Engine 5.4. I apologize for the inconvenience this is causing you.

Based on the information provided, it appears that you may be encountering compatibility issues between the GameLift plugin and Unreal Engine 5.4. The GameLift plugin is designed to work with specific versions of Unreal Engine, and it's possible that the version you're using isn't fully supported yet.

To address this, I recommend the following steps:

1. First, ensure that you're using the latest version of the GameLift plugin compatible with Unreal Engine 5.4. The plugin supports Unreal Editor versions 5.1, 5.2, 5.3, 5.4, and 5.5, but these need to be built from source.

2. Make sure you have built your Unreal Engine 5.4 from source. This is a requirement for using the GameLift plugin with Unreal Engine.

3. Double-check that you've correctly installed the Amazon GameLift plugin for Unreal. The installation process should be followed precisely to avoid any issues.

4. Verify that you have all the necessary prerequisites, including an AWS account with the appropriate permissions, and that you've set up your AWS credentials correctly.

5. If you're still encountering issues after confirming these steps, you may need to check for any conflicts with other plugins or project settings.

If the problem persists after trying these steps, I recommend reaching out to the AWS GameTech support team or posting on the AWS GameTech forums for more specific assistance. They may be able to provide more detailed troubleshooting steps or information about any known issues with the current version of the plugin.

Remember to include details about your exact Unreal Engine version, the version of the GameLift plugin you're using, and any specific error messages you're encountering when seeking further support.

We appreciate your patience as we continually work to improve compatibility and resolve issues with our tools and services.  
**Sources**  
[Local testing to cloud deployment: development workflows in Amazon GameLift | AWS for Games Blog](https://aws.amazon.com/blogs/gametech/local-testing-to-cloud-deployment-development-workflows-in-amazon-gamelift/)  
[Plugin for Unreal: Integrate your game code - Amazon GameLift Servers](https://docs.aws.amazon.com/gamelift/latest/developerguide/unreal-plugin-integrate.html)

GameLift Plugin Fails to Compile in Unreal Engine 5.4

Relevant content