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Unreal Engine Slim Source Build

Created On18/12/2021
Updated On19/03/2022
byDarknessFX

To build Unreal Engine from source with only Windows platform selected, you need to call Setup.bat with this arguments :

./Setup.bat -exclude=Mac -exclude=osx64 -exclude=osx32 -exclude=iOS -exclude=Linux32 -exclude=HoloLens -exclude=TVOS -exclude=Win32 -exclude=WinRT -exclude=HTML5 -exclude=XboxOne -exclude=Switch -exclude=Dingo -exclude=PS4 -exclude=LeapMotion

After you run this Setup.bat and GenerateProjectFiles.bat , edit the file \Engine\Intermediate\ProjectFiles\AutomationTool.csproj.References and manually remove references to unwanted platforms, for UE5 it should look like this :

&lt;?xml version="1.0" encoding="utf-8"?>
&lt;Project ToolsVersion="16.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
  &lt;ItemGroup>
    &lt;ProjectReference Include="AutomationUtils\AutomationUtils.Automation.csproj" />
    &lt;ProjectReference Include="BuildGraph\BuildGraph.Automation.csproj" />
    &lt;ProjectReference Include="CookedEditor\CookedEditor.Automation.csproj" />
    &lt;ProjectReference Include="CrowdinLocalization\CrowdinLocalization.Automation.csproj" />
    &lt;ProjectReference Include="Gauntlet\Gauntlet.Automation.csproj" />
    &lt;ProjectReference Include="Localization\Localization.Automation.csproj" />
    &lt;ProjectReference Include="LowLevelTests\LowLevelTests.Automation.csproj" />
    &lt;ProjectReference Include="OneSkyLocalization\OneSkyLocalization.Automation.csproj" />
    &lt;ProjectReference Include="Scripts\AutomationScripts.Automation.csproj" />
    &lt;ProjectReference Include="Turnkey\Turnkey.Automation.csproj" />
    &lt;ProjectReference Include="Win\Win.Automation.csproj" />
    &lt;ProjectReference Include="XLocLocalization\XLocLocalization.Automation.csproj" />
  &lt;/ItemGroup>
&lt;/Project>

Open UE5.sln .
Right-click Solution>Engine>UE5 and select Set as Startup Project .
Right-click Solution>Programs>UnrealBuildTool and Build .
Open Solution\Programs\Automation\CookedEditor.Automation\PlatformWrappers.cs ( path = \Engine\Source\Programs\AutomationTool\CookedEditor\PlatformWrappers.cs ) and delete all unwanted platforms.
Right-click Solution>Programs>AutomationTool and Build .
Right-click Solution and Build Solution .

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