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coopbri/build-ue5-linux.md

Last active July 15, 2025 18:50
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Build Unreal Engine 5 on Linux
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build-ue5-linux.md
  1. Clone repo (or sync with git pull if already cloned):
git clone https://github.com/EpicGames/UnrealEngine
  1. Run setup script:
./Setup.sh
  1. Run project file generation script:
./GenerateProjectFiles.sh

If you get the error

Setting up bundled DotNet SDK
Process terminated. Couldn't find a valid ICU package installed on the system. Set the configuration flag System.Globalization.Invariant to true if you want to run with no globalization support.
...
GenerateProjectFiles ERROR: Failed to build UnrealBuildTool

try setting environment variable DOTNET_SYSTEM_GLOBALIZATION_INVARIANT=1, or installing ICU v50 (courtesy of @debian-user-france1).

  1. Finally, run the build:
make
@RokeJulianLockhart
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DOTNET_SYSTEM_GLOBALIZATION_INVARIANT doesn't appear to be required with dotnet 9.0.107.

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