/// <summary>
/// UBT startup order is fairly fragile, and relies on globals that may or may not be safe to use yet.
/// This function is for super early startup stuff that should not access Configuration classes (anything loaded by XmlConfg).
/// This should be very minimal startup code.
/// </summary>
/// <param name="Arguments">Cmdline arguments</param>
private static void DoStartupStuffThatCannotAccessConfigurationClasses(string[] Arguments)
{
// Helpers used for stats tracking.
StartTime = DateTime.UtcNow;
// Do super early log init as a safeguard. We'll re-init with proper config options later.
PreInitLogging();
// ensure we can resolve any external assemblies that are not in the same folder as our assembly.
AssemblyUtils.InstallAssemblyResolver(Path.GetDirectoryName(Assembly.GetEntryAssembly().GetOriginalLocation()));
// Copy off the arguments to allow checking for command-line arguments elsewhere
CmdLine = new List<string>(Arguments);
// Grab the environment.
InitialEnvironment = Environment.GetEnvironmentVariables();
if (InitialEnvironment.Count < 1)
{
throw new BuildException("Environment could not be read");
}
// Change the working directory to be the Engine/Source folder. We are likely running from Engine/Binaries/DotNET
// This is critical to be done early so any code that relies on the current directory being Engine/Source will work.
// UEBuildConfiguration.PostReset is susceptible to this, so we must do this before configs are loaded.
string EngineSourceDirectory = Path.Combine(Path.GetDirectoryName(Assembly.GetEntryAssembly().GetOriginalLocation()), "..", "..", "..", "Engine", "Source");
//@todo.Rocket: This is a workaround for recompiling game code in editor
// The working directory when launching is *not* what we would expect
if (Directory.Exists(EngineSourceDirectory) == false)
{
// We are assuming UBT always runs from <>/Engine/Binaries/DotNET/...
EngineSourceDirectory = Assembly.GetExecutingAssembly().GetOriginalLocation();
EngineSourceDirectory = EngineSourceDirectory.Replace("\\", "/");
Int32 EngineIdx = EngineSourceDirectory.IndexOf("/Engine/Binaries/DotNET/", StringComparison.InvariantCultureIgnoreCase);
if (EngineIdx != 0)
{
EngineSourceDirectory = Path.Combine(EngineSourceDirectory.Substring(0, EngineIdx), "Engine", "Source");
}
}
if (Directory.Exists(EngineSourceDirectory)) // only set the directory if it exists, this should only happen if we are launching the editor from an artist sync
{
Directory.SetCurrentDirectory(EngineSourceDirectory);
}
}