Utility used to execute console commands (like the one to compile CMake projects) during the compilation steps of Unreal Engine.

MBuildUtils.cs

// Utility used to execute console commands (like the one to compile CMake projects) during the compilation steps of Unreal Engine.

public class MBuildUtils
{
	public string MModulePath = "";

    // Taken from UE4Cmake - Kudos to `caseymcc`
    private Tuple<string, string> GetExecuteCommandSync()
    {
        string cmd = "";
        string options = "";

        if((BuildHostPlatform.Current.Platform == UnrealTargetPlatform.Win64) 
#if !UE_5_0_OR_LATER
            || (BuildHostPlatform.Current.Platform == UnrealTargetPlatform.Win32)
#endif//!UE_5_0_OR_LATER
            )
        {
            cmd="cmd.exe";
            options="/c ";
        }
        else if(IsUnixPlatform(BuildHostPlatform.Current.Platform)) 
        {
            cmd="bash";
            options="-c ";
        }
        return Tuple.Create(cmd, options);
    }

    public int ExecuteCommandSync(string command)
    {
        var cmdInfo = GetExecuteCommandSync();

        if(IsUnixPlatform(BuildHostPlatform.Current.Platform)) 
        {
            command=" \""+command.Replace("\"", "\\\"")+" \"";
        }

        Console.WriteLine("Calling: "+cmdInfo.Item1+" "+cmdInfo.Item2+command);

        var processInfo = new ProcessStartInfo(cmdInfo.Item1, cmdInfo.Item2+command)
        {
            CreateNoWindow=true,
            UseShellExecute=false,
            RedirectStandardError=true,
            RedirectStandardOutput=true,
            WorkingDirectory=MModulePath
        };

        StringBuilder outputString = new StringBuilder();
        Process p = Process.Start(processInfo);

        p.OutputDataReceived+=(sender, args) => {outputString.Append(args.Data); Console.WriteLine(args.Data);};
        p.ErrorDataReceived+=(sender, args) => {outputString.Append(args.Data); Console.WriteLine(args.Data);};
        p.BeginOutputReadLine();
        p.BeginErrorReadLine();
        p.WaitForExit();

        if(p.ExitCode != 0)
        {
             Console.WriteLine(outputString);
        }
        return p.ExitCode;
    }

    private bool IsUnixPlatform(UnrealTargetPlatform platform) {
        return platform == UnrealTargetPlatform.Linux || platform == UnrealTargetPlatform.Mac;
    }
    
    public static string GetCMake()
    {
        string program = "cmake";

        if((BuildHostPlatform.Current.Platform == UnrealTargetPlatform.Win64) 
#if !UE_5_0_OR_LATER
            || (BuildHostPlatform.Current.Platform == UnrealTargetPlatform.Win32)
#endif//!UE_5_0_OR_LATER
            )
        {
            program+=".exe";
        }
        return program;
    }
}