System.Web.Compilation.AppResourcesAssemblyBuilder.SetAlPath C# (CSharp) Method

		string SetAlPath (ProcessStartInfo info)
		{			
			if (RuntimeHelpers.RunningOnWindows) {
				string alPath;
				string monoPath;
				PropertyInfo gac = typeof (Environment).GetProperty ("GacPath", BindingFlags.Static|BindingFlags.NonPublic);
                                MethodInfo get_gac = gac.GetGetMethod (true);
                                string p = Path.GetDirectoryName ((string) get_gac.Invoke (null, null));
				monoPath = Path.Combine (Path.GetDirectoryName (Path.GetDirectoryName (p)), "bin\\mono.bat");
                                if (!File.Exists (monoPath)) {
                                        monoPath = Path.Combine (Path.GetDirectoryName (Path.GetDirectoryName (p)), "bin\\mono.exe");
					if (!File.Exists (monoPath)) {
						monoPath = Path.Combine (Path.GetDirectoryName (Path.GetDirectoryName (Path.GetDirectoryName (p))), "mono\\mono\\mini\\mono.exe");
						if (!File.Exists (monoPath))
							throw new FileNotFoundException ("Windows mono path not found: " + monoPath);
					}
				}

#if NET_4_0
                                alPath = Path.Combine (p, "4.0\\al.exe");
#else
                                alPath = Path.Combine (p, "2.0\\al.exe");
#endif
                                if (!File.Exists (alPath)) {
#if NET_4_0
                                        alPath = Path.Combine(Path.GetDirectoryName (p), "lib\\net_4_0\\al.exe");
#else
                                        alPath = Path.Combine(Path.GetDirectoryName (p), "lib\\net_2_0\\al.exe");
#endif
					if (!File.Exists (alPath))
						throw new FileNotFoundException ("Windows al path not found: " + alPath);
				}

				info.FileName = monoPath;
				return alPath + " ";
			} else {
#if NET_4_0
				info.FileName = "al";
#else
				info.FileName = "al2";
#endif
				return String.Empty;
			}
		}