mcs/tools/mkbundle/mkbundle.cs

   1 //
   2 // mkbundle: tool to create bundles.
   3 //
   4 // Based on the `make-bundle' Perl script written by Paolo Molaro (lupus@debian.org)
   5 //
   6 // TODO:
   7 //   [x] Rename the paths for the zip file that is downloaded
   8 //   [x] Update documentation with new flag
   9 //   [x] Load internationalized assemblies
  10 //   [x] Dependencies - if System.dll -> include Mono.Security.* (not needed, automatic)
  11 //   [x] --list-targets should download from a different url
  12 //   [x] --fetch-target should unpack zip file
  13 //   [x] Update --cross to use not a runtime, but an SDK
  14 //   [x] Update --local-targets to show the downloaded SDKs
  15 //
  16 // Author:
  17 //   Miguel de Icaza
  18 //
  19 // (C) Novell, Inc 2004
  20 // (C) 2016 Xamarin Inc
  21 //
  22 // Missing features:
  23 // * Add support for packaging native libraries, extracting at runtime and setting the library path.
  24 // * Implement --list-targets lists all the available remote targets
  25 //
  26 using System;
  27 using System.Diagnostics;
  28 using System.Xml;
  29 using System.Collections.Generic;
  30 using System.IO;
  31 using System.IO.Compression;
  32 using System.Runtime.InteropServices;
  33 using System.Text;
  34 using IKVM.Reflection;
  35 using System.Linq;
  36 using System.Net;
  37 using System.Threading.Tasks;
  38
  39 class MakeBundle {
  40         static string output = "a.out";
  41         static string object_out = null;
  42         static List<string> link_paths = new List<string> ();
  43         static Dictionary<string,string> libraries = new Dictionary<string,string> ();
  44         static bool autodeps = false;
  45         static bool keeptemp = false;
  46         static bool compile_only = false;
  47         static bool static_link = false;
  48         static string config_file = null;
  49         static string machine_config_file = null;
  50         static string config_dir = null;
  51         static string style = "linux";
  52         static bool bundled_header = false;
  53         static string os_message = "";
  54         static bool compress;
  55         static bool nomain;
  56         static string custom_main = null;
  57         static bool? use_dos2unix = null;
  58         static bool skip_scan;
  59         static string ctor_func;
  60         static bool quiet = true;
  61         static string cross_target = null;
  62         static string fetch_target = null;
  63         static bool custom_mode = true;
  64         static string embedded_options = null;
  65         static string runtime = null;
  66         static bool aot_compile = false;
  67         static string aot_args = "static";
  68         static string sdk_path = null;
  69         static string lib_path = null;
  70         static Dictionary<string,string> environment = new Dictionary<string,string>();
  71         static string [] i18n = new string [] {
  72                 "West",
  73                 ""
  74         };
  75         static string [] i18n_all = new string [] {
  76                 "CJK",
  77                 "MidEast",
  78                 "Other",
  79                 "Rare",
  80                 "West",
  81                 ""
  82         };
  83         static string target_server = "https://download.mono-project.com/runtimes/raw/";
  84
  85         static int Main (string [] args)
  86         {
  87                 List<string> sources = new List<string> ();
  88                 int top = args.Length;
  89                 link_paths.Add (".");
  90
  91                 DetectOS ();
  92
  93                 for (int i = 0; i < top; i++){
  94                         switch (args [i]){
  95                         case "--help": case "-h": case "-?":
  96                                 Help ();
  97                                 return 1;
  98
  99                         case "--simple":
 100                                 custom_mode = false;
 101                                 autodeps = true;
 102                                 break;
 103
 104                         case "-v":
 105                                 quiet = false;
 106                                 break;
 107
 108                         case "--i18n":
 109                                 if (i+1 == top){
 110                                         Help ();
 111                                         return 1;
 112                                 }
 113                                 var iarg = args [++i];
 114                                 if (iarg == "all")
 115                                         i18n = i18n_all;
 116                                 else if (iarg == "none")
 117                                         i18n = new string [0];
 118                                 else
 119                                         i18n = iarg.Split (',');
 120                                 break;
 121
 122                         case "--custom":
 123                                 custom_mode = true;
 124                                 break;
 125
 126                         case "-c":
 127                                 compile_only = true;
 128                                 break;
 129
 130                         case "--local-targets":
 131                                 CommandLocalTargets ();
 132                                 return 0;
 133
 134                         case "--cross":
 135                                 if (i+1 == top){
 136                                         Help ();
 137                                         return 1;
 138                                 }
 139                                 if (sdk_path != null || runtime != null)
 140                                         Error ("You can only specify one of --runtime, --sdk or --cross");
 141                                 custom_mode = false;
 142                                 autodeps = true;
 143                                 cross_target = args [++i];
 144                                 break;
 145
 146                         case "--library":
 147                                 if (i+1 == top){
 148                                         Help ();
 149                                         return 1;
 150                                 }
 151                                 if (custom_mode){
 152                                         Console.Error.WriteLine ("--library can only be used with --simple/--runtime/--cross mode");
 153                                         Help ();
 154                                         return 1;
 155                                 }
 156                                 var lspec = args [++i];
 157                                 var p = lspec.IndexOf (",");
 158                                 string alias, path;
 159                                 if (p == -1){
 160                                         alias = Path.GetFileName (lspec);
 161                                         path = lspec;
 162                                 } else {
 163                                         alias = lspec.Substring (0, p);
 164                                         path = lspec.Substring (p+1);
 165                                 }
 166                                 if (!File.Exists (path))
 167                                         Error ($"The specified library file {path} does not exist");
 168                                 libraries [alias] = path;
 169                                 break;
 170
 171                         case "--fetch-target":
 172                                 if (i+1 == top){
 173                                         Help ();
 174                                         return 1;
 175                                 }
 176                                 fetch_target = args [++i];
 177                                 break;
 178
 179                         case "--list-targets":
 180                                 CommandLocalTargets ();
 181                                 var wc = new WebClient ();
 182                                 var s = wc.DownloadString (new Uri (target_server + "target-sdks.txt"));
 183                                 Console.WriteLine ("Targets available for download with --fetch-target:\n" + s);
 184                                 return 0;
 185
 186                         case "--target-server":
 187                                 if (i+1 == top){
 188                                         Help ();
 189                                         return 1;
 190                                 }
 191                                 target_server = args [++i];
 192                                 break;
 193
 194                         case "-o":
 195                                 if (i+1 == top){
 196                                         Help ();
 197                                         return 1;
 198                                 }
 199                                 output = args [++i];
 200                                 break;
 201
 202                         case "--options":
 203                                 if (i+1 == top){
 204                                         Help ();
 205                                         return 1;
 206                                 }
 207                                 embedded_options = args [++i];
 208                                 break;
 209                         case "--sdk":
 210                                 if (i + 1 == top) {
 211                                         Help ();
 212                                         return 1;
 213                                 }
 214                                 custom_mode = false;
 215                                 autodeps = true;
 216                                 sdk_path = args [++i];
 217                                 if (cross_target != null || runtime != null)
 218                                         Error ("You can only specify one of --runtime, --sdk or --cross");
 219                                 break;
 220                         case "--runtime":
 221                                 if (i+1 == top){
 222                                         Help ();
 223                                         return 1;
 224                                 }
 225                                 if (sdk_path != null || cross_target != null)
 226                                         Error ("You can only specify one of --runtime, --sdk or --cross");
 227                                 custom_mode = false;
 228                                 autodeps = true;
 229                                 runtime = args [++i];
 230                                 break;
 231                         case "-oo":
 232                                 if (i+1 == top){
 233                                         Help ();
 234                                         return 1;
 235                                 }
 236                                 object_out = args [++i];
 237                                 break;
 238
 239                         case "-L":
 240                                 if (i+1 == top){
 241                                         Help ();
 242                                         return 1;
 243                                 }
 244                                 link_paths.Add (args [++i]);
 245                                 break;
 246
 247                         case "--nodeps":
 248                                 autodeps = false;
 249                                 break;
 250
 251                         case "--deps":
 252                                 autodeps = true;
 253                                 break;
 254
 255                         case "--keeptemp":
 256                                 keeptemp = true;
 257                                 break;
 258
 259                         case "--static":
 260                                 static_link = true;
 261                                 break;
 262                         case "--config":
 263                                 if (i+1 == top) {
 264                                         Help ();
 265                                         return 1;
 266                                 }
 267
 268                                 config_file = args [++i];
 269                                 break;
 270                         case "--machine-config":
 271                                 if (i+1 == top) {
 272                                         Help ();
 273                                         return 1;
 274                                 }
 275
 276                                 machine_config_file = args [++i];
 277
 278                                 if (!quiet)
 279                                         Console.WriteLine ("WARNING:\n  Check that the machine.config file you are bundling\n  doesn't contain sensitive information specific to this machine.");
 280                                 break;
 281                         case "--config-dir":
 282                                 if (i+1 == top) {
 283                                         Help ();
 284                                         return 1;
 285                                 }
 286
 287                                 config_dir = args [++i];
 288                                 break;
 289                         case "-z":
 290                                 compress = true;
 291                                 break;
 292                         case "--nomain":
 293                                 nomain = true;
 294                                 break;
 295                         case "--custom-main":
 296                                 if (i+1 == top) {
 297                                         Help ();
 298                                         return 1;
 299                                 }
 300                                 custom_main = args [++i];
 301                                 break;
 302                         case "--style":
 303                                 if (i+1 == top) {
 304                                         Help ();
 305                                         return 1;
 306                                 }
 307                                 style = args [++i];
 308                                 switch (style) {
 309                                 case "windows":
 310                                 case "mac":
 311                                 case "linux":
 312                                         break;
 313                                 default:
 314                                         Error ("Invalid style '{0}' - only 'windows', 'mac' and 'linux' are supported for --style argument", style);
 315                                         return 1;
 316                                 }
 317
 318                                 break;
 319                         case "--skip-scan":
 320                                 skip_scan = true;
 321                                 break;
 322                         case "--static-ctor":
 323                                 if (i+1 == top) {
 324                                         Help ();
 325                                         return 1;
 326                                 }
 327                                 ctor_func = args [++i];
 328                                 break;
 329                         case "--dos2unix":
 330                         case "--dos2unix=true":
 331                                 use_dos2unix = true;
 332                                 break;
 333                         case "--dos2unix=false":
 334                                 use_dos2unix = false;
 335                                 break;
 336                         case "-q":
 337                         case "--quiet":
 338                                 quiet = true;
 339                                 break;
 340                         case "-e":
 341                         case "--env":
 342                                 if (i+1 == top) {
 343                                         Help ();
 344                                         return 1;
 345                                 }
 346                                 var env = args [++i];
 347                                 p = env.IndexOf ('=');
 348                                 if (p == -1)
 349                                         environment.Add (env, "");
 350                                 else
 351                                         environment.Add (env.Substring (0, p), env.Substring (p+1));
 352                                 break;
 353                         case "--bundled-header":
 354                                 bundled_header = true;
 355                                 break;
 356                         case "--aot-compile":
 357                                 aot_compile = true;
 358                                 break;
 359                         case "--aot-args":
 360                                 if (i+1 == top) {
 361                                         Console.WriteLine ("AOT arguments are passed as a comma-delimited list");
 362                                         return 1;
 363                                 }
 364                                 aot_args = String.Format("static,{0}", args [++i]);
 365                                 break;
 366                         default:
 367                                 sources.Add (args [i]);
 368                                 break;
 369                         }
 370                 }
 371                 // Modern bundling starts here
 372                 if (!custom_mode){
 373                         if (runtime != null){
 374                                 // Nothing to do here, the user has chosen to manually specify --runtime nad libraries
 375                         } else if (sdk_path != null) {
 376                                 VerifySdk (sdk_path);
 377                         } else if (cross_target == "default" || cross_target == null){
 378                                 sdk_path = Path.GetFullPath (Path.Combine (Process.GetCurrentProcess().MainModule.FileName, "..", ".."));
 379                                 VerifySdk (sdk_path);
 380                         } else {
 381                                 sdk_path = Path.Combine (targets_dir, cross_target);
 382                                 Console.WriteLine ("From: " + sdk_path);
 383                                 VerifySdk (sdk_path);
 384                         }
 385                 }
 386
 387                 if (fetch_target != null){
 388                         var directory = Path.Combine (targets_dir, fetch_target);
 389                         var zip_download = Path.Combine (directory, "sdk.zip");
 390                         Directory.CreateDirectory (directory);
 391                         var wc = new WebClient ();
 392                         var uri = new Uri ($"{target_server}{fetch_target}");
 393                         try {
 394                                 if (!quiet){
 395                                         Console.WriteLine ($"Downloading runtime {uri} to {zip_download}");
 396                                 }
 397
 398                                 wc.DownloadFile (uri, zip_download);
 399                                 ZipFile.ExtractToDirectory(zip_download, directory);
 400                                 File.Delete (zip_download);
 401                         } catch {
 402                                 Console.Error.WriteLine ($"Failure to download the specified runtime from {uri}");
 403                                 File.Delete (zip_download);
 404                                 return 1;
 405                         }
 406                         return 0;
 407                 }
 408
 409                 if (!quiet) {
 410                         Console.WriteLine (os_message);
 411                         Console.WriteLine ("Sources: {0} Auto-dependencies: {1}", sources.Count, autodeps);
 412                 }
 413
 414                 if (sources.Count == 0 || output == null) {
 415                         Help ();
 416                         Environment.Exit (1);
 417                 }
 418
 419                 List<string> assemblies = LoadAssemblies (sources);
 420                 LoadLocalizedAssemblies (assemblies);
 421                 List<string> files = new List<string> ();
 422                 foreach (string file in assemblies)
 423                         if (!QueueAssembly (files, file))
 424                                 return 1;
 425                 if (aot_compile)
 426                         AotCompile (files);
 427                 if (custom_mode)
 428                         GenerateBundles (files);
 429                 else
 430                         GeneratePackage (files);
 431
 432                 Console.WriteLine ("Generated {0}", output);
 433
 434                 return 0;
 435         }
 436
 437         static void VerifySdk (string path)
 438         {
 439                 if (!Directory.Exists (path))
 440                         Error ($"The specified SDK path does not exist: {path}");
 441                 runtime = Path.Combine (sdk_path, "bin", "mono");
 442                 if (!File.Exists (runtime))
 443                         Error ($"The SDK location does not contain a {path}/bin/mono runtime");
 444                 lib_path = Path.Combine (path, "lib", "mono", "4.5");
 445                 if (!Directory.Exists (lib_path))
 446                         Error ($"The SDK location does not contain a {path}/lib/mono/4.5 directory");
 447                 link_paths.Add (lib_path);
 448         }
 449
 450         static string targets_dir = Path.Combine (Environment.GetFolderPath (Environment.SpecialFolder.Personal), ".mono", "targets");
 451
 452         static void CommandLocalTargets ()
 453         {
 454                 string [] targets;
 455
 456                 Console.WriteLine ("Available targets locally:");
 457                 Console.WriteLine ("\tdefault\t- Current System Mono");
 458                 try {
 459                         targets = Directory.GetDirectories (targets_dir);
 460                 } catch {
 461                         return;
 462                 }
 463                 foreach (var target in targets){
 464                         var p = Path.Combine (target, "bin", "mono");
 465                         if (File.Exists (p))
 466                                 Console.WriteLine ("\t{0}", Path.GetFileName (target));
 467                 }
 468         }
 469
 470         static void WriteSymbol (StreamWriter sw, string name, long size)
 471         {
 472                 switch (style){
 473                 case "linux":
 474                         sw.WriteLine (
 475                                 ".globl {0}\n" +
 476                                 "\t.section .rodata\n" +
 477                                 "\t.p2align 5\n" +
 478                                 "\t.type {0}, \"object\"\n" +
 479                                 "\t.size {0}, {1}\n" +
 480                                 "{0}:\n",
 481                                 name, size);
 482                         break;
 483                 case "osx":
 484                         sw.WriteLine (
 485                                 "\t.section __TEXT,__text,regular,pure_instructions\n" +
 486                                 "\t.globl _{0}\n" +
 487                                 "\t.data\n" +
 488                                 "\t.align 4\n" +
 489                                 "_{0}:\n",
 490                                 name, size);
 491                         break;
 492                 case "windows":
 493                         sw.WriteLine (
 494                                 ".globl _{0}\n" +
 495                                 "\t.section .rdata,\"dr\"\n" +
 496                                 "\t.align 32\n" +
 497                                 "_{0}:\n",
 498                                 name, size);
 499                         break;
 500                 }
 501         }
 502
 503         static string [] chars = new string [256];
 504
 505         static void WriteBuffer (StreamWriter ts, Stream stream, byte[] buffer)
 506         {
 507                 int n;
 508
 509                 // Preallocate the strings we need.
 510                 if (chars [0] == null) {
 511                         for (int i = 0; i < chars.Length; i++)
 512                                 chars [i] = string.Format ("{0}", i.ToString ());
 513                 }
 514
 515                 while ((n = stream.Read (buffer, 0, buffer.Length)) != 0) {
 516                         int count = 0;
 517                         for (int i = 0; i < n; i++) {
 518                                 if (count % 32 == 0) {
 519                                         ts.Write ("\n\t.byte ");
 520                                 } else {
 521                                         ts.Write (",");
 522                                 }
 523                                 ts.Write (chars [buffer [i]]);
 524                                 count ++;
 525                         }
 526                 }
 527
 528                 ts.WriteLine ();
 529         }
 530
 531         class PackageMaker {
 532                 Dictionary<string, Tuple<long,int>> locations = new Dictionary<string, Tuple<long,int>> ();
 533                 const int align = 4096;
 534                 Stream package;
 535
 536                 public PackageMaker (string output)
 537                 {
 538                         package = File.Create (output, 128*1024);
 539                         if (IsUnix){
 540                                 File.SetAttributes (output, unchecked ((FileAttributes) 0x80000000));
 541                         }
 542                 }
 543
 544                 public int AddFile (string fname)
 545                 {
 546                         using (Stream fileStream = File.OpenRead (fname)){
 547                                 var ret = fileStream.Length;
 548
 549                                 if (!quiet)
 550                                         Console.WriteLine ("At {0:x} with input {1}", package.Position, fileStream.Length);
 551                                 fileStream.CopyTo (package);
 552                                 package.Position = package.Position + (align - (package.Position % align));
 553                                 return (int) ret;
 554                         }
 555                 }
 556
 557                 public void Add (string entry, string fname)
 558                 {
 559                         var p = package.Position;
 560                         var size = AddFile (fname);
 561
 562                         locations [entry] = Tuple.Create(p, size);
 563                 }
 564
 565                 public void AddString (string entry, string text)
 566                 {
 567                         var bytes = Encoding.UTF8.GetBytes (text);
 568                         locations [entry] = Tuple.Create (package.Position, bytes.Length);
 569                         package.Write (bytes, 0, bytes.Length);
 570                         package.Position = package.Position + (align - (package.Position % align));
 571                 }
 572
 573                 public void AddStringPair (string entry, string key, string value)
 574                 {
 575                         var kbytes = Encoding.UTF8.GetBytes (key);
 576                         var vbytes = Encoding.UTF8.GetBytes (value);
 577
 578                         Console.WriteLine ("ADDING {0} to {1}", key, value);
 579                         if (kbytes.Length > 255){
 580                                 Console.WriteLine ("The key value can not exceed 255 characters: " + key);
 581                                 Environment.Exit (1);
 582                         }
 583
 584                         locations [entry] = Tuple.Create (package.Position, kbytes.Length+vbytes.Length+3);
 585                         package.WriteByte ((byte)kbytes.Length);
 586                         package.Write (kbytes, 0, kbytes.Length);
 587                         package.WriteByte (0);
 588                         package.Write (vbytes, 0, vbytes.Length);
 589                         package.WriteByte (0);
 590                         package.Position = package.Position + (align - (package.Position % align));
 591                 }
 592
 593                 public void Dump ()
 594                 {
 595                         if (quiet)
 596                                 return;
 597                         foreach (var floc in locations.Keys){
 598                                 Console.WriteLine ($"{floc} at {locations[floc]:x}");
 599                         }
 600                 }
 601
 602                 public void WriteIndex ()
 603                 {
 604                         var indexStart = package.Position;
 605                         var binary = new BinaryWriter (package);
 606
 607                         binary.Write (locations.Count);
 608                         foreach (var entry in from entry in locations orderby entry.Value.Item1 ascending select entry){
 609                                 var bytes = Encoding.UTF8.GetBytes (entry.Key);
 610                                 binary.Write (bytes.Length+1);
 611                                 binary.Write (bytes);
 612                                 binary.Write ((byte) 0);
 613                                 binary.Write (entry.Value.Item1);
 614                                 binary.Write (entry.Value.Item2);
 615                         }
 616                         binary.Write (indexStart);
 617                         binary.Write (Encoding.UTF8.GetBytes ("xmonkeysloveplay"));
 618                         binary.Flush ();
 619                 }
 620
 621                 public void Close ()
 622                 {
 623                         WriteIndex ();
 624                         package.Close ();
 625                         package = null;
 626                 }
 627         }
 628
 629         static bool MaybeAddFile (PackageMaker maker, string code, string file)
 630         {
 631                 if (file == null)
 632                         return true;
 633
 634                 if (!File.Exists (file)){
 635                         Error ("The file {0} does not exist", file);
 636                         return false;
 637                 }
 638                 maker.Add (code, file);
 639                 return true;
 640         }
 641
 642         static bool GeneratePackage (List<string> files)
 643         {
 644                 if (runtime == null){
 645                         if (IsUnix)
 646                                 runtime = Process.GetCurrentProcess().MainModule.FileName;
 647                         else {
 648                                 Error ("You must specify at least one runtime with --runtime or --cross");
 649                                 Environment.Exit (1);
 650                         }
 651                 }
 652                 if (!File.Exists (runtime)){
 653                         Error ($"The specified runtime at {runtime} does not exist");
 654                         Environment.Exit (1);
 655                 }
 656
 657                 if (ctor_func != null){
 658                         Error ("--static-ctor not supported with package bundling, you must use native compilation for this");
 659                         return false;
 660                 }
 661
 662                 var maker = new PackageMaker (output);
 663                 Console.WriteLine ("Using runtime: " + runtime);
 664                 maker.AddFile (runtime);
 665
 666                 foreach (var url in files){
 667                         string fname = LocateFile (new Uri (url).LocalPath);
 668                         string aname = MakeBundle.GetAssemblyName (fname);
 669
 670                         maker.Add ("assembly:" + aname, fname);
 671                         Console.WriteLine ("     Assembly: " + fname);
 672                         if (File.Exists (fname + ".config")){
 673                                 maker.Add ("config:" + aname, fname + ".config");
 674                                 Console.WriteLine ("       Config: " + runtime);
 675                         }
 676                 }
 677
 678                 if (!MaybeAddFile (maker, "systemconfig:", config_file) || !MaybeAddFile (maker, "machineconfig:", machine_config_file))
 679                         return false;
 680
 681                 if (config_dir != null)
 682                         maker.Add ("config_dir:", config_dir);
 683                 if (embedded_options != null)
 684                         maker.AddString ("options:", embedded_options);
 685                 if (environment.Count > 0){
 686                         foreach (var key in environment.Keys)
 687                                 maker.AddStringPair ("env:" + key, key, environment [key]);
 688                 }
 689                 if (libraries.Count > 0){
 690                         foreach (var alias_and_path in libraries){
 691                                 Console.WriteLine ("     Library:  " + alias_and_path.Value);
 692                                 maker.Add ("library:" + alias_and_path.Key, alias_and_path.Value);
 693                         }
 694                 }
 695                 maker.Dump ();
 696                 maker.Close ();
 697                 return true;
 698         }
 699
 700         static void GenerateBundles (List<string> files)
 701         {
 702                 string temp_s = "temp.s"; // Path.GetTempFileName ();
 703                 string temp_c = "temp.c";
 704                 string temp_o = "temp.o";
 705
 706                 if (compile_only)
 707                         temp_c = output;
 708                 if (object_out != null)
 709                         temp_o = object_out;
 710
 711                 try {
 712                         List<string> c_bundle_names = new List<string> ();
 713                         List<string[]> config_names = new List<string[]> ();
 714
 715                         using (StreamWriter ts = new StreamWriter (File.Create (temp_s))) {
 716                         using (StreamWriter tc = new StreamWriter (File.Create (temp_c))) {
 717                         string prog = null;
 718
 719                         if (bundled_header) {
 720                                 tc.WriteLine ("/* This source code was produced by mkbundle, do not edit */");
 721                                 tc.WriteLine ("\n#ifndef NULL\n#define NULL (void *)0\n#endif");
 722                                 tc.WriteLine (@"
 723 typedef struct {
 724         const char *name;
 725         const unsigned char *data;
 726         const unsigned int size;
 727 } MonoBundledAssembly;
 728 void          mono_register_bundled_assemblies (const MonoBundledAssembly **assemblies);
 729 void          mono_register_config_for_assembly (const char* assembly_name, const char* config_xml);
 730 ");
 731                         } else {
 732                                 tc.WriteLine ("#include <mono/metadata/mono-config.h>");
 733                                 tc.WriteLine ("#include <mono/metadata/assembly.h>\n");
 734                         }
 735
 736                         if (compress) {
 737                                 tc.WriteLine ("typedef struct _compressed_data {");
 738                                 tc.WriteLine ("\tMonoBundledAssembly assembly;");
 739                                 tc.WriteLine ("\tint compressed_size;");
 740                                 tc.WriteLine ("} CompressedAssembly;\n");
 741                         }
 742
 743                         object monitor = new object ();
 744
 745                         var streams = new Dictionary<string, Stream> ();
 746                         var sizes = new Dictionary<string, long> ();
 747
 748                         // Do the file reading and compression in parallel
 749                         Action<string> body = delegate (string url) {
 750                                 string fname = LocateFile (new Uri (url).LocalPath);
 751                                 Stream stream = File.OpenRead (fname);
 752
 753                                 long real_size = stream.Length;
 754                                 int n;
 755                                 if (compress) {
 756                                         byte[] cbuffer = new byte [8192];
 757                                         MemoryStream ms = new MemoryStream ();
 758                                         GZipStream deflate = new GZipStream (ms, CompressionMode.Compress, leaveOpen:true);
 759                                         while ((n = stream.Read (cbuffer, 0, cbuffer.Length)) != 0){
 760                                                 deflate.Write (cbuffer, 0, n);
 761                                         }
 762                                         stream.Close ();
 763                                         deflate.Close ();
 764                                         byte [] bytes = ms.GetBuffer ();
 765                                         stream = new MemoryStream (bytes, 0, (int) ms.Length, false, false);
 766                                 }
 767
 768                                 lock (monitor) {
 769                                         streams [url] = stream;
 770                                         sizes [url] = real_size;
 771                                 }
 772                         };
 773
 774                         //#if NET_4_5
 775 #if FALSE
 776                         Parallel.ForEach (files, body);
 777 #else
 778                         foreach (var url in files)
 779                                 body (url);
 780 #endif
 781
 782                         // The non-parallel part
 783                         byte [] buffer = new byte [8192];
 784                         // everything other than a-zA-Z0-9_ needs to be escaped in asm symbols.
 785                         var symbolEscapeRE = new System.Text.RegularExpressions.Regex ("[^\\w_]");
 786                         foreach (var url in files) {
 787                                 string fname = LocateFile (new Uri (url).LocalPath);
 788                                 string aname = MakeBundle.GetAssemblyName (fname);
 789                                 string encoded = symbolEscapeRE.Replace (aname, "_");
 790
 791                                 if (prog == null)
 792                                         prog = aname;
 793
 794                                 var stream = streams [url];
 795                                 var real_size = sizes [url];
 796
 797                                 if (!quiet)
 798                                         Console.WriteLine ("   embedding: " + fname);
 799
 800                                 WriteSymbol (ts, "assembly_data_" + encoded, stream.Length);
 801
 802                                 WriteBuffer (ts, stream, buffer);
 803
 804                                 if (compress) {
 805                                         tc.WriteLine ("extern const unsigned char assembly_data_{0} [];", encoded);
 806                                         tc.WriteLine ("static CompressedAssembly assembly_bundle_{0} = {{{{\"{1}\"," +
 807                                                                   " assembly_data_{0}, {2}}}, {3}}};",
 808                                                                   encoded, aname, real_size, stream.Length);
 809                                         if (!quiet) {
 810                                                 double ratio = ((double) stream.Length * 100) / real_size;
 811                                                 Console.WriteLine ("   compression ratio: {0:.00}%", ratio);
 812                                         }
 813                                 } else {
 814                                         tc.WriteLine ("extern const unsigned char assembly_data_{0} [];", encoded);
 815                                         tc.WriteLine ("static const MonoBundledAssembly assembly_bundle_{0} = {{\"{1}\", assembly_data_{0}, {2}}};",
 816                                                                   encoded, aname, real_size);
 817                                 }
 818                                 stream.Close ();
 819
 820                                 c_bundle_names.Add ("assembly_bundle_" + encoded);
 821
 822                                 try {
 823                                         FileStream cf = File.OpenRead (fname + ".config");
 824                                         if (!quiet)
 825                                                 Console.WriteLine (" config from: " + fname + ".config");
 826                                         tc.WriteLine ("extern const unsigned char assembly_config_{0} [];", encoded);
 827                                         WriteSymbol (ts, "assembly_config_" + encoded, cf.Length);
 828                                         WriteBuffer (ts, cf, buffer);
 829                                         ts.WriteLine ();
 830                                         config_names.Add (new string[] {aname, encoded});
 831                                 } catch (FileNotFoundException) {
 832                                         /* we ignore if the config file doesn't exist */
 833                                 }
 834                         }
 835
 836                         if (aot_compile) {
 837                                 // Read in static AOT file
 838                         }
 839
 840                         if (config_file != null){
 841                                 FileStream conf;
 842                                 try {
 843                                         conf = File.OpenRead (config_file);
 844                                 } catch {
 845                                         Error ("Failure to open {0}", config_file);
 846                                         return;
 847                                 }
 848                                 if (!quiet)
 849                                         Console.WriteLine ("System config from: " + config_file);
 850                                 tc.WriteLine ("extern const char system_config;");
 851                                 WriteSymbol (ts, "system_config", config_file.Length);
 852
 853                                 WriteBuffer (ts, conf, buffer);
 854                                 // null terminator
 855                                 ts.Write ("\t.byte 0\n");
 856                                 ts.WriteLine ();
 857                         }
 858
 859                         if (machine_config_file != null){
 860                                 FileStream conf;
 861                                 try {
 862                                         conf = File.OpenRead (machine_config_file);
 863                                 } catch {
 864                                         Error ("Failure to open {0}", machine_config_file);
 865                                         return;
 866                                 }
 867                                 if (!quiet)
 868                                         Console.WriteLine ("Machine config from: " + machine_config_file);
 869                                 tc.WriteLine ("extern const char machine_config;");
 870                                 WriteSymbol (ts, "machine_config", machine_config_file.Length);
 871
 872                                 WriteBuffer (ts, conf, buffer);
 873                                 ts.Write ("\t.byte 0\n");
 874                                 ts.WriteLine ();
 875                         }
 876                         ts.Close ();
 877
 878                         if (compress)
 879                                 tc.WriteLine ("\nstatic const CompressedAssembly *compressed [] = {");
 880                         else
 881                                 tc.WriteLine ("\nstatic const MonoBundledAssembly *bundled [] = {");
 882
 883                         foreach (string c in c_bundle_names){
 884                                 tc.WriteLine ("\t&{0},", c);
 885                         }
 886                         tc.WriteLine ("\tNULL\n};\n");
 887                         tc.WriteLine ("static char *image_name = \"{0}\";", prog);
 888
 889                         if (ctor_func != null) {
 890                                 tc.WriteLine ("\nextern void {0} (void);", ctor_func);
 891                                 tc.WriteLine ("\n__attribute__ ((constructor)) static void mono_mkbundle_ctor (void)");
 892                                 tc.WriteLine ("{{\n\t{0} ();\n}}", ctor_func);
 893                         }
 894
 895                         tc.WriteLine ("\nstatic void install_dll_config_files (void) {\n");
 896                         foreach (string[] ass in config_names){
 897                                 tc.WriteLine ("\tmono_register_config_for_assembly (\"{0}\", assembly_config_{1});\n", ass [0], ass [1]);
 898                         }
 899                         if (config_file != null)
 900                                 tc.WriteLine ("\tmono_config_parse_memory (&system_config);\n");
 901                         if (machine_config_file != null)
 902                                 tc.WriteLine ("\tmono_register_machine_config (&machine_config);\n");
 903                         tc.WriteLine ("}\n");
 904
 905                         if (config_dir != null)
 906                                 tc.WriteLine ("static const char *config_dir = \"{0}\";", config_dir);
 907                         else
 908                                 tc.WriteLine ("static const char *config_dir = NULL;");
 909
 910                         Stream template_stream;
 911                         if (compress) {
 912                                 template_stream = System.Reflection.Assembly.GetAssembly (typeof(MakeBundle)).GetManifestResourceStream ("template_z.c");
 913                         } else {
 914                                 template_stream = System.Reflection.Assembly.GetAssembly (typeof(MakeBundle)).GetManifestResourceStream ("template.c");
 915                         }
 916
 917                         StreamReader s = new StreamReader (template_stream);
 918                         string template = s.ReadToEnd ();
 919                         tc.Write (template);
 920
 921                         if (!nomain && custom_main == null) {
 922                                 Stream template_main_stream = System.Reflection.Assembly.GetAssembly (typeof(MakeBundle)).GetManifestResourceStream ("template_main.c");
 923                                 StreamReader st = new StreamReader (template_main_stream);
 924                                 string maintemplate = st.ReadToEnd ();
 925                                 tc.Write (maintemplate);
 926                         }
 927
 928                         tc.Close ();
 929
 930                         string assembler = GetEnv("AS", "as");
 931                         string as_cmd = String.Format("{0} -o {1} {2} ", assembler, temp_o, temp_s);
 932                         Execute(as_cmd);
 933
 934                         if (compile_only)
 935                                 return;
 936
 937                         if (!quiet)
 938                                 Console.WriteLine("Compiling:");
 939
 940                         if (style == "windows")
 941                         {
 942
 943                                 Func<string, string> quote = (pp) => { return "\"" + pp + "\""; };
 944
 945                                 string compiler = GetEnv("CC", "cl.exe");
 946                                 string winsdkPath = GetEnv("WINSDK", @"C:\Program Files (x86)\Windows Kits\8.1");
 947                                 string vsPath = GetEnv("VSINCLUDE", @"C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC");
 948                                 string monoPath = GetEnv("MONOPREFIX", @"C:\Program Files (x86)\Mono");
 949
 950                                 string[] includes = new string[] {winsdkPath + @"\Include\um", winsdkPath + @"\Include\shared", vsPath + @"\include", monoPath + @"\include\mono-2.0", "." };
 951                                 // string[] libs = new string[] { winsdkPath + @"\Lib\winv6.3\um\x86" , vsPath + @"\lib" };
 952                                 var linkLibraries = new string[] {  "kernel32.lib",
 953                                                                                                 "version.lib",
 954                                                                                                 "Ws2_32.lib",
 955                                                                                                 "Mswsock.lib",
 956                                                                                                 "Psapi.lib",
 957                                                                                                 "shell32.lib",
 958                                                                                                 "OleAut32.lib",
 959                                                                                                 "ole32.lib",
 960                                                                                                 "winmm.lib",
 961                                                                                                 "user32.lib",
 962                                                                                                 "libvcruntime.lib",
 963                                                                                                 "advapi32.lib",
 964                                                                                                 "OLDNAMES.lib",
 965                                                                                                 "libucrt.lib" };
 966
 967                                 string glue_obj = "mkbundle_glue.obj";
 968                                 string monoLib;
 969
 970                                 if (static_link)
 971                                         monoLib = LocateFile (monoPath + @"\lib\monosgen-2.0-static.lib");
 972
 973                                 else {
 974                                         Console.WriteLine ("WARNING: Dynamically linking the Mono runtime on Windows is not a tested option.");
 975                                         monoLib = LocateFile (monoPath + @"\lib\monosgen-2.0.lib");
 976                                         LocateFile (monoPath + @"\lib\monosgen-2.0.dll"); // in this case, the .lib is just the import library, and the .dll is also needed
 977                                 }
 978
 979                                 var compilerArgs = new List<string>();
 980                                 compilerArgs.Add("/MT");
 981
 982                                 foreach (string include in includes)
 983                                         compilerArgs.Add(String.Format ("/I {0}", quote (include)));
 984
 985                                 if (!nomain || custom_main != null) {
 986                                         compilerArgs.Add(quote(temp_c));
 987                                         compilerArgs.Add(quote(temp_o));
 988                                         if (custom_main != null)
 989                                                 compilerArgs.Add(quote(custom_main));
 990                                         compilerArgs.Add(quote(monoLib));
 991                                         compilerArgs.Add("/link");
 992                                         compilerArgs.Add("/NODEFAULTLIB");
 993                                         compilerArgs.Add("/SUBSYSTEM:windows");
 994                                         compilerArgs.Add("/ENTRY:mainCRTStartup");
 995                                         compilerArgs.AddRange(linkLibraries);
 996                                         compilerArgs.Add("/out:"+ output);
 997
 998                                         string cl_cmd = String.Format("{0} {1}", compiler, String.Join(" ", compilerArgs.ToArray()));
 999                                         Execute (cl_cmd);
1000                                 }
1001                                 else
1002                                 {
1003                                         // we are just creating a .lib
1004                                         compilerArgs.Add("/c"); // compile only
1005                                         compilerArgs.Add(temp_c);
1006                                         compilerArgs.Add(String.Format("/Fo" + glue_obj)); // .obj output name
1007
1008                                         string cl_cmd = String.Format("{0} {1}", compiler, String.Join(" ", compilerArgs.ToArray()));
1009                                         Execute (cl_cmd);
1010
1011                                         string librarian = GetEnv ("LIB", "lib.exe");
1012                                         var librarianArgs = new List<string> ();
1013                                         librarianArgs.Add (String.Format ("/out:{0}.lib" + output));
1014                                         librarianArgs.Add (temp_o);
1015                                         librarianArgs.Add (glue_obj);
1016                                         librarianArgs.Add (monoLib);
1017                                         string lib_cmd = String.Format("{0} {1}", librarian, String.Join(" ", librarianArgs.ToArray()));
1018                                         Execute (lib_cmd);
1019                                 }
1020                         }
1021                         else
1022                         {
1023                                 string zlib = (compress ? "-lz" : "");
1024                                 string debugging = "-g";
1025                                 string cc = GetEnv("CC", "cc");
1026                                 string cmd = null;
1027
1028                                 if (style == "linux")
1029                                         debugging = "-ggdb";
1030                                 if (static_link)
1031                                 {
1032                                         string smonolib;
1033                                         if (style == "osx")
1034                                                 smonolib = "`pkg-config --variable=libdir mono-2`/libmono-2.0.a ";
1035                                         else
1036                                                 smonolib = "-Wl,-Bstatic -lmono-2.0 -Wl,-Bdynamic ";
1037                                         cmd = String.Format("{4} -o '{2}' -Wall `pkg-config --cflags mono-2` {0} {3} " +
1038                                                 "`pkg-config --libs-only-L mono-2` " + smonolib +
1039                                                 "`pkg-config --libs-only-l mono-2 | sed -e \"s/\\-lmono-2.0 //\"` {1}",
1040                                                 temp_c, temp_o, output, zlib, cc);
1041                                 }
1042                                 else
1043                                 {
1044
1045                                         cmd = String.Format("{4} " + debugging + " -o '{2}' -Wall {0} `pkg-config --cflags --libs mono-2` {3} {1}",
1046                                                 temp_c, temp_o, output, zlib, cc);
1047                                 }
1048                                 Execute (cmd);
1049                         }
1050
1051                         if (!quiet)
1052                                 Console.WriteLine ("Done");
1053                 }
1054         }
1055                 } finally {
1056                         if (!keeptemp){
1057                                 if (object_out == null){
1058                                         File.Delete (temp_o);
1059                                 }
1060                                 if (!compile_only){
1061                                         File.Delete (temp_c);
1062                                 }
1063                                 File.Delete (temp_s);
1064                         }
1065                 }
1066         }
1067
1068         static List<string> LoadAssemblies (List<string> sources)
1069         {
1070                 List<string> assemblies = new List<string> ();
1071                 bool error = false;
1072
1073                 foreach (string name in sources){
1074                         try {
1075                                 Assembly a = LoadAssemblyFile (name);
1076
1077                                 if (a == null){
1078                                         error = true;
1079                                         continue;
1080                                 }
1081
1082                                 assemblies.Add (a.CodeBase);
1083                         } catch (Exception) {
1084                                 if (skip_scan) {
1085                                         if (!quiet)
1086                                                 Console.WriteLine ("File will not be scanned: {0}", name);
1087                                         assemblies.Add (new Uri (new FileInfo (name).FullName).ToString ());
1088                                 } else {
1089                                         throw;
1090                                 }
1091                         }
1092                 }
1093
1094                 if (error) {
1095                         Error ("Couldn't load one or more of the assemblies.");
1096                         Environment.Exit (1);
1097                 }
1098
1099                 return assemblies;
1100         }
1101
1102         static void LoadLocalizedAssemblies (List<string> assemblies)
1103         {
1104                 var other = i18n.Select (x => "I18N." + x + (x.Length > 0 ? "." : "") + "dll");
1105                 string error = null;
1106
1107                 foreach (string name in other) {
1108                         try {
1109                                 Assembly a = LoadAssembly (name);
1110
1111                                 if (a == null) {
1112                                         error = "Failed to load " + name;
1113                                         continue;
1114                                 }
1115
1116                                 assemblies.Add (a.CodeBase);
1117                         } catch (Exception) {
1118                                 if (skip_scan) {
1119                                         if (!quiet)
1120                                                 Console.WriteLine ("File will not be scanned: {0}", name);
1121                                         assemblies.Add (new Uri (new FileInfo (name).FullName).ToString ());
1122                                 } else {
1123                                         throw;
1124                                 }
1125                         }
1126                 }
1127
1128                 if (error != null) {
1129                         Console.Error.WriteLine ("Failure to load i18n assemblies, the following directories were searched for the assemblies:");
1130                         foreach (var path in link_paths){
1131                                 Console.Error.WriteLine ("   Path: " + path);
1132                         }
1133                         if (custom_mode){
1134                                 Console.WriteLine ("In Custom mode, you need to provide the directory to lookup assemblies from using -L");
1135                         }
1136
1137                         Error ("Couldn't load one or more of the i18n assemblies: " + error);
1138                         Environment.Exit (1);
1139                 }
1140         }
1141
1142
1143         static readonly Universe universe = new Universe ();
1144         static readonly Dictionary<string, string> loaded_assemblies = new Dictionary<string, string> ();
1145
1146         public static string GetAssemblyName (string path)
1147         {
1148                 string resourcePathSeparator = style == "windows" ? "\\\\" : "/";
1149                 string name = Path.GetFileName (path);
1150
1151                 // A bit of a hack to support satellite assemblies. They all share the same name but
1152                 // are placed in subdirectories named after the locale they implement. Also, all of
1153                 // them end in .resources.dll, therefore we can use that to detect the circumstances.
1154                 if (name.EndsWith (".resources.dll", StringComparison.OrdinalIgnoreCase)) {
1155                         string dir = Path.GetDirectoryName (path);
1156                         int idx = dir.LastIndexOf (Path.DirectorySeparatorChar);
1157                         if (idx >= 0) {
1158                                 name = dir.Substring (idx + 1) + resourcePathSeparator + name;
1159                                 Console.WriteLine ($"Storing satellite assembly '{path}' with name '{name}'");
1160                         } else if (!quiet)
1161                                 Console.WriteLine ($"Warning: satellite assembly {path} doesn't have locale path prefix, name conflicts possible");
1162                 }
1163
1164                 return name;
1165         }
1166
1167         static bool QueueAssembly (List<string> files, string codebase)
1168         {
1169                 //Console.WriteLine ("CODE BASE IS {0}", codebase);
1170                 if (files.Contains (codebase))
1171                         return true;
1172
1173                 var path = new Uri(codebase).LocalPath;
1174                 var name = GetAssemblyName (path);
1175                 string found;
1176                 if (loaded_assemblies.TryGetValue (name, out found)) {
1177                         Error ("Duplicate assembly name `{0}'. Both `{1}' and `{2}' use same assembly name.", name, path, found);
1178                         return false;
1179                 }
1180
1181                 loaded_assemblies.Add (name, path);
1182
1183                 files.Add (codebase);
1184                 if (!autodeps)
1185                         return true;
1186                 try {
1187                         Assembly a = universe.LoadFile (path);
1188                         if (a == null) {
1189                                 Error ("Unable to to load assembly `{0}'", path);
1190                                 return false;
1191                         }
1192
1193                         foreach (AssemblyName an in a.GetReferencedAssemblies ()) {
1194                                 a = LoadAssembly (an.Name);
1195                                 if (a == null) {
1196                                         Error ("Unable to load assembly `{0}' referenced by `{1}'", an.Name, path);
1197                                         return false;
1198                                 }
1199
1200                                 if (!QueueAssembly (files, a.CodeBase))
1201                                         return false;
1202                         }
1203                 } catch (Exception) {
1204                         if (!skip_scan)
1205                                 throw;
1206                 }
1207
1208                 return true;
1209         }
1210
1211         //
1212         // Loads an assembly from a specific path
1213         //
1214         static Assembly LoadAssemblyFile (string assembly)
1215         {
1216                 Assembly a = null;
1217
1218                 try {
1219                         if (!quiet)
1220                                 Console.WriteLine ("Attempting to load assembly: {0}", assembly);
1221                         a = universe.LoadFile (assembly);
1222                         if (!quiet)
1223                                 Console.WriteLine ("Assembly {0} loaded successfully.", assembly);
1224
1225                 } catch (FileNotFoundException){
1226                         Error ($"Cannot find assembly `{assembly}'");
1227                 } catch (IKVM.Reflection.BadImageFormatException f) {
1228                         if (skip_scan)
1229                                 throw;
1230                         Error ($"Cannot load assembly (bad file format) " + f.Message);
1231                 } catch (FileLoadException f){
1232                         Error ($"Cannot load assembly " + f.Message);
1233                 } catch (ArgumentNullException){
1234                         Error( $"Cannot load assembly (null argument)");
1235                 }
1236                 return a;
1237         }
1238
1239         //
1240         // Loads an assembly from any of the link directories provided
1241         //
1242         static Assembly LoadAssembly (string assembly)
1243         {
1244                 string total_log = "";
1245                 foreach (string dir in link_paths){
1246                         string full_path = Path.Combine (dir, assembly);
1247                         if (!quiet)
1248                                 Console.WriteLine ("Attempting to load assembly from: " + full_path);
1249                         if (!assembly.EndsWith (".dll") && !assembly.EndsWith (".exe"))
1250                                 full_path += ".dll";
1251
1252                         try {
1253                                 var a = universe.LoadFile (full_path);
1254                                 return a;
1255                         } catch (FileNotFoundException ff) {
1256                                 total_log += ff.FusionLog;
1257                                 continue;
1258                         }
1259                 }
1260                 if (!quiet)
1261                         Console.WriteLine ("Log: \n" + total_log);
1262                 return null;
1263         }
1264
1265         static void Error (string msg, params object [] args)
1266         {
1267                 Console.Error.WriteLine ("ERROR: {0}", string.Format (msg, args));
1268                 Environment.Exit (1);
1269         }
1270
1271         static void Help ()
1272         {
1273                 Console.WriteLine ("Usage is: mkbundle [options] assembly1 [assembly2...]\n\n" +
1274                                    "Options:\n" +
1275                                    "    --config F           Bundle system config file `F'\n" +
1276                                    "    --config-dir D       Set MONO_CFG_DIR to `D'\n" +
1277                                    "    --deps               Turns on automatic dependency embedding (default on simple)\n" +
1278                                    "    -L path              Adds `path' to the search path for assemblies\n" +
1279                                    "    --machine-config F   Use the given file as the machine.config for the application.\n" +
1280                                    "    -o out               Specifies output filename\n" +
1281                                    "    --nodeps             Turns off automatic dependency embedding (default on custom)\n" +
1282                                    "    --skip-scan          Skip scanning assemblies that could not be loaded (but still embed them).\n" +
1283                                    "    --i18n ENCODING      none, all or comma separated list of CJK, MidWest, Other, Rare, West.\n" +
1284                                    "    -v                   Verbose output\n" +
1285                                    "    --bundled-header     Do not attempt to include 'mono-config.h'. Define the entry points directly in the generated code\n" +
1286                                    "\n" +
1287                                    "--simple   Simple mode does not require a C toolchain and can cross compile\n" +
1288                                    "    --cross TARGET       Generates a binary for the given TARGET\n"+
1289                                    "    --env KEY=VALUE      Hardcodes an environment variable for the target\n" +
1290                                    "    --fetch-target NAME  Downloads the target SDK from the remote server\n" +
1291                                    "    --library [LIB,]PATH Bundles the specified dynamic library to be used at runtime\n" +
1292                                    "                         LIB is optional shortname for file located at PATH\n" +
1293                                    "    --list-targets       Lists available targets on the remote server\n" +
1294                                    "    --local-targets      Lists locally available targets\n" +
1295                                    "    --options OPTIONS    Embed the specified Mono command line options on target\n" +
1296                                    "    --runtime RUNTIME    Manually specifies the Mono runtime to use\n" +
1297                                    "    --sdk PATH           Use a Mono SDK root location instead of a target\n" +
1298                                    "    --target-server URL  Specified a server to download targets from, default is " + target_server + "\n" +
1299                                    "\n" +
1300                                    "--custom   Builds a custom launcher, options for --custom\n" +
1301                                    "    -c                   Produce stub only, do not compile\n" +
1302                                    "    -oo obj              Specifies output filename for helper object file\n" +
1303                                    "    --dos2unix[=true|false]\n" +
1304                                    "                         When no value provided, or when `true` specified\n" +
1305                                    "                         `dos2unix` will be invoked to convert paths on Windows.\n" +
1306                                    "                         When `--dos2unix=false` used, dos2unix is NEVER used.\n" +
1307                                    "    --keeptemp           Keeps the temporary files\n" +
1308                                    "    --static             Statically link to mono libs\n" +
1309                                    "    --nomain             Don't include a main() function, for libraries\n" +
1310                                    "    --custom-main C      Link the specified compilation unit (.c or .obj) with entry point/init code\n" +
1311                                    "    -z                   Compress the assemblies before embedding.\n" +
1312                                    "    --static-ctor ctor   Add a constructor call to the supplied function.\n" +
1313                                    "                         You need zlib development headers and libraries.\n");
1314         }
1315
1316         [DllImport ("libc")]
1317         static extern int system (string s);
1318         [DllImport ("libc")]
1319         static extern int uname (IntPtr buf);
1320
1321         static void DetectOS ()
1322         {
1323                 if (!IsUnix) {
1324                         os_message = "OS is: Windows";
1325                         style = "windows";
1326                         return;
1327                 }
1328
1329                 IntPtr buf = Marshal.AllocHGlobal (8192);
1330                 if (uname (buf) != 0){
1331                         os_message = "Warning: Unable to detect OS";
1332                         Marshal.FreeHGlobal (buf);
1333                         return;
1334                 }
1335                 string os = Marshal.PtrToStringAnsi (buf);
1336                 os_message = "OS is: " + os;
1337                 if (os == "Darwin")
1338                         style = "osx";
1339
1340                 Marshal.FreeHGlobal (buf);
1341         }
1342
1343         static bool IsUnix {
1344                 get {
1345                         int p = (int) Environment.OSVersion.Platform;
1346                         return ((p == 4) || (p == 128) || (p == 6));
1347                 }
1348         }
1349
1350         static void AotCompile (List<string> files)
1351         {
1352                 foreach (var fileName in files) {
1353                         string path = LocateFile (new Uri (fileName).LocalPath);
1354                         Execute (String.Format ("{0} --aot={1} {2}", runtime, aot_args, path));
1355                 }
1356         }
1357
1358         static void Execute (string cmdLine)
1359         {
1360                 if (IsUnix) {
1361                         if (!quiet)
1362                                 Console.WriteLine ("[execute cmd]: " + cmdLine);
1363                         int ret = system (cmdLine);
1364                         if (ret != 0)
1365                         {
1366                                 Error(String.Format("[Fail] {0}", ret));
1367                         }
1368                         return;
1369                 }
1370
1371                 // on Windows, we have to pipe the output of a
1372                 // `cmd` interpolation to dos2unix, because the shell does not
1373                 // strip the CRLFs generated by the native pkg-config distributed
1374                 // with Mono.
1375                 //
1376                 // But if it's *not* on cygwin, just skip it.
1377
1378                 // check if dos2unix is applicable.
1379                 if (use_dos2unix == true)
1380                         try {
1381                         var info = new ProcessStartInfo ("dos2unix");
1382                         info.CreateNoWindow = true;
1383                         info.RedirectStandardInput = true;
1384                         info.UseShellExecute = false;
1385                         var dos2unix = Process.Start (info);
1386                         dos2unix.StandardInput.WriteLine ("aaa");
1387                         dos2unix.StandardInput.WriteLine ("\u0004");
1388                         dos2unix.StandardInput.Close ();
1389                         dos2unix.WaitForExit ();
1390                         if (dos2unix.ExitCode == 0)
1391                                 use_dos2unix = true;
1392                 } catch {
1393                         Console.WriteLine("Warning: dos2unix not found");
1394                         use_dos2unix = false;
1395                 }
1396
1397                 if (use_dos2unix == null)
1398                         use_dos2unix = false;
1399
1400                 ProcessStartInfo psi = new ProcessStartInfo();
1401                 psi.UseShellExecute = false;
1402
1403                 // if there is no dos2unix, just run cmd /c.
1404                 if (use_dos2unix == false)
1405                 {
1406                         psi.FileName = "cmd";
1407                         psi.Arguments = String.Format("/c \"{0}\"", cmdLine);
1408                 }
1409                 else
1410                 {
1411                         psi.FileName = "sh";
1412                         StringBuilder b = new StringBuilder();
1413                         int count = 0;
1414                         for (int i = 0; i < cmdLine.Length; i++)
1415                         {
1416                                 if (cmdLine[i] == '`')
1417                                 {
1418                                         if (count % 2 != 0)
1419                                         {
1420                                                 b.Append("|dos2unix");
1421                                         }
1422                                         count++;
1423                                 }
1424                                 b.Append(cmdLine[i]);
1425                         }
1426                         cmdLine = b.ToString();
1427                         psi.Arguments = String.Format("-c \"{0}\"", cmdLine);
1428                 }
1429
1430                 if (!quiet)
1431                         Console.WriteLine(cmdLine);
1432                 using (Process p = Process.Start (psi)) {
1433                         p.WaitForExit ();
1434                         int ret = p.ExitCode;
1435                         if (ret != 0){
1436                                 Error ("[Fail] {0}", ret);
1437                         }
1438                 }
1439         }
1440
1441         static string GetEnv(string name, string defaultValue)
1442         {
1443                 string val = Environment.GetEnvironmentVariable(name);
1444                 if (val != null)
1445                 {
1446                         if (!quiet)
1447                                 Console.WriteLine("{0} = {1}", name, val);
1448                 }
1449                 else
1450                 {
1451                         val = defaultValue;
1452                         if (!quiet)
1453                                 Console.WriteLine("{0} = {1} (default)", name, val);
1454                 }
1455                 return val;
1456         }
1457
1458         static string LocateFile(string default_path)
1459         {
1460                 var override_path = Path.Combine(Directory.GetCurrentDirectory(), Path.GetFileName(default_path));
1461                 if (File.Exists(override_path))
1462                         return override_path;
1463                 else if (File.Exists(default_path))
1464                         return default_path;
1465                 else
1466                         throw new FileNotFoundException(default_path);
1467         }
1468 }