source/builder.cpp

   1 /* $Id$
   2
   3 This file is part of builder
   4 Copyright © 2006-2010  Mikko Rasa, Mikkosoft Productions
   5 Distributed under the LGPL
   6 */
   7
   8 #include <set>
   9 #include <cstdlib>
  10 #include <msp/core/except.h>
  11 #include <msp/core/getopt.h>
  12 #include <msp/datafile/parser.h>
  13 #include <msp/fs/dir.h>
  14 #include <msp/fs/stat.h>
  15 #include <msp/fs/utils.h>
  16 #include <msp/io/buffered.h>
  17 #include <msp/io/except.h>
  18 #include <msp/io/file.h>
  19 #include <msp/io/print.h>
  20 #include <msp/strings/formatter.h>
  21 #include <msp/strings/regex.h>
  22 #include <msp/strings/utils.h>
  23 #include <msp/time/units.h>
  24 #include <msp/time/utils.h>
  25 #include "action.h"
  26 #include "analyzer.h"
  27 #include "binarypackage.h"
  28 #include "builder.h"
  29 #include "header.h"
  30 #include "install.h"
  31 #include "misc.h"
  32 #include "package.h"
  33 #include "pkgconfig.h"
  34 #include "sharedlibrary.h"
  35 #include "sourcepackage.h"
  36 #include "systemlibrary.h"
  37 #include "unlink.h"
  38 #include "virtualtarget.h"
  39
  40 using namespace std;
  41 using namespace Msp;
  42
  43 namespace {
  44
  45 void update_hash(string &hash, const string &value)
  46 {
  47         for(unsigned i=0; i<value.size(); ++i)
  48                 hash[i%hash.size()] ^= value[i];
  49 }
  50
  51 }
  52
  53
  54 Builder::Builder(int argc, char **argv):
  55         main_pkg(0),
  56         native_arch(*this, string()),
  57         analyzer(0),
  58         build(false),
  59         clean(0),
  60         dry_run(false),
  61         help(false),
  62         verbose(1),
  63         show_progress(false),
  64         build_file("Build"),
  65         jobs(1),
  66         conf_all(false),
  67         conf_only(false),
  68         build_all(false),
  69         create_makefile(false)
  70 {
  71         string analyze_mode;
  72         string work_dir;
  73         bool full_paths = false;
  74         unsigned max_depth = 5;
  75         StringList cmdline_warn;
  76         string prfx;
  77         string arch;
  78
  79         GetOpt getopt;
  80         getopt.add_option('a', "analyze",    analyze_mode,  GetOpt::REQUIRED_ARG).set_help("Perform analysis.  MODE can be deps, alldeps or rebuild.", "MODE");
  81         getopt.add_option('b', "build",      build,         GetOpt::NO_ARG).set_help("Perform build even if doing analysis.");
  82         getopt.add_option('c', "clean",      clean,         GetOpt::NO_ARG).set_help("Clean buildable targets.");
  83         getopt.add_option('f', "file",       build_file,    GetOpt::REQUIRED_ARG).set_help("Read info from FILE instead of Build.", "FILE");
  84         getopt.add_option('h', "help",       help,          GetOpt::NO_ARG).set_help("Print this message.");
  85         getopt.add_option('j', "jobs",       jobs,          GetOpt::REQUIRED_ARG).set_help("Run NUM commands at once, whenever possible.", "NUM");
  86         getopt.add_option('n', "dry-run",    dry_run,       GetOpt::NO_ARG).set_help("Don't actually do anything, only show what would be done.");
  87         getopt.add_option('v', "verbose",    verbose,       GetOpt::NO_ARG).set_help("Print more information about what's going on.");
  88         getopt.add_option('x', "no-externals",  no_externals, GetOpt::NO_ARG).set_help("Do not load external source packages.");
  89         getopt.add_option('A', "conf-all",   conf_all,      GetOpt::NO_ARG).set_help("Apply configuration to all packages.");
  90         getopt.add_option('B', "build-all",  build_all,     GetOpt::NO_ARG).set_help("Build all targets unconditionally.");
  91         getopt.add_option('C', "chdir",      work_dir,      GetOpt::REQUIRED_ARG).set_help("Change to DIR before doing anything else.", "DIR");
  92         getopt.add_option('P', "progress",   show_progress, GetOpt::NO_ARG).set_help("Display progress while building.");
  93         getopt.add_option('W', "what-if",    what_if,       GetOpt::REQUIRED_ARG).set_help("Pretend that FILE has changed.", "FILE");
  94         getopt.add_option(     "arch",       arch,          GetOpt::REQUIRED_ARG).set_help("Architecture to build for.", "ARCH");
  95         getopt.add_option(     "conf-only",  conf_only,     GetOpt::NO_ARG).set_help("Stop after configuring packages.");
  96         getopt.add_option(     "full-paths", full_paths,    GetOpt::NO_ARG).set_help("Output full paths in analysis.");
  97         getopt.add_option(     "max-depth",  max_depth,     GetOpt::REQUIRED_ARG).set_help("Maximum depth to show in analysis.", "NUM");
  98         getopt.add_option(     "prefix",     prfx,          GetOpt::REQUIRED_ARG).set_help("Directory to install things to.", "DIR");
  99         getopt.add_option(     "warnings",   cmdline_warn,  GetOpt::REQUIRED_ARG).set_help("Compiler warnings to use.", "LIST");
 100         usagemsg = getopt.generate_usage(argv[0])+" [<target> ...]";
 101         helpmsg = getopt.generate_help();
 102         getopt(argc, argv);
 103
 104         if(!analyze_mode.empty())
 105         {
 106                 analyzer = new Analyzer(*this);
 107
 108                 if(analyze_mode=="deps")
 109                         analyzer->set_mode(Analyzer::DEPS);
 110                 else if(analyze_mode=="alldeps")
 111                         analyzer->set_mode(Analyzer::ALLDEPS);
 112                 else if(analyze_mode=="rebuild")
 113                         analyzer->set_mode(Analyzer::REBUILD);
 114                 else if(analyze_mode=="rdeps")
 115                         analyzer->set_mode(Analyzer::RDEPS);
 116                 else
 117                         throw UsageError("Invalid analyze mode");
 118
 119                 analyzer->set_max_depth(max_depth);
 120                 analyzer->set_full_paths(full_paths);
 121         }
 122         else if(!clean && !create_makefile)
 123                 build = true;
 124
 125         const vector<string> &args = getopt.get_args();
 126         for(vector<string>::const_iterator i=args.begin(); i!=args.end(); ++i)
 127         {
 128                 string::size_type equal = i->find('=');
 129                 if(equal!=string::npos)
 130                         cmdline_options.insert(StringMap::value_type(i->substr(0, equal), i->substr(equal+1)));
 131                 else
 132                         cmdline_targets.push_back(*i);
 133         }
 134
 135         if(cmdline_targets.empty())
 136                 cmdline_targets.push_back("default");
 137
 138         if(!work_dir.empty())
 139                 FS::chdir(work_dir);
 140
 141         cwd = FS::getcwd();
 142
 143         native_arch.set_tool("CC",  "gcc");
 144         native_arch.set_tool("CXX", "g++");
 145         native_arch.set_tool("LD",  "gcc");
 146         native_arch.set_tool("LXX", "g++");
 147         native_arch.set_tool("AR",  "ar");
 148
 149         load_build_file((FS::get_sys_data_dir(argv[0], "builder")/"builderrc").str());
 150         load_build_file((FS::get_user_data_dir("builder")/"rc").str());
 151
 152         if(arch.empty())
 153                 current_arch = &native_arch;
 154         else
 155                 current_arch = new Architecture(*this, arch);
 156
 157         if(!current_arch->is_native())
 158         {
 159                 for(StringMap::const_iterator i=cross_prefixes.begin(); i!=cross_prefixes.end(); ++i)
 160                         if(current_arch->match_name(i->first))
 161                         {
 162                                 current_arch->set_cross_prefix(i->second);
 163                                 break;
 164                         }
 165         }
 166
 167         if(prfx.empty())
 168         {
 169                 if(current_arch->is_native())
 170                         prefix = (FS::get_home_dir()/"local").str();
 171                 else
 172                         prefix = (FS::get_home_dir()/"local"/current_arch->get_name()).str();
 173         }
 174         else
 175                 prefix = FS::getcwd()/prfx;
 176
 177         warnings.push_back("all");
 178         warnings.push_back("extra");
 179         warnings.push_back("shadow");
 180         warnings.push_back("pointer-arith");
 181         warnings.push_back("error");
 182         for(StringList::iterator i=cmdline_warn.begin(); i!=cmdline_warn.end(); ++i)
 183         {
 184                 vector<string> warns = split(*i, ',');
 185                 warnings.insert(warnings.end(), warns.begin(), warns.end());
 186         }
 187
 188         pkg_path.push_back(cwd/".");
 189         pkg_path.push_back(cwd/"..");
 190 }
 191
 192 Builder::~Builder()
 193 {
 194         for(PackageMap::iterator i=packages.begin(); i!=packages.end(); ++i)
 195                 delete i->second;
 196         for(TargetMap::iterator i=targets.begin(); i!=targets.end(); ++i)
 197                 delete i->second;
 198         delete analyzer;
 199 }
 200
 201 int Builder::main()
 202 {
 203         if(prefix.str()!="/usr")
 204         {
 205                 FS::Path pcdir = prefix/"lib"/"pkgconfig";
 206                 if(const char *pcp = getenv("PKG_CONFIG_PATH"))
 207                 {
 208                         vector<string> path = split(pcp, ':');
 209                         bool found = false;
 210                         for(vector<string>::const_iterator i=path.begin(); (!found && i!=path.end()); ++i)
 211                                 found = (*i==pcdir.str());
 212                         if(!found)
 213                         {
 214                                 path.push_back(pcdir.str());
 215                                 setenv("PKG_CONFIG_PATH", join(path.begin(), path.end(), ":").c_str(), true);
 216                         }
 217                 }
 218                 else
 219                         setenv("PKG_CONFIG_PATH", pcdir.str().c_str(), true);
 220         }
 221
 222         if(load_build_file(cwd/build_file))
 223         {
 224                 if(help)
 225                 {
 226                         usage(0, "builder", false);
 227                         return 0;
 228                 }
 229                 else
 230                 {
 231                         IO::print(IO::cerr, "No build info here.\n");
 232                         return 1;
 233                 }
 234         }
 235
 236         main_pkg->configure(cmdline_options, conf_all?2:1);
 237
 238         if(help)
 239         {
 240                 usage(0, "builder", false);
 241                 IO::print("\n");
 242                 package_help();
 243                 return 0;
 244         }
 245
 246         if(!conf_only && create_targets())
 247                 return 1;
 248
 249         PackageList all_reqs = main_pkg->collect_requires();
 250
 251         if(conf_only)
 252                 return 0;
 253
 254         if(verbose>=2)
 255         {
 256                 IO::print("Building on %s, for %s%s\n", native_arch.get_name(),
 257                         current_arch->get_name(), (current_arch->is_native() ? " (native)" : ""));
 258                 IO::print("Prefix is %s\n", prefix);
 259         }
 260         if(verbose>=1)
 261                 IO::print("%d active packages, %d targets\n", all_reqs.size(), targets.size());
 262         if(verbose>=2)
 263         {
 264                 for(PackageList::const_iterator i=all_reqs.begin(); i!=all_reqs.end(); ++i)
 265                 {
 266                         IO::print(" %s", (*i)->get_name());
 267                         if(dynamic_cast<SourcePackage *>(*i))
 268                                 IO::print("*");
 269                         unsigned count = 0;
 270                         unsigned to_be_built = 0;
 271                         for(TargetMap::iterator j=targets.begin(); j!=targets.end(); ++j)
 272                                 if(j->second->get_package()==*i)
 273                                 {
 274                                         ++count;
 275                                         if(j->second->get_rebuild())
 276                                                 ++to_be_built;
 277                                 }
 278                         if(count)
 279                         {
 280                                 IO::print(" (%d targets", count);
 281                                 if(to_be_built)
 282                                         IO::print(", %d to be built", to_be_built);
 283                                 IO::print(")");
 284                         }
 285                         IO::print("\n");
 286                 }
 287         }
 288
 289         if(analyzer)
 290                 analyzer->analyze();
 291
 292         if(!problems.empty())
 293         {
 294                 IO::print(IO::cerr, "The following problems were detected:\n");
 295                 for(ProblemList::iterator i=problems.begin(); i!=problems.end(); ++i)
 296                         IO::print(IO::cerr, "  %s: %s\n", i->package, i->descr);
 297                 if(!analyzer)
 298                         IO::print(IO::cerr, "Please fix them and try again.\n");
 299                 return 1;
 300         }
 301
 302         if(clean)
 303                 exit_code = do_clean();
 304         else if(build)
 305                 exit_code = do_build();
 306
 307         return exit_code;
 308 }
 309
 310 string Builder::run_pkgconfig(const string &pkg, const string &what)
 311 {
 312         list<string> argv;
 313         argv.push_back("pkg-config");
 314         if(what=="cflags" || what=="libs")
 315                 argv.push_back("--"+what);
 316         else if(what=="flags")
 317         {
 318                 argv.push_back("--cflags");
 319                 argv.push_back("--libs");
 320         }
 321         else
 322                 argv.push_back("--variable="+what);
 323         argv.push_back(pkg);
 324
 325         if(verbose>=4)
 326                 IO::print("Running %s\n", join(argv.begin(), argv.end()));
 327
 328         int status;
 329         string res = run_command(argv, &status);
 330         if(status)
 331                 throw Exception(format("pkg-config for package %s failed", pkg));
 332
 333         return res;
 334 }
 335
 336 Package *Builder::get_package(const string &name)
 337 {
 338         PackageMap::iterator i = packages.find(format("%s/%s", name, current_arch->get_system()));
 339         if(i==packages.end())
 340                 i = packages.find(name);
 341         if(i!=packages.end())
 342                 return i->second;
 343
 344         if(!no_externals)
 345         {
 346                 FS::Path path = get_package_location(name);
 347                 if(!path.empty() && !load_build_file(path/"Build"))
 348                 {
 349                         i = packages.find(name);
 350                         if(i!=packages.end())
 351                                 return i->second;
 352                 }
 353         }
 354
 355         Package *pkg = 0;
 356         try
 357         {
 358                 // Package source not found - create a binary package
 359                 pkg = BinaryPackage::from_pkgconfig(*this, name);
 360         }
 361         catch(...)
 362         {
 363                 problem(name, "not found");
 364         }
 365
 366         packages.insert(PackageMap::value_type(name, pkg));
 367
 368         return pkg;
 369 }
 370
 371 Target *Builder::get_target(const string &n) const
 372 {
 373         // XXX Used for getting targets by path.  get_target(const FS::Path &)?
 374         TargetMap::const_iterator i = targets.find(n);
 375         if(i!=targets.end())
 376                 return i->second;
 377         return 0;
 378 }
 379
 380 Target *Builder::get_header(const string &include, const FS::Path &from, const list<string> &path)
 381 {
 382         string hash(8, 0);
 383         if(include[0]=='\"')
 384                 update_hash(hash, from.str());
 385         for(list<string>::const_iterator i=path.begin(); i!=path.end(); ++i)
 386                 update_hash(hash, *i);
 387
 388         string id = hash+include;
 389         TargetMap::iterator i = includes.find(id);
 390         if(i!=includes.end())
 391                 return i->second;
 392
 393         static string cxx_ver;
 394         if(cxx_ver.empty())
 395         {
 396                 StringList argv;
 397                 argv.push_back(current_arch->get_tool("CXX"));
 398                 argv.push_back("--version");
 399                 if(RegMatch m = Regex("[0-9]\\.[0-9.]+").match(run_command(argv)))
 400                 {
 401                         cxx_ver = m[0].str;
 402                         while(!cxx_ver.empty() && !FS::is_dir(FS::Path("/usr/include/c++")/cxx_ver))
 403                         {
 404                                 string::size_type dot = cxx_ver.rfind('.');
 405                                 if(dot==string::npos)
 406                                         break;
 407                                 cxx_ver.erase(dot);
 408                         }
 409                         if(verbose>=5)
 410                                 IO::print("C++ version is %s\n", cxx_ver);
 411                 }
 412                 else
 413                         cxx_ver = "-";
 414         }
 415
 416         string fn = include.substr(1);
 417         if(verbose>=5)
 418                 IO::print("Looking for include %s from %s with path %s\n", fn, from, join(path.begin(), path.end()));
 419
 420         StringList syspath;
 421         if(current_arch->is_native())
 422                 syspath.push_back("/usr/include");
 423         else
 424                 syspath.push_back("/usr/"+current_arch->get_cross_prefix()+"/include");
 425         if(cxx_ver!="-")
 426                 syspath.push_back((FS::Path("/usr/include/c++/")/cxx_ver).str());
 427
 428         Target *tgt = 0;
 429         if(include[0]=='\"')
 430                 tgt = get_header(FS::Path(from)/fn);
 431         for(list<string>::const_iterator j=path.begin(); (!tgt && j!=path.end()); ++j)
 432                 tgt = get_header(cwd/ *j/fn);
 433         for(list<string>::const_iterator j=syspath.begin(); (!tgt && j!=syspath.end()); ++j)
 434                 tgt = get_header(FS::Path(*j)/fn);
 435
 436         includes.insert(TargetMap::value_type(id, tgt));
 437
 438         return tgt;
 439 }
 440
 441 Target *Builder::get_library(const string &lib, const list<string> &path, LibMode mode)
 442 {
 443         string hash(8, 0);
 444         for(list<string>::const_iterator i=path.begin(); i!=path.end(); ++i)
 445                 update_hash(hash, *i);
 446
 447         string id = hash+string(1, mode)+lib;
 448         TargetMap::iterator i = libraries.find(id);
 449         if(i!=libraries.end())
 450                 return i->second;
 451
 452         StringList syspath;
 453         if(current_arch->is_native())
 454         {
 455                 syspath.push_back("/lib");
 456                 syspath.push_back("/usr/lib");
 457         }
 458         else
 459                 syspath.push_back("/usr/"+current_arch->get_cross_prefix()+"/lib");
 460
 461         if(verbose>=5)
 462                 IO::print("Looking for library %s with path %s\n", lib, join(path.begin(), path.end()));
 463
 464         Target *tgt = 0;
 465         for(StringList::const_iterator j=path.begin(); (!tgt && j!=path.end()); ++j)
 466                 tgt = get_library(lib, cwd/ *j, mode);
 467         for(StringList::iterator j=syspath.begin(); (!tgt && j!=syspath.end()); ++j)
 468                 tgt = get_library(lib, *j, mode);
 469
 470         libraries.insert(TargetMap::value_type(id, tgt));
 471
 472         return tgt;
 473 }
 474
 475 void Builder::apply_profile_template(Config &config, const string &pt) const
 476 {
 477         vector<string> parts = split(pt, '-');
 478
 479         for(vector<string>::iterator i=parts.begin(); i!=parts.end(); ++i)
 480         {
 481                 ProfileTemplateMap::const_iterator j = profile_tmpl.find(*i);
 482                 if(j==profile_tmpl.end())
 483                         continue;
 484
 485                 config.update(j->second);
 486         }
 487 }
 488
 489 void Builder::problem(const string &p, const string &d)
 490 {
 491         problems.push_back(Problem(p, d));
 492 }
 493
 494 void Builder::add_target(FileTarget *t)
 495 {
 496         targets.insert(TargetMap::value_type(t->get_path().str(), t));
 497         new_tgts.push_back(t);
 498 }
 499
 500 void Builder::add_target(VirtualTarget *t)
 501 {
 502         targets.insert(TargetMap::value_type(t->get_name(), t));
 503         new_tgts.push_back(t);
 504 }
 505
 506 void Builder::usage(const char *reason, const char *argv0, bool brief)
 507 {
 508         if(reason)
 509                 IO::print(IO::cerr, "%s\n", reason);
 510
 511         if(brief)
 512                 IO::print(IO::cerr, "Usage: %s\n", usagemsg);
 513         else
 514         {
 515                 IO::print(IO::cerr, "Builder 1.0\n\n");
 516                 IO::print(IO::cerr, "Usage: %s [options] [<target> ...]\n\n", argv0);
 517                 IO::print(IO::cerr, "Options:\n");
 518                 IO::print(IO::cerr, helpmsg);
 519         }
 520 }
 521
 522 FS::Path Builder::get_package_location(const string &name)
 523 {
 524         if(verbose>=3)
 525                 IO::print("Looking for package %s\n", name);
 526
 527         try
 528         {
 529                 // Try to get source directory with pkgconfig
 530                 string srcdir = strip(run_pkgconfig(name, "source"));
 531                 if(!srcdir.empty())
 532                         return srcdir;
 533         }
 534         catch(...)
 535         { }
 536
 537         if(pkg_dirs.empty())
 538         {
 539                 for(list<FS::Path>::const_iterator i=pkg_path.begin(); i!=pkg_path.end(); ++i)
 540                 {
 541                         list<string> files = list_files(*i);
 542                         for(list<string>::const_iterator j=files.begin(); j!=files.end(); ++j)
 543                         {
 544                                 FS::Path full = *i / *j;
 545                                 if(FS::exists(full/"Build"))
 546                                         pkg_dirs.push_back(full);
 547                         }
 548                 }
 549                 if(verbose>=3)
 550                         IO::print("%d packages found in path\n", pkg_dirs.size());
 551         }
 552
 553         bool msp = !name.compare(0, 3, "msp");
 554         for(list<FS::Path>::const_iterator i=pkg_dirs.begin(); i!=pkg_dirs.end(); ++i)
 555         {
 556                 string base = basename(*i);
 557                 unsigned dash = base.rfind('-');
 558
 559                 if(!base.compare(0, dash, name))
 560                         return *i;
 561                 else if(msp && !base.compare(0, dash-3, name, 3, string::npos))
 562                         return *i;
 563         }
 564
 565         return FS::Path();
 566 }
 567
 568 int Builder::load_build_file(const FS::Path &fn)
 569 {
 570         try
 571         {
 572                 IO::BufferedFile in(fn.str());
 573
 574                 if(verbose>=3)
 575                         IO::print("Reading %s\n", fn);
 576
 577                 DataFile::Parser parser(in, fn.str());
 578                 Loader loader(*this, fn.subpath(0, fn.size()-1));
 579                 loader.load(parser);
 580         }
 581         catch(const IO::FileNotFound &)
 582         {
 583                 return -1;
 584         }
 585
 586         return 0;
 587 }
 588
 589 int Builder::create_targets()
 590 {
 591         Target *world = new VirtualTarget(*this, "world");
 592
 593         Target *def_tgt = new VirtualTarget(*this, "default");
 594         world->add_depend(def_tgt);
 595
 596         Target *install = new VirtualTarget(*this, "install");
 597         world->add_depend(install);
 598
 599         Target *tarballs = new VirtualTarget(*this, "tarballs");
 600         world->add_depend(tarballs);
 601
 602         PackageList all_reqs = main_pkg->collect_requires();
 603         for(PackageList::iterator i=all_reqs.begin(); i!=all_reqs.end(); ++i)
 604         {
 605                 SourcePackage *spkg = dynamic_cast<SourcePackage *>(*i);
 606                 if(!spkg)
 607                         continue;
 608
 609                 const ComponentList &components = spkg->get_components();
 610                 for(ComponentList::const_iterator j=components.begin(); j!=components.end(); ++j)
 611                         j->create_targets();
 612
 613                 if(spkg->get_install_flags()&(SourcePackage::LIB|SourcePackage::INCLUDE))
 614                 {
 615                         PkgConfig *pc = new PkgConfig(*this, *spkg);
 616                         install->add_depend(new Install(*this, *spkg, *pc));
 617                 }
 618         }
 619
 620         // Find dependencies until no new targets are created
 621         while(!new_tgts.empty())
 622         {
 623                 Target *tgt = new_tgts.front();
 624                 new_tgts.erase(new_tgts.begin());
 625                 tgt->find_depends();
 626                 if(!tgt->get_depends_ready())
 627                         new_tgts.push_back(tgt);
 628         }
 629
 630         // Apply what-ifs
 631         for(StringList::iterator i=what_if.begin(); i!=what_if.end(); ++i)
 632         {
 633                 FileTarget *tgt = dynamic_cast<FileTarget *>(get_target((cwd/ *i).str()));
 634                 if(!tgt)
 635                 {
 636                         IO::print(IO::cerr, "Unknown what-if target %s\n", *i);
 637                         return -1;
 638                 }
 639                 tgt->touch();
 640         }
 641
 642         // Make the cmdline target depend on all targets mentioned on the command line
 643         Target *cmdline = new VirtualTarget(*this, "cmdline");
 644         bool build_world = false;
 645         for(list<string>::iterator i=cmdline_targets.begin(); i!=cmdline_targets.end(); ++i)
 646         {
 647                 Target *tgt = get_target(*i);
 648                 if(!tgt)
 649                         tgt = get_target((cwd/ *i).str());
 650                 if(!tgt)
 651                 {
 652                         IO::print("I don't know anything about %s\n", *i);
 653                         return -1;
 654                 }
 655                 if(tgt==world)
 656                         build_world = true;
 657                 cmdline->add_depend(tgt);
 658         }
 659
 660         cmdline->prepare();
 661
 662         for(PackageMap::iterator i=packages.begin(); i!=packages.end(); ++i)
 663                 if(SourcePackage *spkg = dynamic_cast<SourcePackage *>(i->second))
 664                         spkg->get_deps_cache().save();
 665
 666         return 0;
 667 }
 668
 669 Target *Builder::get_header(const FS::Path &fn)
 670 {
 671         Target *tgt = get_target(fn.str());
 672         if(tgt) return tgt;
 673
 674         if(FS::is_reg(fn))
 675         {
 676                 tgt = new SystemHeader(*this, fn.str());
 677                 return tgt;
 678         }
 679         return 0;
 680 }
 681
 682 Target *Builder::get_library(const string &lib, const FS::Path &path, LibMode mode)
 683 {
 684         // Populate a list of candidate filenames
 685         StringList candidates;
 686
 687         if(mode!=ALL_STATIC)
 688         {
 689                 // XXX Should probably let the Architecture populate the list
 690                 if(current_arch->get_system()=="windows")
 691                 {
 692                         candidates.push_back("lib"+lib+".dll");
 693                         candidates.push_back(lib+".dll");
 694                 }
 695                 else
 696                         candidates.push_back("lib"+lib+".so");
 697         }
 698
 699         /* Static libraries are always considered, since sometimes shared versions
 700         may not be available */
 701         candidates.push_back("lib"+lib+".a");
 702         if(current_arch->get_system()=="windows")
 703                 candidates.push_back("lib"+lib+".dll.a");
 704
 705         for(StringList::iterator i=candidates.begin(); i!=candidates.end(); ++i)
 706         {
 707                 string full = (path/ *i).str();
 708                 Target *tgt = get_target(full);
 709
 710                 if(tgt)
 711                 {
 712                         Target *real_tgt = tgt->get_real_target();
 713
 714                         /* Ignore dynamic libraries from local packages unless library mode is
 715                         DYNAMIC */
 716                         if(dynamic_cast<SharedLibrary *>(real_tgt) && mode!=DYNAMIC)
 717                                 continue;
 718                         else if(tgt)
 719                                 return tgt;
 720                 }
 721                 else if(FS::is_reg(full))
 722                 {
 723                         tgt = new SystemLibrary(*this, full);
 724                         return tgt;
 725                 }
 726         }
 727
 728         return 0;
 729 }
 730
 731 int Builder::do_build()
 732 {
 733         Target *cmdline = get_target("cmdline");
 734
 735         unsigned total = 0;
 736         for(map<string, Target *>::const_iterator i=targets.begin(); i!=targets.end(); ++i)
 737                 if(i->second->is_buildable() && i->second->get_rebuild())
 738                         ++total;
 739
 740         if(!total)
 741         {
 742                 IO::print("Already up to date\n");
 743                 return 0;
 744         }
 745         if(verbose>=1)
 746                 IO::print("Will build %d target%s\n", total, (total!=1 ? "s" : ""));
 747
 748         vector<Action *> actions;
 749
 750         unsigned count = 0;
 751
 752         bool fail = false;
 753         bool finish = false;
 754
 755         while(!finish)
 756         {
 757                 if(actions.size()<jobs && !fail)
 758                 {
 759                         Target *tgt = cmdline->get_buildable_target();
 760                         if(tgt)
 761                         {
 762                                 Action *action = tgt->build();
 763                                 if(action)
 764                                         actions.push_back(action);
 765
 766                                 if(show_progress)
 767                                         IO::print("%d of %d target%s built\033[1G", count, total, (total!=1 ? "s" : ""));
 768                         }
 769                         else if(actions.empty())
 770                                 finish = true;
 771                 }
 772                 else
 773                         Time::sleep(10*Time::msec);
 774
 775                 for(unsigned i=0; i<actions.size();)
 776                 {
 777                         int status = actions[i]->check();
 778                         if(status>=0)
 779                         {
 780                                 ++count;
 781
 782                                 delete actions[i];
 783                                 actions.erase(actions.begin()+i);
 784                                 if(status>0)
 785                                         fail = true;
 786                                 if(actions.empty() && fail)
 787                                         finish = true;
 788                         }
 789                         else
 790                                 ++i;
 791                 }
 792         }
 793
 794         if(show_progress)
 795                 IO::print("\033[K");
 796         if(fail)
 797                 IO::print("Build failed\n");
 798         else if(show_progress)
 799                 IO::print("Build complete\n");
 800
 801         return fail;
 802 }
 803
 804 int Builder::do_clean()
 805 {
 806         // Cleaning doesn't care about ordering, so a simpler method can be used
 807
 808         set<Target *> clean_tgts;
 809         TargetList queue;
 810         queue.push_back(get_target("cmdline"));
 811
 812         while(!queue.empty())
 813         {
 814                 Target *tgt = queue.front();
 815                 queue.erase(queue.begin());
 816
 817                 if(tgt->is_buildable() && (tgt->get_package()==main_pkg || clean>=2))
 818                         clean_tgts.insert(tgt);
 819
 820                 const TargetList &deps = tgt->get_depends();
 821                 for(TargetList::const_iterator i=deps.begin(); i!=deps.end(); ++i)
 822                         if(!clean_tgts.count(*i))
 823                                 queue.push_back(*i);
 824         }
 825
 826         for(set<Target *>::iterator i=clean_tgts.begin(); i!=clean_tgts.end(); ++i)
 827                 if(FileTarget *ft = dynamic_cast<FileTarget *>(*i))
 828                 {
 829                         Action *action = new Unlink(*this, *ft);
 830                         while(action->check()<0) ;
 831                         delete action;
 832                 }
 833
 834         return 0;
 835 }
 836
 837 void Builder::package_help()
 838 {
 839         const Config &config = main_pkg->get_config();
 840         const Config::OptionMap &options = config.get_options();
 841
 842         IO::print("Required packages:\n  ");
 843         const PackageList &requires = main_pkg->get_requires();
 844         for(PackageList::const_iterator i=requires.begin(); i!=requires.end(); ++i)
 845         {
 846                 if(i!=requires.begin())
 847                         IO::print(", ");
 848                 IO::print((*i)->get_name());
 849         }
 850         IO::print("\n\nPackage configuration:\n");
 851         for(Config::OptionMap::const_iterator i=options.begin(); i!=options.end(); ++i)
 852         {
 853                 const Config::Option &opt = i->second;
 854                 IO::print("  %s: %s (%s)", opt.name, opt.descr, opt.value);
 855                 if(opt.value!=opt.defv)
 856                         IO::print(" [%s]", opt.defv);
 857                 IO::print("\n");
 858         }
 859 }
 860
 861 Application::RegApp<Builder> Builder::reg;
 862 string Builder::usagemsg;
 863 string Builder::helpmsg;
 864
 865
 866 Builder::Loader::Loader(Builder &b, const FS::Path &s):
 867         bld(b),
 868         src(s)
 869 {
 870         add("binary_package", &Loader::binpkg);
 871         add("cross_prefix", &Loader::cross_prefix);
 872         add("profile", &Loader::profile);
 873         add("package", &Loader::package);
 874 }
 875
 876 void Builder::Loader::binpkg(const string &n)
 877 {
 878         BinaryPackage *pkg = new BinaryPackage(bld, n);
 879         load_sub(*pkg);
 880         bld.packages.insert(PackageMap::value_type(n, pkg));
 881 }
 882
 883 void Builder::Loader::cross_prefix(const string &a, const string &p)
 884 {
 885         bld.cross_prefixes[a] = p;
 886 }
 887
 888 void Builder::Loader::profile(const string &n)
 889 {
 890         StringMap prf;
 891         ProfileLoader ldr(prf);
 892         load_sub_with(ldr);
 893         bld.profile_tmpl.insert(ProfileTemplateMap::value_type(n, prf));
 894 }
 895
 896 void Builder::Loader::package(const string &n)
 897 {
 898         SourcePackage *pkg = new SourcePackage(bld, n, src);
 899         if(!bld.main_pkg)
 900                 bld.main_pkg = pkg;
 901
 902         load_sub(*pkg);
 903         bld.packages.insert(PackageMap::value_type(n, pkg));
 904 }
 905
 906
 907 Builder::ProfileLoader::ProfileLoader(StringMap &p):
 908         profile(p)
 909 {
 910         add("option", &ProfileLoader::option);
 911 }
 912
 913 void Builder::ProfileLoader::option(const string &o, const string &v)
 914 {
 915         profile.insert(StringMap::value_type(o, v));
 916 }