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