source/builder.cpp

   1 /* $Id$
   2
   3 This file is part of builder
   4 Copyright © 2006-2007 Mikko Rasa, Mikkosoft Productions
   5 Distributed under the LGPL
   6 */
   7
   8 #include <iostream>
   9 #include <set>
  10 #include <msp/core/except.h>
  11 #include <msp/core/getopt.h>
  12 #include <msp/datafile/parser.h>
  13 #include <msp/io/buffered.h>
  14 #include <msp/io/file.h>
  15 #include <msp/path/utils.h>
  16 #include <msp/strings/formatter.h>
  17 #include <msp/strings/regex.h>
  18 #include <msp/strings/utils.h>
  19 #include <msp/time/units.h>
  20 #include <msp/time/utils.h>
  21 #include "action.h"
  22 #include "analyzer.h"
  23 #include "binarypackage.h"
  24 #include "builder.h"
  25 #include "header.h"
  26 #include "install.h"
  27 #include "misc.h"
  28 #include "package.h"
  29 #include "pkgconfig.h"
  30 #include "sharedlibrary.h"
  31 #include "sourcepackage.h"
  32 #include "systemlibrary.h"
  33 #include "tarball.h"
  34 #include "unlink.h"
  35 #include "virtualtarget.h"
  36
  37 using namespace std;
  38 using namespace Msp;
  39
  40 Builder::Builder(int argc, char **argv):
  41         main_pkg(0),
  42         analyzer(0),
  43         build(false),
  44         clean(0),
  45         dry_run(false),
  46         help(false),
  47         verbose(1),
  48         show_progress(false),
  49         build_file("Build"),
  50         jobs(1),
  51         conf_all(false),
  52         conf_only(false),
  53         build_all(false),
  54         create_makefile(false)
  55 {
  56         string   analyze_mode;
  57         string   work_dir;
  58         bool     full_paths=false;
  59         unsigned max_depth=5;
  60
  61         GetOpt getopt;
  62         getopt.add_option('a', "analyze",    analyze_mode, GetOpt::REQUIRED_ARG);
  63         getopt.add_option('b', "build",      build,        GetOpt::NO_ARG);
  64         getopt.add_option('c', "clean",      clean,        GetOpt::NO_ARG);
  65         getopt.add_option('f', "file",       build_file,   GetOpt::REQUIRED_ARG);
  66         getopt.add_option('h', "help",       help,         GetOpt::NO_ARG);
  67         getopt.add_option('j', "jobs",       jobs,         GetOpt::REQUIRED_ARG);
  68         getopt.add_option('n', "dry-run",    dry_run,      GetOpt::NO_ARG);
  69         getopt.add_option('v', "verbose",    verbose,      GetOpt::NO_ARG);
  70         getopt.add_option('A', "conf-all",   conf_all,     GetOpt::NO_ARG);
  71         getopt.add_option('B', "build-all",  build_all,    GetOpt::NO_ARG);
  72         getopt.add_option('C', "chdir",      work_dir,     GetOpt::REQUIRED_ARG);
  73         getopt.add_option('P', "progress",   show_progress, GetOpt::NO_ARG);
  74         getopt.add_option('W', "what-if",    what_if,      GetOpt::REQUIRED_ARG);
  75         getopt.add_option(     "conf-only",  conf_only,    GetOpt::NO_ARG);
  76         getopt.add_option(     "full-paths", full_paths,   GetOpt::NO_ARG);
  77         //getopt.add_option(     "makefile",   create_makefile, GetOpt::NO_ARG);
  78         getopt.add_option(     "max-depth",  max_depth,    GetOpt::REQUIRED_ARG);
  79         getopt(argc, argv);
  80
  81         if(!analyze_mode.empty())
  82         {
  83                 analyzer=new Analyzer(*this);
  84
  85                 if(analyze_mode=="deps")
  86                         analyzer->set_mode(Analyzer::DEPS);
  87                 else if(analyze_mode=="alldeps")
  88                         analyzer->set_mode(Analyzer::ALLDEPS);
  89                 else if(analyze_mode=="rebuild")
  90                         analyzer->set_mode(Analyzer::REBUILD);
  91                 else if(analyze_mode=="rdeps")
  92                         analyzer->set_mode(Analyzer::RDEPS);
  93                 else
  94                         throw UsageError("Invalid analyze mode");
  95
  96                 analyzer->set_max_depth(max_depth);
  97                 analyzer->set_full_paths(full_paths);
  98         }
  99         else if(!clean && !create_makefile)
 100                 build=true;
 101
 102         const vector<string> &args=getopt.get_args();
 103         for(vector<string>::const_iterator i=args.begin(); i!=args.end(); ++i)
 104         {
 105                 unsigned equal=i->find('=');
 106                 if(equal!=string::npos)
 107                         cmdline_options.insert(StringMap::value_type(i->substr(0, equal), i->substr(equal+1)));
 108                 else
 109                         cmdline_targets.push_back(*i);
 110         }
 111
 112         if(cmdline_targets.empty())
 113                 cmdline_targets.push_back("default");
 114
 115         if(!work_dir.empty())
 116                 chdir(work_dir.c_str());
 117
 118         cwd=getcwd();
 119
 120         Architecture &native_arch=archs.insert(ArchMap::value_type("native", Architecture(*this, "native"))).first->second;
 121         native_arch.set_tool("CC",  "gcc");
 122         native_arch.set_tool("CXX", "g++");
 123         native_arch.set_tool("LD",  "gcc");
 124         native_arch.set_tool("LXX", "g++");
 125         native_arch.set_tool("AR",  "ar");
 126
 127         const char *home=getenv("HOME");
 128         if(home)
 129                 load_build_file((Path(home)/".builderrc").str());
 130 }
 131
 132 /**
 133 Gets a package with the specified name, possibly creating it.
 134
 135 @param   n  Package name
 136
 137 @return  Pointer to the package, or 0 if the package could not be located
 138 */
 139 Package *Builder::get_package(const string &n)
 140 {
 141         PackageMap::iterator i=packages.find(n);
 142         if(i!=packages.end())
 143                 return i->second;
 144
 145         // Try to get source directory with pkgconfig
 146         list<string> argv;
 147         argv.push_back("pkg-config");
 148         argv.push_back("--variable=source");
 149         argv.push_back(n);
 150         if(verbose>=4)
 151                 cout<<"Running "<<join(argv.begin(), argv.end())<<'\n';
 152         string srcdir=strip(run_command(argv));
 153
 154         PathList dirs;
 155         if(!srcdir.empty())
 156                 dirs.push_back(srcdir);
 157
 158         // Make some other guesses about the source directory
 159         string dirname=n;
 160         if(!dirname.compare(0, 3, "msp"))
 161                 dirname.erase(0, 3);
 162         dirs.push_back(cwd/dirname);
 163         dirs.push_back(cwd/".."/dirname);
 164
 165         // Go through the candidate directories and look for a Build file
 166         for(PathList::iterator j=dirs.begin(); j!=dirs.end(); ++j)
 167                 if(!load_build_file(*j/"Build"))
 168                 {
 169                         i=packages.find(n);
 170                         if(i!=packages.end())
 171                                 return i->second;
 172                         break;
 173                 }
 174
 175         // Package source not found - create a binary package
 176         Package *pkg=BinaryPackage::from_pkgconfig(*this, n);
 177
 178         packages.insert(PackageMap::value_type(n, pkg));
 179
 180         if(!pkg)
 181                 problem(n, "not found");
 182
 183         return pkg;
 184 }
 185
 186 /**
 187 Returns the target with the given name, or 0 if no such target exists.
 188 */
 189 Target *Builder::get_target(const string &n) const
 190 {
 191         TargetMap::const_iterator i=targets.find(n);
 192         if(i!=targets.end())
 193                 return i->second;
 194         return 0;
 195 }
 196
 197 /**
 198 Tries to locate a header included from a given location and with a given include
 199 path.  Considers known targets as well as existing files.  If a matching target
 200 is not found but a file exists, a new SystemHeader target will be created and
 201 returned.
 202 */
 203 Target *Builder::get_header(const string &include, const string &arch, const string &from, const list<string> &path)
 204 {
 205         string hash(8, 0);
 206         update_hash(hash, from);
 207         for(list<string>::const_iterator i=path.begin(); i!=path.end(); ++i)
 208                 update_hash(hash, *i);
 209
 210         string id=hash+include;
 211         TargetMap::iterator i=includes.find(id);
 212         if(i!=includes.end())
 213                 return i->second;
 214
 215         static string cxx_ver;
 216         if(cxx_ver.empty())
 217         {
 218                 StringList argv;
 219                 argv.push_back(get_architecture(arch).get_tool("CXX"));
 220                 argv.push_back("--version");
 221                 cxx_ver=Regex("[0-9]\\.[0-9.]+").match(run_command(argv))[0].str;
 222                 while(!cxx_ver.empty() && !exists(Path("/usr/include/c++")/cxx_ver))
 223                 {
 224                         unsigned dot=cxx_ver.rfind('.');
 225                         if(dot==string::npos)
 226                                 break;
 227                         cxx_ver.erase(dot);
 228                 }
 229                 if(verbose>=5)
 230                         cout<<"C++ version is "<<cxx_ver<<'\n';
 231         }
 232
 233         string fn=include.substr(1);
 234         if(verbose>=5)
 235                 cout<<"Looking for include "<<fn<<" with path "<<join(path.begin(), path.end())<<'\n';
 236
 237         StringList syspath;
 238         if(arch=="native")
 239                 syspath.push_back("/usr/include");
 240         else
 241                 syspath.push_back("/usr/"+get_architecture(arch).get_prefix()+"/include");
 242         syspath.push_back((Path("/usr/include/c++/")/cxx_ver/fn).str());
 243
 244         Target *tgt=0;
 245         if(include[0]=='\"')
 246                 tgt=get_header(Path(from)/fn);
 247         for(list<string>::const_iterator j=path.begin(); (!tgt && j!=path.end()); ++j)
 248                 tgt=get_header(cwd/ *j/fn);
 249         for(list<string>::const_iterator j=syspath.begin(); (!tgt && j!=syspath.end()); ++j)
 250                 tgt=get_header(Path(*j)/fn);
 251
 252         includes.insert(TargetMap::value_type(id, tgt));
 253
 254         return tgt;
 255 }
 256
 257 /**
 258 Tries to locate a library with the given library path.  Considers known targets
 259 as well as existing files.  If a matching target is not found but a file exists,
 260 a new SystemLibrary target will be created and returned.
 261
 262 @param   lib   Name of the library to get (without "lib" prefix or extension)
 263 @param   path  List of paths to search for the library
 264 @param   mode  Shared / static mode
 265
 266 @return  Some kind of library target, if a match was found
 267 */
 268 Target *Builder::get_library(const string &lib, const string &arch, const list<string> &path, LibMode mode)
 269 {
 270         string hash(8, 0);
 271         for(list<string>::const_iterator i=path.begin(); i!=path.end(); ++i)
 272                 update_hash(hash, *i);
 273
 274         //XXX Incorporate mode into id
 275         string id=hash+lib;
 276         TargetMap::iterator i=libraries.find(id);
 277         if(i!=libraries.end())
 278                 return i->second;
 279
 280         StringList syspath;
 281         if(arch=="native")
 282         {
 283                 syspath.push_back("/lib");
 284                 syspath.push_back("/usr/lib");
 285         }
 286         else
 287                 syspath.push_back("/usr/"+get_architecture(arch).get_prefix()+"/lib");
 288
 289         if(verbose>=5)
 290                 cout<<"Looking for library "<<lib<<" with path "<<join(path.begin(), path.end())<<'\n';
 291
 292         Target *tgt=0;
 293         for(StringList::const_iterator j=path.begin(); (!tgt && j!=path.end()); ++j)
 294                 tgt=get_library(lib, arch, cwd/ *j, mode);
 295         for(StringList::iterator j=syspath.begin(); (!tgt && j!=syspath.end()); ++j)
 296                 tgt=get_library(lib, arch, *j, mode);
 297
 298         libraries.insert(TargetMap::value_type(id, tgt));
 299
 300         return tgt;
 301 }
 302
 303 const Architecture &Builder::get_architecture(const string &arch) const
 304 {
 305         ArchMap::const_iterator i=archs.find(arch);
 306         if(i==archs.end())
 307                 throw InvalidParameterValue("Unknown architecture");
 308
 309         return i->second;
 310 }
 311
 312 void Builder::apply_profile_template(Config &config, const string &pt) const
 313 {
 314         vector<string> parts=split(pt, '-');
 315
 316         for(vector<string>::iterator i=parts.begin(); i!=parts.end(); ++i)
 317         {
 318                 ProfileTemplateMap::const_iterator j=profile_tmpl.find(*i);
 319                 if(j==profile_tmpl.end())
 320                         continue;
 321
 322                 config.update(j->second);
 323         }
 324 }
 325
 326 void Builder::problem(const string &p, const string &d)
 327 {
 328         problems.push_back(Problem(p, d));
 329 }
 330
 331 /**
 332 Adds a target to both the target map and the new target queue.  Called from
 333 Target constructor.
 334 */
 335 void Builder::add_target(Target *t)
 336 {
 337         targets.insert(TargetMap::value_type(t->get_name(), t));
 338         new_tgts.push_back(t);
 339 }
 340
 341 int Builder::main()
 342 {
 343         if(load_build_file(cwd/build_file))
 344         {
 345                 cerr<<"No build info here.\n";
 346                 return 1;
 347         }
 348
 349         main_pkg->configure(cmdline_options, conf_all?2:1);
 350
 351         if(help)
 352         {
 353                 usage(0, "builder", false);
 354                 cout<<'\n';
 355                 package_help();
 356                 return 0;
 357         }
 358
 359         if(!conf_only && create_targets())
 360                 return 1;
 361
 362         PackageList all_reqs=main_pkg->collect_requires();
 363
 364         for(PackageList::const_iterator i=all_reqs.begin(); i!=all_reqs.end(); ++i)
 365         {
 366                 SourcePackage *spkg=dynamic_cast<SourcePackage *>(*i);
 367                 string prob;
 368                 if(spkg && spkg->get_arch()!=main_pkg->get_arch())
 369                         problem(spkg->get_name(), format("wrong architecture (%s)", spkg->get_arch()));
 370         }
 371
 372         if(conf_only)
 373                 return 0;
 374
 375         cout<<all_reqs.size()<<" active packages, "<<targets.size()<<" targets\n";
 376         if(verbose>=2)
 377         {
 378                 for(PackageList::const_iterator i=all_reqs.begin(); i!=all_reqs.end(); ++i)
 379                 {
 380                         cout<<' '<<(*i)->get_name();
 381                         if(dynamic_cast<SourcePackage *>(*i))
 382                                 cout<<'*';
 383                         unsigned count=0;
 384                         unsigned ood_count=0;
 385                         for(TargetMap::iterator j=targets.begin(); j!=targets.end(); ++j)
 386                                 if(j->second->get_package()==*i)
 387                                 {
 388                                         ++count;
 389                                         if(j->second->get_rebuild())
 390                                                 ++ood_count;
 391                                 }
 392                         if(count)
 393                         {
 394                                 cout<<" ("<<count<<" targets";
 395                                 if(ood_count)
 396                                         cout<<", "<<ood_count<<" out-of-date";
 397                                 cout<<')';
 398                         }
 399                         cout<<'\n';
 400                 }
 401         }
 402
 403         if(analyzer)
 404                 analyzer->analyze();
 405
 406         if(!problems.empty())
 407         {
 408                 cerr<<"The following problems were detected:\n";
 409                 for(ProblemList::iterator i=problems.begin(); i!=problems.end(); ++i)
 410                         cerr<<"  "<<i->package<<": "<<i->descr<<'\n';
 411                 cerr<<"Please fix them and try again.\n";
 412                 return 1;
 413         }
 414
 415         //if(create_makefile
 416
 417         if(clean)
 418                 exit_code=do_clean();
 419         else if(build)
 420                 exit_code=do_build();
 421
 422         return exit_code;
 423 }
 424
 425 Builder::~Builder()
 426 {
 427         for(PackageMap::iterator i=packages.begin(); i!=packages.end(); ++i)
 428                 delete i->second;
 429         for(TargetMap::iterator i=targets.begin(); i!=targets.end(); ++i)
 430                 delete i->second;
 431         delete analyzer;
 432 }
 433
 434 void Builder::usage(const char *reason, const char *argv0, bool brief)
 435 {
 436         if(reason)
 437                 cerr<<reason<<'\n';
 438
 439         if(brief)
 440                 cerr<<"Usage: "<<argv0<<" [-a|--analyze MODE] [-b|--build] [-c|--clean] [-f|--file FILE] [-h|--help] [-j|--jobs NUM] [-n||--dry-run] [-v|--verbose] [-A|--conf-all] [-B|--build-all] [-C|--chdir DIRECTORY] [-W|--what-if FILE] [--chrome] [--conf-only] [--full-paths] [--max-depth NUM] [<target> ...]";
 441         else
 442         {
 443                 cerr<<
 444                         "Usage: "<<argv0<<" [options] [<target> ...]\n"
 445                         "\n"
 446                         "Options:\n"
 447                         "  -a, --analyze MODE  Perform analysis.  MODE can be deps, alldeps or rebuild.\n"
 448                         "  -b, --build         Perform build even if doing analysis.\n"
 449                         "  -c, --clean         Clean buildable targets.\n"
 450                         "  -f, --file FILE     Read info from FILE instead of Build.\n"
 451                         "  -h, --help          Print this message.\n"
 452                         "  -j, --jobs NUM      Run NUM commands at once, whenever possible.\n"
 453                         "  -n, --dry-run       Don't actually do anything, only show what would be done.\n"
 454                         "  -v, --verbose       Print more information about what's going on.\n"
 455                         "  -A, --conf-all      Apply configuration to all packages.\n"
 456                         "  -B, --build-all     Build all targets unconditionally.\n"
 457                         "  -C, --chdir DIR     Change to DIR before doing anything else.\n"
 458                         "  -P, --progress      Display progress while building.\n"
 459                         "  -W, --what-if FILE  Pretend that FILE has changed.\n"
 460                         "  --conf-only         Stop after configuring packages.\n"
 461                         "  --full-paths        Output full paths in analysis.\n"
 462                         //"  --makefile          Create a makefile for this package.\n"
 463                         "  --max-depth NUM     Maximum depth to show in analysis.\n";
 464         }
 465 }
 466
 467 /**
 468 Loads the given build file.
 469
 470 @param   fn  Path to the file
 471
 472 @return  0 on success, -1 if the file could not be opened
 473 */
 474 int Builder::load_build_file(const Path &fn)
 475 {
 476         IO::File inf(fn.str());
 477         IO::Buffered in(inf);
 478
 479         if(verbose>=3)
 480                 cout<<"Reading "<<fn<<'\n';
 481
 482         DataFile::Parser parser(in, fn.str());
 483         Loader loader(*this, fn.subpath(0, fn.size()-1));
 484         loader.load(parser);
 485
 486         return 0;
 487 }
 488
 489 /**
 490 Creates targets for all packages and prepares them for building.
 491
 492 @return  0 if everything went ok, -1 if something bad happened and a build
 493          shouldn't be attempted
 494 */
 495 int Builder::create_targets()
 496 {
 497         Target *world=new VirtualTarget(*this, "world");
 498
 499         Target *def_tgt=new VirtualTarget(*this, "default");
 500         world->add_depend(def_tgt);
 501
 502         Target *install=new VirtualTarget(*this, "install");
 503         world->add_depend(install);
 504
 505         Target *tarballs=new VirtualTarget(*this, "tarballs");
 506         world->add_depend(tarballs);
 507
 508         PackageList all_reqs=main_pkg->collect_requires();
 509         for(PackageList::iterator i=all_reqs.begin(); i!=all_reqs.end(); ++i)
 510         {
 511                 SourcePackage *spkg=dynamic_cast<SourcePackage *>(*i);
 512                 if(!spkg)
 513                         continue;
 514
 515                 const ComponentList &components=spkg->get_components();
 516                 for(ComponentList::const_iterator j=components.begin(); j!=components.end(); ++j)
 517                         j->create_targets();
 518
 519                 if(spkg->get_install_flags()&(SourcePackage::LIB|SourcePackage::INCLUDE))
 520                 {
 521                         PkgConfig *pc=new PkgConfig(*this, *spkg);
 522                         install->add_depend(new Install(*this, *spkg, *pc));
 523                 }
 524
 525                 tarballs->add_depend(new TarBall(*this, *spkg));
 526         }
 527
 528         // Find dependencies until no new targets are created
 529         while(!new_tgts.empty())
 530         {
 531                 Target *tgt=new_tgts.front();
 532                 new_tgts.erase(new_tgts.begin());
 533                 tgt->find_depends();
 534                 if(!tgt->get_depends_ready())
 535                         new_tgts.push_back(tgt);
 536         }
 537
 538         // Apply what-ifs
 539         for(StringList::iterator i=what_if.begin(); i!=what_if.end(); ++i)
 540         {
 541                 Target *tgt=get_target((cwd/ *i).str());
 542                 if(!tgt)
 543                 {
 544                         cerr<<"Unknown what-if target "<<*i<<'\n';
 545                         return -1;
 546                 }
 547                 tgt->touch();
 548         }
 549
 550         // Make the cmdline target depend on all targets mentioned on the command line
 551         Target *cmdline=new VirtualTarget(*this, "cmdline");
 552         bool build_world=false;
 553         for(list<string>::iterator i=cmdline_targets.begin(); i!=cmdline_targets.end(); ++i)
 554         {
 555                 Target *tgt=get_target(*i);
 556                 if(!tgt)
 557                         tgt=get_target((cwd/ *i).str());
 558                 if(!tgt)
 559                 {
 560                         cerr<<"I don't know anything about "<<*i<<'\n';
 561                         return -1;
 562                 }
 563                 if(tgt==world)
 564                         build_world=true;
 565                 cmdline->add_depend(tgt);
 566         }
 567
 568         /* If world is to be built, prepare cmdline.  If not, add cmdline to world
 569            and prepare world.  I don't really like this, but it keeps the graph
 570            acyclic. */
 571         if(build_world)
 572                 cmdline->prepare();
 573         else
 574         {
 575                 world->add_depend(cmdline);
 576                 world->prepare();
 577         }
 578
 579         for(PackageMap::iterator i=packages.begin(); i!=packages.end(); ++i)
 580                 if(SourcePackage *spkg=dynamic_cast<SourcePackage *>(i->second))
 581                         spkg->get_deps_cache().save();
 582
 583         return 0;
 584 }
 585
 586 /**
 587 Check if a header exists, either as a target or a file.  Either an existing
 588 target or a new SystemHeader target will be returned.
 589 */
 590 Target *Builder::get_header(const Msp::Path &fn)
 591 {
 592         Target *tgt=get_target(fn.str());
 593         if(tgt) return tgt;
 594
 595         if(exists(fn))
 596         {
 597                 tgt=new SystemHeader(*this, fn.str());
 598                 return tgt;
 599         }
 600         return 0;
 601 }
 602
 603 Target *Builder::get_library(const string &lib, const string &arch, const Path &path, LibMode mode)
 604 {
 605         // Populate a list of candidate filenames
 606         StringList candidates;
 607
 608         if(mode!=ALL_STATIC)
 609         {
 610                 if(arch=="win32")
 611                 {
 612                         candidates.push_back("lib"+lib+".dll");
 613                         candidates.push_back(lib+".dll");
 614                 }
 615                 else
 616                         candidates.push_back("lib"+lib+".so");
 617         }
 618
 619         /* Static libraries are always considered, since sometimes shared versions
 620         may not be available */
 621         candidates.push_back("lib"+lib+".a");
 622         if(arch=="win32")
 623                 candidates.push_back("lib"+lib+".dll.a");
 624
 625         for(StringList::iterator i=candidates.begin(); i!=candidates.end(); ++i)
 626         {
 627                 string full=(path/ *i).str();
 628                 Target *tgt=get_target(full);
 629
 630                 if(tgt)
 631                 {
 632                         Target *real_tgt=tgt;
 633                         if(dynamic_cast<Install *>(tgt))
 634                                 real_tgt=real_tgt->get_depends().front();
 635
 636                         /* Ignore dynamic libraries from local packages unless library mode is
 637                         DYNAMIC */
 638                         if(dynamic_cast<SharedLibrary *>(real_tgt) && mode!=DYNAMIC)
 639                                 continue;
 640                         else if(tgt)
 641                                 return tgt;
 642                 }
 643                 else if(exists(full))
 644                 {
 645                         tgt=new SystemLibrary(*this, full);
 646                         return tgt;
 647                 }
 648         }
 649
 650         return 0;
 651 }
 652
 653 /**
 654 Updates a hash with a string.  This is used from get_header and get_library.
 655 */
 656 void Builder::update_hash(string &hash, const string &value)
 657 {
 658         for(unsigned i=0; i<value.size(); ++i)
 659                 hash[i%hash.size()]^=value[i];
 660 }
 661
 662 /**
 663 This function supervises the build process, starting new actions when slots
 664 become available.
 665 */
 666 int Builder::do_build()
 667 {
 668         Target *cmdline=get_target("cmdline");
 669
 670         unsigned total=cmdline->count_rebuild();
 671         if(!total)
 672         {
 673                 cout<<"Already up to date\n";
 674                 return 0;
 675         }
 676         cout<<"Will build "<<total<<" target(s)\n";
 677
 678         vector<Action *> actions;
 679
 680         unsigned count=0;
 681
 682         bool fail=false;
 683         bool finish=false;
 684
 685         while(!finish)
 686         {
 687                 if(actions.size()<jobs && !fail)
 688                 {
 689                         Target *tgt=cmdline->get_buildable_target();
 690                         if(tgt)
 691                         {
 692                                 Action *action=tgt->build();
 693                                 if(action)
 694                                         actions.push_back(action);
 695
 696                                 if(show_progress)
 697                                 {
 698                                         cout<<count<<" of "<<total<<" targets built\033[1G";
 699                                         cout.flush();
 700                                 }
 701                         }
 702                         else if(actions.empty())
 703                                 finish=true;
 704                 }
 705                 else
 706                         Time::sleep(10*Time::msec);
 707
 708                 for(unsigned i=0; i<actions.size();)
 709                 {
 710                         int status=actions[i]->check();
 711                         if(status>=0)
 712                         {
 713                                 ++count;
 714
 715                                 delete actions[i];
 716                                 actions.erase(actions.begin()+i);
 717                                 if(status>0)
 718                                         fail=true;
 719                                 if(actions.empty() && fail)
 720                                         finish=true;
 721                         }
 722                         else
 723                                 ++i;
 724                 }
 725         }
 726
 727         if(show_progress)
 728                 cout<<"\033[K";
 729         if(fail)
 730                 cout<<"Build failed\n";
 731         else if(show_progress)
 732                 cout<<"Build complete\n";
 733
 734         return fail?1:0;
 735 }
 736
 737 /**
 738 Cleans buildable targets.  If clean is 1, cleans only this package.  If
 739 clean is 2 or greater, cleans all buildable packages.
 740 */
 741 int Builder::do_clean()
 742 {
 743         // Cleaning doesn't care about ordering, so a simpler method can be used
 744
 745         set<Target *> clean_tgts;
 746         TargetList queue;
 747         queue.push_back(get_target("cmdline"));
 748
 749         while(!queue.empty())
 750         {
 751                 Target *tgt=queue.front();
 752                 queue.erase(queue.begin());
 753
 754                 if(tgt->get_buildable() && (tgt->get_package()==main_pkg || clean>=2))
 755                         clean_tgts.insert(tgt);
 756
 757                 const TargetList &deps=tgt->get_depends();
 758                 for(TargetList::const_iterator i=deps.begin(); i!=deps.end(); ++i)
 759                         if(!clean_tgts.count(*i))
 760                                 queue.push_back(*i);
 761         }
 762
 763         for(set<Target *>::iterator i=clean_tgts.begin(); i!=clean_tgts.end(); ++i)
 764         {
 765                 Action *action=new Unlink(*this, **i);
 766                 while(action->check()<0);
 767                 delete action;
 768         }
 769
 770         return 0;
 771 }
 772
 773 /**
 774 Prints out information about the default package.
 775 */
 776 void Builder::package_help()
 777 {
 778         const Config &config=main_pkg->get_config();
 779         const Config::OptionMap &options=config.get_options();
 780
 781         cout<<"Required packages:\n  ";
 782         const PackageList &requires=main_pkg->get_requires();
 783         for(PackageList::const_iterator i=requires.begin(); i!=requires.end(); ++i)
 784         {
 785                 if(i!=requires.begin())
 786                         cout<<", ";
 787                 cout<<(*i)->get_name();
 788         }
 789         cout<<"\n\n";
 790         cout<<"Package configuration:\n";
 791         for(Config::OptionMap::const_iterator i=options.begin(); i!=options.end(); ++i)
 792         {
 793                 const Config::Option &opt=i->second;
 794                 cout<<"  "<<opt.name<<": "<<opt.descr<<" ("<<opt.value<<") ["<<opt.defv<<"]\n";
 795         }
 796 }
 797
 798 Application::RegApp<Builder> Builder::reg;
 799
 800
 801 Builder::Loader::Loader(Builder &b, const Path &s):
 802         bld(b),
 803         src(s)
 804 {
 805         add("architecture", &Loader::architecture);
 806         add("binary_package", &Loader::binpkg);
 807         add("profile", &Loader::profile);
 808         add("package", &Loader::package);
 809 }
 810
 811 void Builder::Loader::architecture(const string &n)
 812 {
 813         Architecture arch(bld, n);
 814         load_sub(arch);
 815         bld.archs.insert(ArchMap::value_type(n, arch));
 816 }
 817
 818 void Builder::Loader::binpkg(const string &n)
 819 {
 820         BinaryPackage *pkg=new BinaryPackage(bld, n);
 821         load_sub(*pkg);
 822         bld.packages.insert(PackageMap::value_type(n, pkg));
 823 }
 824
 825 void Builder::Loader::profile(const string &n)
 826 {
 827         StringMap prf;
 828         load_sub<ProfileLoader>(prf);
 829         bld.profile_tmpl.insert(ProfileTemplateMap::value_type(n, prf));
 830 }
 831
 832 void Builder::Loader::package(const string &n)
 833 {
 834         SourcePackage *pkg=new SourcePackage(bld, n, src);
 835         if(!bld.main_pkg)
 836                 bld.main_pkg=pkg;
 837
 838         load_sub(*pkg);
 839         bld.packages.insert(PackageMap::value_type(n, pkg));
 840 }
 841
 842
 843 Builder::ProfileLoader::ProfileLoader(StringMap &p):
 844         profile(p)
 845 {
 846         add("option", &ProfileLoader::option);
 847 }
 848
 849 void Builder::ProfileLoader::option(const string &o, const string &v)
 850 {
 851         profile.insert(StringMap::value_type(o, v));
 852 }