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 <fstream>
   9 #include <iostream>
  10 #include <set>
  11 #include <msp/core/error.h>
  12 #include <msp/core/getopt.h>
  13 #include <msp/datafile/parser.h>
  14 #include <msp/path/utils.h>
  15 #include <msp/strings/formatter.h>
  16 #include <msp/strings/utils.h>
  17 #include <msp/time/units.h>
  18 #include <msp/time/utils.h>
  19 #include "action.h"
  20 #include "analyzer.h"
  21 #include "binarypackage.h"
  22 #include "builder.h"
  23 #include "header.h"
  24 #include "install.h"
  25 #include "misc.h"
  26 #include "package.h"
  27 #include "pkgconfig.h"
  28 #include "sharedlibrary.h"
  29 #include "sourcepackage.h"
  30 #include "systemlibrary.h"
  31 #include "tarball.h"
  32 #include "unlink.h"
  33 #include "virtualtarget.h"
  34
  35 using namespace std;
  36 using namespace Msp;
  37
  38 Builder::Builder(int argc, char **argv):
  39         main_pkg(0),
  40         analyzer(0),
  41         build(false),
  42         clean(0),
  43         dry_run(false),
  44         help(false),
  45         verbose(1),
  46         show_progress(false),
  47         build_file("Build"),
  48         jobs(1),
  49         conf_all(false),
  50         conf_only(false),
  51         build_all(false),
  52         create_makefile(false)
  53 {
  54         string   analyze_mode;
  55         string   work_dir;
  56         bool     full_paths=false;
  57         unsigned max_depth=5;
  58
  59         GetOpt getopt;
  60         getopt.add_option('a', "analyze",    analyze_mode, GetOpt::REQUIRED_ARG);
  61         getopt.add_option('b', "build",      build,        GetOpt::NO_ARG);
  62         getopt.add_option('c', "clean",      clean,        GetOpt::NO_ARG);
  63         getopt.add_option('f', "file",       build_file,   GetOpt::REQUIRED_ARG);
  64         getopt.add_option('h', "help",       help,         GetOpt::NO_ARG);
  65         getopt.add_option('j', "jobs",       jobs,         GetOpt::REQUIRED_ARG);
  66         getopt.add_option('n', "dry-run",    dry_run,      GetOpt::NO_ARG);
  67         getopt.add_option('v', "verbose",    verbose,      GetOpt::NO_ARG);
  68         getopt.add_option('A', "conf-all",   conf_all,     GetOpt::NO_ARG);
  69         getopt.add_option('B', "build-all",  build_all,    GetOpt::NO_ARG);
  70         getopt.add_option('C', "chdir",      work_dir,     GetOpt::REQUIRED_ARG);
  71         getopt.add_option('P', "progress",   show_progress, GetOpt::NO_ARG);
  72         getopt.add_option('W', "what-if",    what_if,      GetOpt::REQUIRED_ARG);
  73         getopt.add_option(     "conf-only",  conf_only,    GetOpt::NO_ARG);
  74         getopt.add_option(     "full-paths", full_paths,   GetOpt::NO_ARG);
  75         //getopt.add_option(     "makefile",   create_makefile, GetOpt::NO_ARG);
  76         getopt.add_option(     "max-depth",  max_depth,    GetOpt::REQUIRED_ARG);
  77         getopt(argc, argv);
  78
  79         if(!analyze_mode.empty())
  80         {
  81                 analyzer=new Analyzer(*this);
  82
  83                 if(analyze_mode=="deps")
  84                         analyzer->set_mode(Analyzer::DEPS);
  85                 else if(analyze_mode=="alldeps")
  86                         analyzer->set_mode(Analyzer::ALLDEPS);
  87                 else if(analyze_mode=="rebuild")
  88                         analyzer->set_mode(Analyzer::REBUILD);
  89                 else if(analyze_mode=="rdeps")
  90                         analyzer->set_mode(Analyzer::RDEPS);
  91                 else
  92                         throw UsageError("Invalid analyze mode");
  93
  94                 analyzer->set_max_depth(max_depth);
  95                 analyzer->set_full_paths(full_paths);
  96         }
  97         else if(!clean && !create_makefile)
  98                 build=true;
  99
 100         const vector<string> &args=getopt.get_args();
 101         for(vector<string>::const_iterator i=args.begin(); i!=args.end(); ++i)
 102         {
 103                 unsigned equal=i->find('=');
 104                 if(equal!=string::npos)
 105                         cmdline_options.insert(StringMap::value_type(i->substr(0, equal), i->substr(equal+1)));
 106                 else
 107                         cmdline_targets.push_back(*i);
 108         }
 109
 110         if(cmdline_targets.empty())
 111                 cmdline_targets.push_back("default");
 112
 113         if(!work_dir.empty())
 114                 chdir(work_dir.c_str());
 115
 116         cwd=getcwd();
 117
 118         Architecture &native_arch=archs.insert(ArchMap::value_type("native", Architecture(*this, "native"))).first->second;
 119         native_arch.set_tool("CC",  "gcc");
 120         native_arch.set_tool("CXX", "g++");
 121         native_arch.set_tool("LD",  "gcc");
 122         native_arch.set_tool("LXX", "g++");
 123         native_arch.set_tool("AR",  "ar");
 124
 125         const char *home=getenv("HOME");
 126         if(home)
 127                 load_build_file((Path(home)/".builderrc").str());
 128 }
 129
 130 /**
 131 Gets a package with the specified name, possibly creating it.
 132
 133 @param   n  Package name
 134
 135 @return  Pointer to the package, or 0 if the package could not be located
 136 */
 137 Package *Builder::get_package(const string &n)
 138 {
 139         PackageMap::iterator i=packages.find(n);
 140         if(i!=packages.end())
 141                 return i->second;
 142
 143         // Try to get source directory with pkgconfig
 144         list<string> argv;
 145         argv.push_back("pkg-config");
 146         argv.push_back("--variable=source");
 147         argv.push_back(n);
 148         if(verbose>=4)
 149                 cout<<"Running "<<join(argv.begin(), argv.end())<<'\n';
 150         string srcdir=strip(run_command(argv));
 151
 152         PathList dirs;
 153         if(!srcdir.empty())
 154                 dirs.push_back(srcdir);
 155
 156         // Make some other guesses about the source directory
 157         string dirname=n;
 158         if(!dirname.compare(0, 3, "msp"))
 159                 dirname.erase(0, 3);
 160         dirs.push_back(cwd/dirname);
 161         dirs.push_back(cwd/".."/dirname);
 162
 163         // Go through the candidate directories and look for a Build file
 164         for(PathList::iterator j=dirs.begin(); j!=dirs.end(); ++j)
 165                 if(!load_build_file(*j/"Build"))
 166                 {
 167                         i=packages.find(n);
 168                         if(i!=packages.end())
 169                                 return i->second;
 170                         break;
 171                 }
 172
 173         // Package source not found - create a binary package
 174         Package *pkg=BinaryPackage::from_pkgconfig(*this, n);
 175
 176         packages.insert(PackageMap::value_type(n, pkg));
 177
 178         if(!pkg)
 179                 problem(n, "not found");
 180
 181         return pkg;
 182 }
 183
 184 /**
 185 Returns the target with the given name, or 0 if no such target exists.
 186 */
 187 Target *Builder::get_target(const string &n) const
 188 {
 189         TargetMap::const_iterator i=targets.find(n);
 190         if(i!=targets.end())
 191                 return i->second;
 192         return 0;
 193 }
 194
 195 /**
 196 Tries to locate a header included from a given location and with a given include
 197 path.  Considers known targets as well as existing files.  If a matching target
 198 is not found but a file exists, a new SystemHeader target will be created and
 199 returned.
 200 */
 201 Target *Builder::get_header(const string &include, const string &, const string &from, const list<string> &path)
 202 {
 203         string hash(8, 0);
 204         update_hash(hash, from);
 205         for(list<string>::const_iterator i=path.begin(); i!=path.end(); ++i)
 206                 update_hash(hash, *i);
 207
 208         string id=hash+include;
 209         TargetMap::iterator i=includes.find(id);
 210         if(i!=includes.end())
 211                 return i->second;
 212
 213         string fn=include.substr(1);
 214         Target *tgt=0;
 215         if(include[0]=='"' && (tgt=get_header(Path(from)/fn)))
 216                 ;
 217         else if((tgt=get_header(Path("/usr/include")/fn)))
 218                 ;
 219         //XXX Determine the C++ header location dynamically
 220         else if((tgt=get_header(Path("/usr/include/c++/4.1.2")/fn)))
 221                 ;
 222         else
 223         {
 224                 for(list<string>::const_iterator j=path.begin(); (j!=path.end() && !tgt); ++j)
 225                         tgt=get_header(cwd/ *j/fn);
 226         }
 227
 228         includes.insert(TargetMap::value_type(id, tgt));
 229
 230         return tgt;
 231 }
 232
 233 /**
 234 Tries to locate a library with the given library path.  Considers known targets
 235 as well as existing files.  If a matching target is not found but a file exists,
 236 a new SystemLibrary target will be created and returned.
 237
 238 @param   lib   Name of the library to get (without "lib" prefix or extension)
 239 @param   path  List of paths to search for the library
 240 @param   mode  Shared / static mode
 241
 242 @return  Some kind of library target, if a match was found
 243 */
 244 Target *Builder::get_library(const string &lib, const string &arch, const list<string> &path, LibMode mode)
 245 {
 246         string hash(8, 0);
 247         for(list<string>::const_iterator i=path.begin(); i!=path.end(); ++i)
 248                 update_hash(hash, *i);
 249
 250         //XXX Incorporate mode into id
 251         string id=hash+lib;
 252         TargetMap::iterator i=libraries.find(id);
 253         if(i!=libraries.end())
 254                 return i->second;
 255
 256         StringList syspath;
 257         if(arch=="native")
 258         {
 259                 syspath.push_back("/lib");
 260                 syspath.push_back("/usr/lib");
 261         }
 262         else
 263                 syspath.push_back("/usr/"+get_architecture(arch).get_prefix()+"/lib");
 264
 265         Target *tgt=0;
 266         for(StringList::iterator j=syspath.begin(); (!tgt && j!=syspath.end()); ++j)
 267                 tgt=get_library(lib, arch, *j, mode);
 268         for(StringList::const_iterator j=path.begin(); (!tgt && j!=path.end()); ++j)
 269                 tgt=get_library(lib, arch, cwd/ *j, mode);
 270
 271         libraries.insert(TargetMap::value_type(id, tgt));
 272
 273         return tgt;
 274 }
 275
 276 const Architecture &Builder::get_architecture(const string &arch) const
 277 {
 278         ArchMap::const_iterator i=archs.find(arch);
 279         if(i==archs.end())
 280                 throw InvalidParameterValue("Unknown architecture");
 281
 282         return i->second;
 283 }
 284
 285 void Builder::apply_profile_template(Config &config, const string &pt) const
 286 {
 287         vector<string> parts=split(pt, '-');
 288
 289         for(vector<string>::iterator i=parts.begin(); i!=parts.end(); ++i)
 290         {
 291                 ProfileTemplateMap::const_iterator j=profile_tmpl.find(*i);
 292                 if(j==profile_tmpl.end())
 293                         continue;
 294
 295                 config.update(j->second);
 296         }
 297 }
 298
 299 void Builder::problem(const string &p, const string &d)
 300 {
 301         problems.push_back(Problem(p, d));
 302 }
 303
 304 /**
 305 Adds a target to both the target map and the new target queue.  Called from
 306 Target constructor.
 307 */
 308 void Builder::add_target(Target *t)
 309 {
 310         targets.insert(TargetMap::value_type(t->get_name(), t));
 311         new_tgts.push_back(t);
 312 }
 313
 314 int Builder::main()
 315 {
 316         if(load_build_file(cwd/build_file))
 317         {
 318                 cerr<<"No build info here.\n";
 319                 return 1;
 320         }
 321
 322         main_pkg->configure(cmdline_options, conf_all?2:1);
 323
 324         if(help)
 325         {
 326                 usage(0, "builder", false);
 327                 cout<<'\n';
 328                 package_help();
 329                 return 0;
 330         }
 331
 332         if(!conf_only && create_targets())
 333                 return 1;
 334
 335         PackageList all_reqs=main_pkg->collect_requires();
 336
 337         for(PackageList::const_iterator i=all_reqs.begin(); i!=all_reqs.end(); ++i)
 338         {
 339                 SourcePackage *spkg=dynamic_cast<SourcePackage *>(*i);
 340                 string prob;
 341                 if(spkg && spkg->get_arch()!=main_pkg->get_arch())
 342                         problem(spkg->get_name(), format("wrong architecture (%s)", spkg->get_arch()));
 343         }
 344
 345         if(!problems.empty())
 346         {
 347                 cerr<<"The following problems were detected:\n";
 348                 for(ProblemList::iterator i=problems.begin(); i!=problems.end(); ++i)
 349                         cerr<<"  "<<i->package<<": "<<i->descr<<'\n';
 350                 cerr<<"Please fix them and try again.\n";
 351                 return 1;
 352         }
 353
 354         if(conf_only)
 355                 return 0;
 356
 357         cout<<all_reqs.size()<<" active packages, "<<targets.size()<<" targets\n";
 358         if(verbose>=2)
 359         {
 360                 for(PackageList::const_iterator i=all_reqs.begin(); i!=all_reqs.end(); ++i)
 361                 {
 362                         cout<<' '<<(*i)->get_name();
 363                         if(dynamic_cast<SourcePackage *>(*i))
 364                                 cout<<'*';
 365                         unsigned count=0;
 366                         unsigned ood_count=0;
 367                         for(TargetMap::iterator j=targets.begin(); j!=targets.end(); ++j)
 368                                 if(j->second->get_package()==*i)
 369                                 {
 370                                         ++count;
 371                                         if(j->second->get_rebuild())
 372                                                 ++ood_count;
 373                                 }
 374                         if(count)
 375                         {
 376                                 cout<<" ("<<count<<" targets";
 377                                 if(ood_count)
 378                                         cout<<", "<<ood_count<<" out-of-date";
 379                                 cout<<')';
 380                         }
 381                         cout<<'\n';
 382                 }
 383         }
 384
 385         if(analyzer)
 386                 analyzer->analyze();
 387
 388         //if(create_makefile
 389
 390         if(clean)
 391                 exit_code=do_clean();
 392         else if(build)
 393                 exit_code=do_build();
 394
 395         return exit_code;
 396 }
 397
 398 Builder::~Builder()
 399 {
 400         for(PackageMap::iterator i=packages.begin(); i!=packages.end(); ++i)
 401                 delete i->second;
 402         for(TargetMap::iterator i=targets.begin(); i!=targets.end(); ++i)
 403                 delete i->second;
 404         delete analyzer;
 405 }
 406
 407 void Builder::usage(const char *reason, const char *argv0, bool brief)
 408 {
 409         if(reason)
 410                 cerr<<reason<<'\n';
 411
 412         if(brief)
 413                 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> ...]";
 414         else
 415         {
 416                 cerr<<
 417                         "Usage: "<<argv0<<" [options] [<target> ...]\n"
 418                         "\n"
 419                         "Options:\n"
 420                         "  -a, --analyze MODE  Perform analysis.  MODE can be deps, alldeps or rebuild.\n"
 421                         "  -b, --build         Perform build even if doing analysis.\n"
 422                         "  -c, --clean         Clean buildable targets.\n"
 423                         "  -f, --file FILE     Read info from FILE instead of Build.\n"
 424                         "  -h, --help          Print this message.\n"
 425                         "  -j, --jobs NUM      Run NUM commands at once, whenever possible.\n"
 426                         "  -n, --dry-run       Don't actually do anything, only show what would be done.\n"
 427                         "  -v, --verbose       Print more information about what's going on.\n"
 428                         "  -A, --conf-all      Apply configuration to all packages.\n"
 429                         "  -B, --build-all     Build all targets unconditionally.\n"
 430                         "  -C, --chdir DIR     Change to DIR before doing anything else.\n"
 431                         "  -P, --progress      Display progress while building.\n"
 432                         "  -W, --what-if FILE  Pretend that FILE has changed.\n"
 433                         "  --conf-only         Stop after configuring packages.\n"
 434                         "  --full-paths        Output full paths in analysis.\n"
 435                         //"  --makefile          Create a makefile for this package.\n"
 436                         "  --max-depth NUM     Maximum depth to show in analysis.\n";
 437         }
 438 }
 439
 440 /**
 441 Loads the given build file.
 442
 443 @param   fn  Path to the file
 444
 445 @return  0 on success, -1 if the file could not be opened
 446 */
 447 int Builder::load_build_file(const Path &fn)
 448 {
 449         ifstream in(fn.str().c_str());
 450         if(!in)
 451                 return -1;
 452
 453         if(verbose>=3)
 454                 cout<<"Reading "<<fn<<'\n';
 455
 456         DataFile::Parser parser(in, fn.str());
 457         Loader loader(*this, fn.subpath(0, fn.size()-1));
 458         loader.load(parser);
 459
 460         return 0;
 461 }
 462
 463 /**
 464 Creates targets for all packages and prepares them for building.
 465
 466 @return  0 if everything went ok, -1 if something bad happened and a build
 467          shouldn't be attempted
 468 */
 469 int Builder::create_targets()
 470 {
 471         Target *world=new VirtualTarget(*this, "world");
 472
 473         Target *def_tgt=new VirtualTarget(*this, "default");
 474         world->add_depend(def_tgt);
 475
 476         Target *install=new VirtualTarget(*this, "install");
 477         world->add_depend(install);
 478
 479         Target *tarballs=new VirtualTarget(*this, "tarballs");
 480         world->add_depend(tarballs);
 481
 482         PackageList all_reqs=main_pkg->collect_requires();
 483         for(PackageList::iterator i=all_reqs.begin(); i!=all_reqs.end(); ++i)
 484         {
 485                 SourcePackage *spkg=dynamic_cast<SourcePackage *>(*i);
 486                 if(!spkg)
 487                         continue;
 488
 489                 const ComponentList &components=spkg->get_components();
 490                 for(ComponentList::const_iterator j=components.begin(); j!=components.end(); ++j)
 491                         j->create_targets();
 492
 493                 if(spkg->get_install_flags()&(SourcePackage::LIB|SourcePackage::INCLUDE))
 494                 {
 495                         PkgConfig *pc=new PkgConfig(*this, *spkg);
 496                         install->add_depend(new Install(*this, *spkg, *pc));
 497                 }
 498
 499                 tarballs->add_depend(new TarBall(*this, *spkg));
 500         }
 501
 502         // Find dependencies until no new targets are created
 503         while(!new_tgts.empty())
 504         {
 505                 Target *tgt=new_tgts.front();
 506                 new_tgts.erase(new_tgts.begin());
 507                 tgt->find_depends();
 508                 if(!tgt->get_depends_ready())
 509                         new_tgts.push_back(tgt);
 510         }
 511
 512         // Apply what-ifs
 513         for(StringList::iterator i=what_if.begin(); i!=what_if.end(); ++i)
 514         {
 515                 Target *tgt=get_target((cwd/ *i).str());
 516                 if(!tgt)
 517                 {
 518                         cerr<<"Unknown what-if target "<<*i<<'\n';
 519                         return -1;
 520                 }
 521                 tgt->touch();
 522         }
 523
 524         // Make the cmdline target depend on all targets mentioned on the command line
 525         Target *cmdline=new VirtualTarget(*this, "cmdline");
 526         bool build_world=false;
 527         for(list<string>::iterator i=cmdline_targets.begin(); i!=cmdline_targets.end(); ++i)
 528         {
 529                 Target *tgt=get_target(*i);
 530                 if(!tgt)
 531                         tgt=get_target((cwd/ *i).str());
 532                 if(!tgt)
 533                 {
 534                         cerr<<"I don't know anything about "<<*i<<'\n';
 535                         return -1;
 536                 }
 537                 if(tgt==world)
 538                         build_world=true;
 539                 cmdline->add_depend(tgt);
 540         }
 541
 542         /* If world is to be built, prepare cmdline.  If not, add cmdline to world
 543            and prepare world.  I don't really like this, but it keeps the graph
 544            acyclic. */
 545         if(build_world)
 546                 cmdline->prepare();
 547         else
 548         {
 549                 world->add_depend(cmdline);
 550                 world->prepare();
 551         }
 552
 553         for(PackageMap::iterator i=packages.begin(); i!=packages.end(); ++i)
 554                 if(SourcePackage *spkg=dynamic_cast<SourcePackage *>(i->second))
 555                         spkg->get_deps_cache().save();
 556
 557         return 0;
 558 }
 559
 560 /**
 561 Check if a header exists, either as a target or a file.  Either an existing
 562 target or a new SystemHeader target will be returned.
 563 */
 564 Target *Builder::get_header(const Msp::Path &fn)
 565 {
 566         Target *tgt=get_target(fn.str());
 567         if(tgt) return tgt;
 568
 569         if(exists(fn))
 570         {
 571                 tgt=new SystemHeader(*this, fn.str());
 572                 return tgt;
 573         }
 574         return 0;
 575 }
 576
 577 Target *Builder::get_library(const string &lib, const string &arch, const Path &path, LibMode mode)
 578 {
 579         // Populate a list of candidate filenames
 580         StringList candidates;
 581
 582         if(mode!=ALL_STATIC)
 583         {
 584                 if(arch=="win32")
 585                         candidates.push_back("lib"+lib+".dll");
 586                 else
 587                         candidates.push_back("lib"+lib+".so");
 588         }
 589
 590         /* Static libraries are always considered, since sometimes shared versions
 591         may not be available */
 592         candidates.push_back("lib"+lib+".a");
 593         if(arch=="win32")
 594                 candidates.push_back("lib"+lib+".dll.a");
 595
 596         for(StringList::iterator i=candidates.begin(); i!=candidates.end(); ++i)
 597         {
 598                 string full=(path/ *i).str();
 599                 Target *tgt=get_target(full);
 600
 601                 if(tgt)
 602                 {
 603                         Target *real_tgt=tgt;
 604                         if(dynamic_cast<Install *>(tgt))
 605                                 real_tgt=real_tgt->get_depends().front();
 606
 607                         /* Ignore dynamic libraries from local packages unless library mode is
 608                         DYNAMIC */
 609                         if(dynamic_cast<SharedLibrary *>(real_tgt) && mode!=DYNAMIC)
 610                                 continue;
 611                         else if(tgt)
 612                                 return tgt;
 613                 }
 614                 else if(exists(full))
 615                 {
 616                         tgt=new SystemLibrary(*this, full);
 617                         return tgt;
 618                 }
 619         }
 620
 621         return 0;
 622 }
 623
 624 /**
 625 Updates a hash with a string.  This is used from get_header and get_library.
 626 */
 627 void Builder::update_hash(string &hash, const string &value)
 628 {
 629         for(unsigned i=0; i<value.size(); ++i)
 630                 hash[i%hash.size()]^=value[i];
 631 }
 632
 633 /**
 634 This function supervises the build process, starting new actions when slots
 635 become available.
 636 */
 637 int Builder::do_build()
 638 {
 639         Target *cmdline=get_target("cmdline");
 640
 641         unsigned total=cmdline->count_rebuild();
 642         if(!total)
 643         {
 644                 cout<<"Already up to date\n";
 645                 return 0;
 646         }
 647         cout<<"Will build "<<total<<" target(s)\n";
 648
 649         vector<Action *> actions;
 650
 651         unsigned count=0;
 652
 653         bool fail=false;
 654         bool finish=false;
 655
 656         while(!finish)
 657         {
 658                 if(actions.size()<jobs && !fail)
 659                 {
 660                         Target *tgt=cmdline->get_buildable_target();
 661                         if(tgt)
 662                         {
 663                                 Action *action=tgt->build();
 664                                 if(action)
 665                                         actions.push_back(action);
 666
 667                                 if(show_progress)
 668                                 {
 669                                         cout<<count<<" of "<<total<<" targets built\033[1G";
 670                                         cout.flush();
 671                                 }
 672                         }
 673                         else if(actions.empty())
 674                                 finish=true;
 675                 }
 676                 else
 677                         Time::sleep(10*Time::msec);
 678
 679                 for(unsigned i=0; i<actions.size();)
 680                 {
 681                         int status=actions[i]->check();
 682                         if(status>=0)
 683                         {
 684                                 ++count;
 685
 686                                 delete actions[i];
 687                                 actions.erase(actions.begin()+i);
 688                                 if(status>0)
 689                                         fail=true;
 690                                 if(actions.empty() && fail)
 691                                         finish=true;
 692                         }
 693                         else
 694                                 ++i;
 695                 }
 696         }
 697
 698         if(show_progress)
 699                 cout<<"\033[K";
 700         if(fail)
 701                 cout<<"Build failed\n";
 702         else if(show_progress)
 703                 cout<<"Build complete\n";
 704
 705         return fail?1:0;
 706 }
 707
 708 /**
 709 Cleans buildable targets.  If clean is 1, cleans only this package.  If
 710 clean is 2 or greater, cleans all buildable packages.
 711 */
 712 int Builder::do_clean()
 713 {
 714         // Cleaning doesn't care about ordering, so a simpler method can be used
 715
 716         set<Target *> clean_tgts;
 717         TargetList queue;
 718         queue.push_back(get_target("cmdline"));
 719
 720         while(!queue.empty())
 721         {
 722                 Target *tgt=queue.front();
 723                 queue.erase(queue.begin());
 724
 725                 if(tgt->get_buildable() && (tgt->get_package()==main_pkg || clean>=2))
 726                         clean_tgts.insert(tgt);
 727
 728                 const TargetList &deps=tgt->get_depends();
 729                 for(TargetList::const_iterator i=deps.begin(); i!=deps.end(); ++i)
 730                         if(!clean_tgts.count(*i))
 731                                 queue.push_back(*i);
 732         }
 733
 734         for(set<Target *>::iterator i=clean_tgts.begin(); i!=clean_tgts.end(); ++i)
 735         {
 736                 Action *action=new Unlink(*this, **i);
 737                 while(action->check()<0);
 738                 delete action;
 739         }
 740
 741         return 0;
 742 }
 743
 744 /**
 745 Prints out information about the default package.
 746 */
 747 void Builder::package_help()
 748 {
 749         const Config &config=main_pkg->get_config();
 750         const Config::OptionMap &options=config.get_options();
 751
 752         cout<<"Required packages:\n  ";
 753         const PackageList &requires=main_pkg->get_requires();
 754         for(PackageList::const_iterator i=requires.begin(); i!=requires.end(); ++i)
 755         {
 756                 if(i!=requires.begin())
 757                         cout<<", ";
 758                 cout<<(*i)->get_name();
 759         }
 760         cout<<"\n\n";
 761         cout<<"Package configuration:\n";
 762         for(Config::OptionMap::const_iterator i=options.begin(); i!=options.end(); ++i)
 763         {
 764                 const Config::Option &opt=i->second;
 765                 cout<<"  "<<opt.name<<": "<<opt.descr<<" ("<<opt.value<<") ["<<opt.defv<<"]\n";
 766         }
 767 }
 768
 769 Application::RegApp<Builder> Builder::reg;
 770
 771
 772 Builder::Loader::Loader(Builder &b, const Path &s):
 773         bld(b),
 774         src(s)
 775 {
 776         add("architecture", &Loader::architecture);
 777         add("binary_package", &Loader::binpkg);
 778         add("profile", &Loader::profile);
 779         add("package", &Loader::package);
 780 }
 781
 782 void Builder::Loader::architecture(const string &n)
 783 {
 784         Architecture arch(bld, n);
 785         load_sub(arch);
 786         bld.archs.insert(ArchMap::value_type(n, arch));
 787 }
 788
 789 void Builder::Loader::binpkg(const string &n)
 790 {
 791         BinaryPackage *pkg=new BinaryPackage(bld, n);
 792         load_sub(*pkg);
 793         bld.packages.insert(PackageMap::value_type(n, pkg));
 794 }
 795
 796 void Builder::Loader::profile(const string &n)
 797 {
 798         StringMap prf;
 799         load_sub<ProfileLoader>(prf);
 800         bld.profile_tmpl.insert(ProfileTemplateMap::value_type(n, prf));
 801 }
 802
 803 void Builder::Loader::package(const string &n)
 804 {
 805         SourcePackage *pkg=new SourcePackage(bld, n, src);
 806         if(!bld.main_pkg)
 807                 bld.main_pkg=pkg;
 808
 809         load_sub(*pkg);
 810         bld.packages.insert(PackageMap::value_type(n, pkg));
 811 }
 812
 813
 814 Builder::ProfileLoader::ProfileLoader(StringMap &p):
 815         profile(p)
 816 {
 817         add("option", &ProfileLoader::option);
 818 }
 819
 820 void Builder::ProfileLoader::option(const string &o, const string &v)
 821 {
 822         profile.insert(StringMap::value_type(o, v));
 823 }