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/except.h>
  15 #include <msp/io/file.h>
  16 #include <msp/path/utils.h>
  17 #include <msp/strings/formatter.h>
  18 #include <msp/strings/regex.h>
  19 #include <msp/strings/utils.h>
  20 #include <msp/time/units.h>
  21 #include <msp/time/utils.h>
  22 #include "action.h"
  23 #include "analyzer.h"
  24 #include "binarypackage.h"
  25 #include "builder.h"
  26 #include "header.h"
  27 #include "install.h"
  28 #include "misc.h"
  29 #include "package.h"
  30 #include "pkgconfig.h"
  31 #include "sharedlibrary.h"
  32 #include "sourcepackage.h"
  33 #include "systemlibrary.h"
  34 #include "tarball.h"
  35 #include "unlink.h"
  36 #include "virtualtarget.h"
  37
  38 using namespace std;
  39 using namespace Msp;
  40
  41 Builder::Builder(int argc, char **argv):
  42         main_pkg(0),
  43         analyzer(0),
  44         build(false),
  45         clean(0),
  46         dry_run(false),
  47         help(false),
  48         verbose(1),
  49         show_progress(false),
  50         build_file("Build"),
  51         jobs(1),
  52         conf_all(false),
  53         conf_only(false),
  54         build_all(false),
  55         create_makefile(false),
  56         current_arch("native")
  57 {
  58         string   analyze_mode;
  59         string   work_dir;
  60         bool     full_paths=false;
  61         unsigned max_depth=5;
  62
  63         GetOpt getopt;
  64         getopt.add_option('a', "analyze",    analyze_mode, GetOpt::REQUIRED_ARG);
  65         getopt.add_option('b', "build",      build,        GetOpt::NO_ARG);
  66         getopt.add_option('c', "clean",      clean,        GetOpt::NO_ARG);
  67         getopt.add_option('f', "file",       build_file,   GetOpt::REQUIRED_ARG);
  68         getopt.add_option('h', "help",       help,         GetOpt::NO_ARG);
  69         getopt.add_option('j', "jobs",       jobs,         GetOpt::REQUIRED_ARG);
  70         getopt.add_option('n', "dry-run",    dry_run,      GetOpt::NO_ARG);
  71         getopt.add_option('v', "verbose",    verbose,      GetOpt::NO_ARG);
  72         getopt.add_option('A', "conf-all",   conf_all,     GetOpt::NO_ARG);
  73         getopt.add_option('B', "build-all",  build_all,    GetOpt::NO_ARG);
  74         getopt.add_option('C', "chdir",      work_dir,     GetOpt::REQUIRED_ARG);
  75         getopt.add_option('P', "progress",   show_progress, GetOpt::NO_ARG);
  76         getopt.add_option('W', "what-if",    what_if,      GetOpt::REQUIRED_ARG);
  77         getopt.add_option(     "arch",       current_arch, GetOpt::REQUIRED_ARG);
  78         getopt.add_option(     "conf-only",  conf_only,    GetOpt::NO_ARG);
  79         getopt.add_option(     "full-paths", full_paths,   GetOpt::NO_ARG);
  80         //getopt.add_option(     "makefile",   create_makefile, GetOpt::NO_ARG);
  81         getopt.add_option(     "max-depth",  max_depth,    GetOpt::REQUIRED_ARG);
  82         getopt.add_option(     "prefix",     prefix,       GetOpt::REQUIRED_ARG);
  83         getopt(argc, argv);
  84
  85         if(!analyze_mode.empty())
  86         {
  87                 analyzer=new Analyzer(*this);
  88
  89                 if(analyze_mode=="deps")
  90                         analyzer->set_mode(Analyzer::DEPS);
  91                 else if(analyze_mode=="alldeps")
  92                         analyzer->set_mode(Analyzer::ALLDEPS);
  93                 else if(analyze_mode=="rebuild")
  94                         analyzer->set_mode(Analyzer::REBUILD);
  95                 else if(analyze_mode=="rdeps")
  96                         analyzer->set_mode(Analyzer::RDEPS);
  97                 else
  98                         throw UsageError("Invalid analyze mode");
  99
 100                 analyzer->set_max_depth(max_depth);
 101                 analyzer->set_full_paths(full_paths);
 102         }
 103         else if(!clean && !create_makefile)
 104                 build=true;
 105
 106         const vector<string> &args=getopt.get_args();
 107         for(vector<string>::const_iterator i=args.begin(); i!=args.end(); ++i)
 108         {
 109                 unsigned equal=i->find('=');
 110                 if(equal!=string::npos)
 111                         cmdline_options.insert(StringMap::value_type(i->substr(0, equal), i->substr(equal+1)));
 112                 else
 113                         cmdline_targets.push_back(*i);
 114         }
 115
 116         if(cmdline_targets.empty())
 117                 cmdline_targets.push_back("default");
 118
 119         if(!work_dir.empty())
 120                 chdir(work_dir.c_str());
 121
 122         cwd=getcwd();
 123
 124         Architecture &native_arch=archs.insert(ArchMap::value_type("native", Architecture(*this, "native"))).first->second;
 125         native_arch.set_tool("CC",  "gcc");
 126         native_arch.set_tool("CXX", "g++");
 127         native_arch.set_tool("LD",  "gcc");
 128         native_arch.set_tool("LXX", "g++");
 129         native_arch.set_tool("AR",  "ar");
 130
 131         load_build_file((get_home_dir()/".builderrc").str());
 132
 133         if(prefix.empty())
 134         {
 135                 if(current_arch=="native")
 136                         prefix=(get_home_dir()/"local").str();
 137                 else
 138                         prefix=(get_home_dir()/"local"/current_arch).str();
 139         }
 140 }
 141
 142 /**
 143 Gets a package by name, possibly creating it.
 144
 145 @param   name  Package name
 146
 147 @return  Pointer to the package, or 0 if the package could not be located
 148 */
 149 Package *Builder::get_package(const string &name)
 150 {
 151         PackageMap::iterator i=packages.find(format("%s/%s", name, current_arch));
 152         if(i==packages.end())
 153                 i=packages.find(name);
 154         if(i!=packages.end())
 155                 return i->second;
 156
 157         // Try to get source directory with pkgconfig
 158         list<string> argv;
 159         argv.push_back("pkg-config");
 160         argv.push_back("--variable=source");
 161         argv.push_back(name);
 162         if(verbose>=4)
 163                 cout<<"Running "<<join(argv.begin(), argv.end())<<'\n';
 164         string srcdir=strip(run_command(argv));
 165
 166         PathList dirs;
 167         if(!srcdir.empty())
 168                 dirs.push_back(srcdir);
 169
 170         // Make some other guesses about the source directory
 171         dirs.push_back(cwd/name);
 172         dirs.push_back(cwd/".."/name);
 173         if(!name.compare(0, 3, "msp"))
 174         {
 175                 dirs.push_back(cwd/name.substr(3));
 176                 dirs.push_back(cwd/".."/name.substr(3));
 177         }
 178
 179         // Go through the candidate directories and look for a Build file
 180         for(PathList::iterator j=dirs.begin(); j!=dirs.end(); ++j)
 181                 if(!load_build_file(*j/"Build"))
 182                 {
 183                         i=packages.find(name);
 184                         if(i!=packages.end())
 185                                 return i->second;
 186                         break;
 187                 }
 188
 189         // Package source not found - create a binary package
 190         Package *pkg=BinaryPackage::from_pkgconfig(*this, name);
 191
 192         packages.insert(PackageMap::value_type(name, pkg));
 193
 194         if(!pkg)
 195                 problem(name, "not found");
 196
 197         return pkg;
 198 }
 199
 200 /**
 201 Returns the target with the given name, or 0 if no such target exists.
 202 */
 203 Target *Builder::get_target(const string &n) const
 204 {
 205         TargetMap::const_iterator i=targets.find(n);
 206         if(i!=targets.end())
 207                 return i->second;
 208         return 0;
 209 }
 210
 211 /**
 212 Tries to locate a header included from a given location and with a given include
 213 path.  Considers known targets as well as existing files.  If a matching target
 214 is not found but a file exists, a new SystemHeader target will be created and
 215 returned.
 216 */
 217 Target *Builder::get_header(const string &include, const string &from, const list<string> &path)
 218 {
 219         string hash(8, 0);
 220         update_hash(hash, from);
 221         for(list<string>::const_iterator i=path.begin(); i!=path.end(); ++i)
 222                 update_hash(hash, *i);
 223
 224         string id=hash+include;
 225         TargetMap::iterator i=includes.find(id);
 226         if(i!=includes.end())
 227                 return i->second;
 228
 229         static string cxx_ver;
 230         if(cxx_ver.empty())
 231         {
 232                 StringList argv;
 233                 argv.push_back(get_current_arch().get_tool("CXX"));
 234                 argv.push_back("--version");
 235                 cxx_ver=Regex("[0-9]\\.[0-9.]+").match(run_command(argv))[0].str;
 236                 while(!cxx_ver.empty() && !exists(Path("/usr/include/c++")/cxx_ver))
 237                 {
 238                         unsigned dot=cxx_ver.rfind('.');
 239                         if(dot==string::npos)
 240                                 break;
 241                         cxx_ver.erase(dot);
 242                 }
 243                 if(verbose>=5)
 244                         cout<<"C++ version is "<<cxx_ver<<'\n';
 245         }
 246
 247         string fn=include.substr(1);
 248         if(verbose>=5)
 249                 cout<<"Looking for include "<<fn<<" with path "<<join(path.begin(), path.end())<<'\n';
 250
 251         StringList syspath;
 252         if(current_arch=="native")
 253                 syspath.push_back("/usr/include");
 254         else
 255                 syspath.push_back("/usr/"+get_architecture(current_arch).get_prefix()+"/include");
 256         syspath.push_back((Path("/usr/include/c++/")/cxx_ver/fn).str());
 257
 258         Target *tgt=0;
 259         if(include[0]=='\"')
 260                 tgt=get_header(Path(from)/fn);
 261         for(list<string>::const_iterator j=path.begin(); (!tgt && j!=path.end()); ++j)
 262                 tgt=get_header(cwd/ *j/fn);
 263         for(list<string>::const_iterator j=syspath.begin(); (!tgt && j!=syspath.end()); ++j)
 264                 tgt=get_header(Path(*j)/fn);
 265
 266         includes.insert(TargetMap::value_type(id, tgt));
 267
 268         return tgt;
 269 }
 270
 271 /**
 272 Tries to locate a library with the given library path.  Considers known targets
 273 as well as existing files.  If a matching target is not found but a file exists,
 274 a new SystemLibrary target will be created and returned.
 275
 276 @param   lib   Name of the library to get (without "lib" prefix or extension)
 277 @param   path  List of paths to search for the library
 278 @param   mode  Shared / static mode
 279
 280 @return  Some kind of library target, if a match was found
 281 */
 282 Target *Builder::get_library(const string &lib, const list<string> &path, LibMode mode)
 283 {
 284         string hash(8, 0);
 285         for(list<string>::const_iterator i=path.begin(); i!=path.end(); ++i)
 286                 update_hash(hash, *i);
 287
 288         //XXX Incorporate mode into id
 289         string id=hash+lib;
 290         TargetMap::iterator i=libraries.find(id);
 291         if(i!=libraries.end())
 292                 return i->second;
 293
 294         StringList syspath;
 295         if(current_arch=="native")
 296         {
 297                 syspath.push_back("/lib");
 298                 syspath.push_back("/usr/lib");
 299         }
 300         else
 301                 syspath.push_back("/usr/"+get_current_arch().get_prefix()+"/lib");
 302
 303         if(verbose>=5)
 304                 cout<<"Looking for library "<<lib<<" with path "<<join(path.begin(), path.end())<<'\n';
 305
 306         Target *tgt=0;
 307         for(StringList::const_iterator j=path.begin(); (!tgt && j!=path.end()); ++j)
 308                 tgt=get_library(lib, cwd/ *j, mode);
 309         for(StringList::iterator j=syspath.begin(); (!tgt && j!=syspath.end()); ++j)
 310                 tgt=get_library(lib, *j, mode);
 311
 312         libraries.insert(TargetMap::value_type(id, tgt));
 313
 314         return tgt;
 315 }
 316
 317 const Architecture &Builder::get_architecture(const string &arch) const
 318 {
 319         ArchMap::const_iterator i=archs.find(arch);
 320         if(i==archs.end())
 321                 throw KeyError("Unknown architecture", arch);
 322
 323         return i->second;
 324 }
 325
 326 const Architecture &Builder::get_current_arch() const
 327 {
 328         return get_architecture(current_arch);
 329 }
 330
 331 void Builder::apply_profile_template(Config &config, const string &pt) const
 332 {
 333         vector<string> parts=split(pt, '-');
 334
 335         for(vector<string>::iterator i=parts.begin(); i!=parts.end(); ++i)
 336         {
 337                 ProfileTemplateMap::const_iterator j=profile_tmpl.find(*i);
 338                 if(j==profile_tmpl.end())
 339                         continue;
 340
 341                 config.update(j->second);
 342         }
 343 }
 344
 345 void Builder::problem(const string &p, const string &d)
 346 {
 347         problems.push_back(Problem(p, d));
 348 }
 349
 350 /**
 351 Adds a target to both the target map and the new target queue.  Called from
 352 Target constructor.
 353 */
 354 void Builder::add_target(Target *t)
 355 {
 356         targets.insert(TargetMap::value_type(t->get_name(), t));
 357         new_tgts.push_back(t);
 358 }
 359
 360 int Builder::main()
 361 {
 362         if(load_build_file(cwd/build_file))
 363         {
 364                 cerr<<"No build info here.\n";
 365                 return 1;
 366         }
 367
 368         main_pkg->configure(cmdline_options, conf_all?2:1);
 369
 370         if(help)
 371         {
 372                 usage(0, "builder", false);
 373                 cout<<'\n';
 374                 package_help();
 375                 return 0;
 376         }
 377
 378         if(!conf_only && create_targets())
 379                 return 1;
 380
 381         PackageList all_reqs=main_pkg->collect_requires();
 382
 383         if(conf_only)
 384                 return 0;
 385
 386         cout<<all_reqs.size()<<" active packages, "<<targets.size()<<" targets\n";
 387         if(verbose>=2)
 388         {
 389                 for(PackageList::const_iterator i=all_reqs.begin(); i!=all_reqs.end(); ++i)
 390                 {
 391                         cout<<' '<<(*i)->get_name();
 392                         if(dynamic_cast<SourcePackage *>(*i))
 393                                 cout<<'*';
 394                         unsigned count=0;
 395                         unsigned ood_count=0;
 396                         for(TargetMap::iterator j=targets.begin(); j!=targets.end(); ++j)
 397                                 if(j->second->get_package()==*i)
 398                                 {
 399                                         ++count;
 400                                         if(j->second->get_rebuild())
 401                                                 ++ood_count;
 402                                 }
 403                         if(count)
 404                         {
 405                                 cout<<" ("<<count<<" targets";
 406                                 if(ood_count)
 407                                         cout<<", "<<ood_count<<" out-of-date";
 408                                 cout<<')';
 409                         }
 410                         cout<<'\n';
 411                 }
 412         }
 413
 414         if(analyzer)
 415                 analyzer->analyze();
 416
 417         if(!problems.empty())
 418         {
 419                 cerr<<"The following problems were detected:\n";
 420                 for(ProblemList::iterator i=problems.begin(); i!=problems.end(); ++i)
 421                         cerr<<"  "<<i->package<<": "<<i->descr<<'\n';
 422                 cerr<<"Please fix them and try again.\n";
 423                 return 1;
 424         }
 425
 426         //if(create_makefile
 427
 428         if(clean)
 429                 exit_code=do_clean();
 430         else if(build)
 431                 exit_code=do_build();
 432
 433         return exit_code;
 434 }
 435
 436 Builder::~Builder()
 437 {
 438         for(PackageMap::iterator i=packages.begin(); i!=packages.end(); ++i)
 439                 delete i->second;
 440         for(TargetMap::iterator i=targets.begin(); i!=targets.end(); ++i)
 441                 delete i->second;
 442         delete analyzer;
 443 }
 444
 445 void Builder::usage(const char *reason, const char *argv0, bool brief)
 446 {
 447         if(reason)
 448                 cerr<<reason<<'\n';
 449
 450         if(brief)
 451                 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> ...]";
 452         else
 453         {
 454                 cerr<<
 455                         "Usage: "<<argv0<<" [options] [<target> ...]\n"
 456                         "\n"
 457                         "Options:\n"
 458                         "  -a, --analyze MODE  Perform analysis.  MODE can be deps, alldeps or rebuild.\n"
 459                         "  -b, --build         Perform build even if doing analysis.\n"
 460                         "  -c, --clean         Clean buildable targets.\n"
 461                         "  -f, --file FILE     Read info from FILE instead of Build.\n"
 462                         "  -h, --help          Print this message.\n"
 463                         "  -j, --jobs NUM      Run NUM commands at once, whenever possible.\n"
 464                         "  -n, --dry-run       Don't actually do anything, only show what would be done.\n"
 465                         "  -v, --verbose       Print more information about what's going on.\n"
 466                         "  -A, --conf-all      Apply configuration to all packages.\n"
 467                         "  -B, --build-all     Build all targets unconditionally.\n"
 468                         "  -C, --chdir DIR     Change to DIR before doing anything else.\n"
 469                         "  -P, --progress      Display progress while building.\n"
 470                         "  -W, --what-if FILE  Pretend that FILE has changed.\n"
 471                         "  --conf-only         Stop after configuring packages.\n"
 472                         "  --full-paths        Output full paths in analysis.\n"
 473                         //"  --makefile          Create a makefile for this package.\n"
 474                         "  --max-depth NUM     Maximum depth to show in analysis.\n";
 475         }
 476 }
 477
 478 /**
 479 Loads the given build file.
 480
 481 @param   fn  Path to the file
 482
 483 @return  0 on success, -1 if the file could not be opened
 484 */
 485 int Builder::load_build_file(const Path &fn)
 486 {
 487         try
 488         {
 489                 IO::File inf(fn.str());
 490                 IO::Buffered in(inf);
 491
 492                 if(verbose>=3)
 493                         cout<<"Reading "<<fn<<'\n';
 494
 495                 DataFile::Parser parser(in, fn.str());
 496                 Loader loader(*this, fn.subpath(0, fn.size()-1));
 497                 loader.load(parser);
 498         }
 499         catch(const IO::FileNotFound &)
 500         {
 501                 return -1;
 502         }
 503
 504         return 0;
 505 }
 506
 507 /**
 508 Creates targets for all packages and prepares them for building.
 509
 510 @return  0 if everything went ok, -1 if something bad happened and a build
 511          shouldn't be attempted
 512 */
 513 int Builder::create_targets()
 514 {
 515         Target *world=new VirtualTarget(*this, "world");
 516
 517         Target *def_tgt=new VirtualTarget(*this, "default");
 518         world->add_depend(def_tgt);
 519
 520         Target *install=new VirtualTarget(*this, "install");
 521         world->add_depend(install);
 522
 523         Target *tarballs=new VirtualTarget(*this, "tarballs");
 524         world->add_depend(tarballs);
 525
 526         PackageList all_reqs=main_pkg->collect_requires();
 527         for(PackageList::iterator i=all_reqs.begin(); i!=all_reqs.end(); ++i)
 528         {
 529                 SourcePackage *spkg=dynamic_cast<SourcePackage *>(*i);
 530                 if(!spkg)
 531                         continue;
 532
 533                 const ComponentList &components=spkg->get_components();
 534                 for(ComponentList::const_iterator j=components.begin(); j!=components.end(); ++j)
 535                         j->create_targets();
 536
 537                 if(spkg->get_install_flags()&(SourcePackage::LIB|SourcePackage::INCLUDE))
 538                 {
 539                         PkgConfig *pc=new PkgConfig(*this, *spkg);
 540                         install->add_depend(new Install(*this, *spkg, *pc));
 541                 }
 542
 543                 tarballs->add_depend(new TarBall(*this, *spkg));
 544         }
 545
 546         // Find dependencies until no new targets are created
 547         while(!new_tgts.empty())
 548         {
 549                 Target *tgt=new_tgts.front();
 550                 new_tgts.erase(new_tgts.begin());
 551                 tgt->find_depends();
 552                 if(!tgt->get_depends_ready())
 553                         new_tgts.push_back(tgt);
 554         }
 555
 556         // Apply what-ifs
 557         for(StringList::iterator i=what_if.begin(); i!=what_if.end(); ++i)
 558         {
 559                 Target *tgt=get_target((cwd/ *i).str());
 560                 if(!tgt)
 561                 {
 562                         cerr<<"Unknown what-if target "<<*i<<'\n';
 563                         return -1;
 564                 }
 565                 tgt->touch();
 566         }
 567
 568         // Make the cmdline target depend on all targets mentioned on the command line
 569         Target *cmdline=new VirtualTarget(*this, "cmdline");
 570         bool build_world=false;
 571         for(list<string>::iterator i=cmdline_targets.begin(); i!=cmdline_targets.end(); ++i)
 572         {
 573                 Target *tgt=get_target(*i);
 574                 if(!tgt)
 575                         tgt=get_target((cwd/ *i).str());
 576                 if(!tgt)
 577                 {
 578                         cerr<<"I don't know anything about "<<*i<<'\n';
 579                         return -1;
 580                 }
 581                 if(tgt==world)
 582                         build_world=true;
 583                 cmdline->add_depend(tgt);
 584         }
 585
 586         /* If world is to be built, prepare cmdline.  If not, add cmdline to world
 587            and prepare world.  I don't really like this, but it keeps the graph
 588            acyclic. */
 589         if(build_world)
 590                 cmdline->prepare();
 591         else
 592         {
 593                 world->add_depend(cmdline);
 594                 world->prepare();
 595         }
 596
 597         for(PackageMap::iterator i=packages.begin(); i!=packages.end(); ++i)
 598                 if(SourcePackage *spkg=dynamic_cast<SourcePackage *>(i->second))
 599                         spkg->get_deps_cache().save();
 600
 601         return 0;
 602 }
 603
 604 /**
 605 Check if a header exists, either as a target or a file.  Either an existing
 606 target or a new SystemHeader target will be returned.
 607 */
 608 Target *Builder::get_header(const Msp::Path &fn)
 609 {
 610         Target *tgt=get_target(fn.str());
 611         if(tgt) return tgt;
 612
 613         if(exists(fn))
 614         {
 615                 tgt=new SystemHeader(*this, fn.str());
 616                 return tgt;
 617         }
 618         return 0;
 619 }
 620
 621 Target *Builder::get_library(const string &lib, const Path &path, LibMode mode)
 622 {
 623         // Populate a list of candidate filenames
 624         StringList candidates;
 625
 626         if(mode!=ALL_STATIC)
 627         {
 628                 if(current_arch=="win32")
 629                 {
 630                         candidates.push_back("lib"+lib+".dll");
 631                         candidates.push_back(lib+".dll");
 632                 }
 633                 else
 634                         candidates.push_back("lib"+lib+".so");
 635         }
 636
 637         /* Static libraries are always considered, since sometimes shared versions
 638         may not be available */
 639         candidates.push_back("lib"+lib+".a");
 640         if(current_arch=="win32")
 641                 candidates.push_back("lib"+lib+".dll.a");
 642
 643         for(StringList::iterator i=candidates.begin(); i!=candidates.end(); ++i)
 644         {
 645                 string full=(path/ *i).str();
 646                 Target *tgt=get_target(full);
 647
 648                 if(tgt)
 649                 {
 650                         Target *real_tgt=tgt;
 651                         if(dynamic_cast<Install *>(tgt))
 652                                 real_tgt=real_tgt->get_depends().front();
 653
 654                         /* Ignore dynamic libraries from local packages unless library mode is
 655                         DYNAMIC */
 656                         if(dynamic_cast<SharedLibrary *>(real_tgt) && mode!=DYNAMIC)
 657                                 continue;
 658                         else if(tgt)
 659                                 return tgt;
 660                 }
 661                 else if(exists(full))
 662                 {
 663                         tgt=new SystemLibrary(*this, full);
 664                         return tgt;
 665                 }
 666         }
 667
 668         return 0;
 669 }
 670
 671 /**
 672 Updates a hash with a string.  This is used from get_header and get_library.
 673 */
 674 void Builder::update_hash(string &hash, const string &value)
 675 {
 676         for(unsigned i=0; i<value.size(); ++i)
 677                 hash[i%hash.size()]^=value[i];
 678 }
 679
 680 /**
 681 This function supervises the build process, starting new actions when slots
 682 become available.
 683 */
 684 int Builder::do_build()
 685 {
 686         Target *cmdline=get_target("cmdline");
 687
 688         unsigned total=cmdline->count_rebuild();
 689         if(!total)
 690         {
 691                 cout<<"Already up to date\n";
 692                 return 0;
 693         }
 694         cout<<"Will build "<<total<<" target(s)\n";
 695
 696         vector<Action *> actions;
 697
 698         unsigned count=0;
 699
 700         bool fail=false;
 701         bool finish=false;
 702
 703         while(!finish)
 704         {
 705                 if(actions.size()<jobs && !fail)
 706                 {
 707                         Target *tgt=cmdline->get_buildable_target();
 708                         if(tgt)
 709                         {
 710                                 Action *action=tgt->build();
 711                                 if(action)
 712                                         actions.push_back(action);
 713
 714                                 if(show_progress)
 715                                 {
 716                                         cout<<count<<" of "<<total<<" targets built\033[1G";
 717                                         cout.flush();
 718                                 }
 719                         }
 720                         else if(actions.empty())
 721                                 finish=true;
 722                 }
 723                 else
 724                         Time::sleep(10*Time::msec);
 725
 726                 for(unsigned i=0; i<actions.size();)
 727                 {
 728                         int status=actions[i]->check();
 729                         if(status>=0)
 730                         {
 731                                 ++count;
 732
 733                                 delete actions[i];
 734                                 actions.erase(actions.begin()+i);
 735                                 if(status>0)
 736                                         fail=true;
 737                                 if(actions.empty() && fail)
 738                                         finish=true;
 739                         }
 740                         else
 741                                 ++i;
 742                 }
 743         }
 744
 745         if(show_progress)
 746                 cout<<"\033[K";
 747         if(fail)
 748                 cout<<"Build failed\n";
 749         else if(show_progress)
 750                 cout<<"Build complete\n";
 751
 752         return fail?1:0;
 753 }
 754
 755 /**
 756 Cleans buildable targets.  If clean is 1, cleans only this package.  If
 757 clean is 2 or greater, cleans all buildable packages.
 758 */
 759 int Builder::do_clean()
 760 {
 761         // Cleaning doesn't care about ordering, so a simpler method can be used
 762
 763         set<Target *> clean_tgts;
 764         TargetList queue;
 765         queue.push_back(get_target("cmdline"));
 766
 767         while(!queue.empty())
 768         {
 769                 Target *tgt=queue.front();
 770                 queue.erase(queue.begin());
 771
 772                 if(tgt->get_buildable() && (tgt->get_package()==main_pkg || clean>=2))
 773                         clean_tgts.insert(tgt);
 774
 775                 const TargetList &deps=tgt->get_depends();
 776                 for(TargetList::const_iterator i=deps.begin(); i!=deps.end(); ++i)
 777                         if(!clean_tgts.count(*i))
 778                                 queue.push_back(*i);
 779         }
 780
 781         for(set<Target *>::iterator i=clean_tgts.begin(); i!=clean_tgts.end(); ++i)
 782         {
 783                 Action *action=new Unlink(*this, **i);
 784                 while(action->check()<0);
 785                 delete action;
 786         }
 787
 788         return 0;
 789 }
 790
 791 /**
 792 Prints out information about the default package.
 793 */
 794 void Builder::package_help()
 795 {
 796         const Config &config=main_pkg->get_config();
 797         const Config::OptionMap &options=config.get_options();
 798
 799         cout<<"Required packages:\n  ";
 800         const PackageList &requires=main_pkg->get_requires();
 801         for(PackageList::const_iterator i=requires.begin(); i!=requires.end(); ++i)
 802         {
 803                 if(i!=requires.begin())
 804                         cout<<", ";
 805                 cout<<(*i)->get_name();
 806         }
 807         cout<<"\n\n";
 808         cout<<"Package configuration:\n";
 809         for(Config::OptionMap::const_iterator i=options.begin(); i!=options.end(); ++i)
 810         {
 811                 const Config::Option &opt=i->second;
 812                 cout<<"  "<<opt.name<<": "<<opt.descr<<" ("<<opt.value<<") ["<<opt.defv<<"]\n";
 813         }
 814 }
 815
 816 Application::RegApp<Builder> Builder::reg;
 817
 818
 819 Builder::Loader::Loader(Builder &b, const Path &s):
 820         bld(b),
 821         src(s)
 822 {
 823         add("architecture", &Loader::architecture);
 824         add("binary_package", &Loader::binpkg);
 825         add("profile", &Loader::profile);
 826         add("package", &Loader::package);
 827 }
 828
 829 void Builder::Loader::architecture(const string &n)
 830 {
 831         Architecture arch(bld, n);
 832         load_sub(arch);
 833         bld.archs.insert(ArchMap::value_type(n, arch));
 834 }
 835
 836 void Builder::Loader::binpkg(const string &n)
 837 {
 838         BinaryPackage *pkg=new BinaryPackage(bld, n);
 839         load_sub(*pkg);
 840         bld.packages.insert(PackageMap::value_type(n, pkg));
 841 }
 842
 843 void Builder::Loader::profile(const string &n)
 844 {
 845         StringMap prf;
 846         load_sub<ProfileLoader>(prf);
 847         bld.profile_tmpl.insert(ProfileTemplateMap::value_type(n, prf));
 848 }
 849
 850 void Builder::Loader::package(const string &n)
 851 {
 852         SourcePackage *pkg=new SourcePackage(bld, n, src);
 853         if(!bld.main_pkg)
 854                 bld.main_pkg=pkg;
 855
 856         load_sub(*pkg);
 857         bld.packages.insert(PackageMap::value_type(n, pkg));
 858 }
 859
 860
 861 Builder::ProfileLoader::ProfileLoader(StringMap &p):
 862         profile(p)
 863 {
 864         add("option", &ProfileLoader::option);
 865 }
 866
 867 void Builder::ProfileLoader::option(const string &o, const string &v)
 868 {
 869         profile.insert(StringMap::value_type(o, v));
 870 }