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         string id=hash+string(1, mode)+lib;
 289         TargetMap::iterator i=libraries.find(id);
 290         if(i!=libraries.end())
 291                 return i->second;
 292
 293         StringList syspath;
 294         if(current_arch=="native")
 295         {
 296                 syspath.push_back("/lib");
 297                 syspath.push_back("/usr/lib");
 298         }
 299         else
 300                 syspath.push_back("/usr/"+get_current_arch().get_prefix()+"/lib");
 301
 302         if(verbose>=5)
 303                 cout<<"Looking for library "<<lib<<" with path "<<join(path.begin(), path.end())<<'\n';
 304
 305         Target *tgt=0;
 306         for(StringList::const_iterator j=path.begin(); (!tgt && j!=path.end()); ++j)
 307                 tgt=get_library(lib, cwd/ *j, mode);
 308         for(StringList::iterator j=syspath.begin(); (!tgt && j!=syspath.end()); ++j)
 309                 tgt=get_library(lib, *j, mode);
 310
 311         libraries.insert(TargetMap::value_type(id, tgt));
 312
 313         return tgt;
 314 }
 315
 316 const Architecture &Builder::get_architecture(const string &arch) const
 317 {
 318         ArchMap::const_iterator i=archs.find(arch);
 319         if(i==archs.end())
 320                 throw KeyError("Unknown architecture", arch);
 321
 322         return i->second;
 323 }
 324
 325 const Architecture &Builder::get_current_arch() const
 326 {
 327         return get_architecture(current_arch);
 328 }
 329
 330 void Builder::apply_profile_template(Config &config, const string &pt) const
 331 {
 332         vector<string> parts=split(pt, '-');
 333
 334         for(vector<string>::iterator i=parts.begin(); i!=parts.end(); ++i)
 335         {
 336                 ProfileTemplateMap::const_iterator j=profile_tmpl.find(*i);
 337                 if(j==profile_tmpl.end())
 338                         continue;
 339
 340                 config.update(j->second);
 341         }
 342 }
 343
 344 void Builder::problem(const string &p, const string &d)
 345 {
 346         problems.push_back(Problem(p, d));
 347 }
 348
 349 /**
 350 Adds a target to both the target map and the new target queue.  Called from
 351 Target constructor.
 352 */
 353 void Builder::add_target(Target *t)
 354 {
 355         targets.insert(TargetMap::value_type(t->get_name(), t));
 356         new_tgts.push_back(t);
 357 }
 358
 359 int Builder::main()
 360 {
 361         if(load_build_file(cwd/build_file))
 362         {
 363                 cerr<<"No build info here.\n";
 364                 return 1;
 365         }
 366
 367         main_pkg->configure(cmdline_options, conf_all?2:1);
 368
 369         if(help)
 370         {
 371                 usage(0, "builder", false);
 372                 cout<<'\n';
 373                 package_help();
 374                 return 0;
 375         }
 376
 377         if(!conf_only && create_targets())
 378                 return 1;
 379
 380         PackageList all_reqs=main_pkg->collect_requires();
 381
 382         if(conf_only)
 383                 return 0;
 384
 385         cout<<all_reqs.size()<<" active packages, "<<targets.size()<<" targets\n";
 386         if(verbose>=2)
 387         {
 388                 for(PackageList::const_iterator i=all_reqs.begin(); i!=all_reqs.end(); ++i)
 389                 {
 390                         cout<<' '<<(*i)->get_name();
 391                         if(dynamic_cast<SourcePackage *>(*i))
 392                                 cout<<'*';
 393                         unsigned count=0;
 394                         unsigned ood_count=0;
 395                         for(TargetMap::iterator j=targets.begin(); j!=targets.end(); ++j)
 396                                 if(j->second->get_package()==*i)
 397                                 {
 398                                         ++count;
 399                                         if(j->second->get_rebuild())
 400                                                 ++ood_count;
 401                                 }
 402                         if(count)
 403                         {
 404                                 cout<<" ("<<count<<" targets";
 405                                 if(ood_count)
 406                                         cout<<", "<<ood_count<<" out-of-date";
 407                                 cout<<')';
 408                         }
 409                         cout<<'\n';
 410                 }
 411         }
 412
 413         if(analyzer)
 414                 analyzer->analyze();
 415
 416         if(!problems.empty())
 417         {
 418                 cerr<<"The following problems were detected:\n";
 419                 for(ProblemList::iterator i=problems.begin(); i!=problems.end(); ++i)
 420                         cerr<<"  "<<i->package<<": "<<i->descr<<'\n';
 421                 cerr<<"Please fix them and try again.\n";
 422                 return 1;
 423         }
 424
 425         //if(create_makefile
 426
 427         if(clean)
 428                 exit_code=do_clean();
 429         else if(build)
 430                 exit_code=do_build();
 431
 432         return exit_code;
 433 }
 434
 435 Builder::~Builder()
 436 {
 437         for(PackageMap::iterator i=packages.begin(); i!=packages.end(); ++i)
 438                 delete i->second;
 439         for(TargetMap::iterator i=targets.begin(); i!=targets.end(); ++i)
 440                 delete i->second;
 441         delete analyzer;
 442 }
 443
 444 void Builder::usage(const char *reason, const char *argv0, bool brief)
 445 {
 446         if(reason)
 447                 cerr<<reason<<'\n';
 448
 449         if(brief)
 450                 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> ...]";
 451         else
 452         {
 453                 cerr<<
 454                         "Usage: "<<argv0<<" [options] [<target> ...]\n"
 455                         "\n"
 456                         "Options:\n"
 457                         "  -a, --analyze MODE  Perform analysis.  MODE can be deps, alldeps or rebuild.\n"
 458                         "  -b, --build         Perform build even if doing analysis.\n"
 459                         "  -c, --clean         Clean buildable targets.\n"
 460                         "  -f, --file FILE     Read info from FILE instead of Build.\n"
 461                         "  -h, --help          Print this message.\n"
 462                         "  -j, --jobs NUM      Run NUM commands at once, whenever possible.\n"
 463                         "  -n, --dry-run       Don't actually do anything, only show what would be done.\n"
 464                         "  -v, --verbose       Print more information about what's going on.\n"
 465                         "  -A, --conf-all      Apply configuration to all packages.\n"
 466                         "  -B, --build-all     Build all targets unconditionally.\n"
 467                         "  -C, --chdir DIR     Change to DIR before doing anything else.\n"
 468                         "  -P, --progress      Display progress while building.\n"
 469                         "  -W, --what-if FILE  Pretend that FILE has changed.\n"
 470                         "  --conf-only         Stop after configuring packages.\n"
 471                         "  --full-paths        Output full paths in analysis.\n"
 472                         //"  --makefile          Create a makefile for this package.\n"
 473                         "  --max-depth NUM     Maximum depth to show in analysis.\n";
 474         }
 475 }
 476
 477 /**
 478 Loads the given build file.
 479
 480 @param   fn  Path to the file
 481
 482 @return  0 on success, -1 if the file could not be opened
 483 */
 484 int Builder::load_build_file(const Path &fn)
 485 {
 486         try
 487         {
 488                 IO::File inf(fn.str());
 489                 IO::Buffered in(inf);
 490
 491                 if(verbose>=3)
 492                         cout<<"Reading "<<fn<<'\n';
 493
 494                 DataFile::Parser parser(in, fn.str());
 495                 Loader loader(*this, fn.subpath(0, fn.size()-1));
 496                 loader.load(parser);
 497         }
 498         catch(const IO::FileNotFound &)
 499         {
 500                 return -1;
 501         }
 502
 503         return 0;
 504 }
 505
 506 /**
 507 Creates targets for all packages and prepares them for building.
 508
 509 @return  0 if everything went ok, -1 if something bad happened and a build
 510          shouldn't be attempted
 511 */
 512 int Builder::create_targets()
 513 {
 514         Target *world=new VirtualTarget(*this, "world");
 515
 516         Target *def_tgt=new VirtualTarget(*this, "default");
 517         world->add_depend(def_tgt);
 518
 519         Target *install=new VirtualTarget(*this, "install");
 520         world->add_depend(install);
 521
 522         Target *tarballs=new VirtualTarget(*this, "tarballs");
 523         world->add_depend(tarballs);
 524
 525         PackageList all_reqs=main_pkg->collect_requires();
 526         for(PackageList::iterator i=all_reqs.begin(); i!=all_reqs.end(); ++i)
 527         {
 528                 SourcePackage *spkg=dynamic_cast<SourcePackage *>(*i);
 529                 if(!spkg)
 530                         continue;
 531
 532                 const ComponentList &components=spkg->get_components();
 533                 for(ComponentList::const_iterator j=components.begin(); j!=components.end(); ++j)
 534                         j->create_targets();
 535
 536                 if(spkg->get_install_flags()&(SourcePackage::LIB|SourcePackage::INCLUDE))
 537                 {
 538                         PkgConfig *pc=new PkgConfig(*this, *spkg);
 539                         install->add_depend(new Install(*this, *spkg, *pc));
 540                 }
 541
 542                 tarballs->add_depend(new TarBall(*this, *spkg));
 543         }
 544
 545         // Find dependencies until no new targets are created
 546         while(!new_tgts.empty())
 547         {
 548                 Target *tgt=new_tgts.front();
 549                 new_tgts.erase(new_tgts.begin());
 550                 tgt->find_depends();
 551                 if(!tgt->get_depends_ready())
 552                         new_tgts.push_back(tgt);
 553         }
 554
 555         // Apply what-ifs
 556         for(StringList::iterator i=what_if.begin(); i!=what_if.end(); ++i)
 557         {
 558                 Target *tgt=get_target((cwd/ *i).str());
 559                 if(!tgt)
 560                 {
 561                         cerr<<"Unknown what-if target "<<*i<<'\n';
 562                         return -1;
 563                 }
 564                 tgt->touch();
 565         }
 566
 567         // Make the cmdline target depend on all targets mentioned on the command line
 568         Target *cmdline=new VirtualTarget(*this, "cmdline");
 569         bool build_world=false;
 570         for(list<string>::iterator i=cmdline_targets.begin(); i!=cmdline_targets.end(); ++i)
 571         {
 572                 Target *tgt=get_target(*i);
 573                 if(!tgt)
 574                         tgt=get_target((cwd/ *i).str());
 575                 if(!tgt)
 576                 {
 577                         cerr<<"I don't know anything about "<<*i<<'\n';
 578                         return -1;
 579                 }
 580                 if(tgt==world)
 581                         build_world=true;
 582                 cmdline->add_depend(tgt);
 583         }
 584
 585         /* If world is to be built, prepare cmdline.  If not, add cmdline to world
 586            and prepare world.  I don't really like this, but it keeps the graph
 587            acyclic. */
 588         if(build_world)
 589                 cmdline->prepare();
 590         else
 591         {
 592                 world->add_depend(cmdline);
 593                 world->prepare();
 594         }
 595
 596         for(PackageMap::iterator i=packages.begin(); i!=packages.end(); ++i)
 597                 if(SourcePackage *spkg=dynamic_cast<SourcePackage *>(i->second))
 598                         spkg->get_deps_cache().save();
 599
 600         return 0;
 601 }
 602
 603 /**
 604 Check if a header exists, either as a target or a file.  Either an existing
 605 target or a new SystemHeader target will be returned.
 606 */
 607 Target *Builder::get_header(const Msp::Path &fn)
 608 {
 609         Target *tgt=get_target(fn.str());
 610         if(tgt) return tgt;
 611
 612         if(exists(fn))
 613         {
 614                 tgt=new SystemHeader(*this, fn.str());
 615                 return tgt;
 616         }
 617         return 0;
 618 }
 619
 620 Target *Builder::get_library(const string &lib, const Path &path, LibMode mode)
 621 {
 622         // Populate a list of candidate filenames
 623         StringList candidates;
 624
 625         if(mode!=ALL_STATIC)
 626         {
 627                 if(current_arch=="win32")
 628                 {
 629                         candidates.push_back("lib"+lib+".dll");
 630                         candidates.push_back(lib+".dll");
 631                 }
 632                 else
 633                         candidates.push_back("lib"+lib+".so");
 634         }
 635
 636         /* Static libraries are always considered, since sometimes shared versions
 637         may not be available */
 638         candidates.push_back("lib"+lib+".a");
 639         if(current_arch=="win32")
 640                 candidates.push_back("lib"+lib+".dll.a");
 641
 642         for(StringList::iterator i=candidates.begin(); i!=candidates.end(); ++i)
 643         {
 644                 string full=(path/ *i).str();
 645                 Target *tgt=get_target(full);
 646
 647                 if(tgt)
 648                 {
 649                         Target *real_tgt=tgt;
 650                         if(dynamic_cast<Install *>(tgt))
 651                                 real_tgt=real_tgt->get_depends().front();
 652
 653                         /* Ignore dynamic libraries from local packages unless library mode is
 654                         DYNAMIC */
 655                         if(dynamic_cast<SharedLibrary *>(real_tgt) && mode!=DYNAMIC)
 656                                 continue;
 657                         else if(tgt)
 658                                 return tgt;
 659                 }
 660                 else if(exists(full))
 661                 {
 662                         tgt=new SystemLibrary(*this, full);
 663                         return tgt;
 664                 }
 665         }
 666
 667         return 0;
 668 }
 669
 670 /**
 671 Updates a hash with a string.  This is used from get_header and get_library.
 672 */
 673 void Builder::update_hash(string &hash, const string &value)
 674 {
 675         for(unsigned i=0; i<value.size(); ++i)
 676                 hash[i%hash.size()]^=value[i];
 677 }
 678
 679 /**
 680 This function supervises the build process, starting new actions when slots
 681 become available.
 682 */
 683 int Builder::do_build()
 684 {
 685         Target *cmdline=get_target("cmdline");
 686
 687         unsigned total=cmdline->count_rebuild();
 688         if(!total)
 689         {
 690                 cout<<"Already up to date\n";
 691                 return 0;
 692         }
 693         cout<<"Will build "<<total<<" target(s)\n";
 694
 695         vector<Action *> actions;
 696
 697         unsigned count=0;
 698
 699         bool fail=false;
 700         bool finish=false;
 701
 702         while(!finish)
 703         {
 704                 if(actions.size()<jobs && !fail)
 705                 {
 706                         Target *tgt=cmdline->get_buildable_target();
 707                         if(tgt)
 708                         {
 709                                 Action *action=tgt->build();
 710                                 if(action)
 711                                         actions.push_back(action);
 712
 713                                 if(show_progress)
 714                                 {
 715                                         cout<<count<<" of "<<total<<" targets built\033[1G";
 716                                         cout.flush();
 717                                 }
 718                         }
 719                         else if(actions.empty())
 720                                 finish=true;
 721                 }
 722                 else
 723                         Time::sleep(10*Time::msec);
 724
 725                 for(unsigned i=0; i<actions.size();)
 726                 {
 727                         int status=actions[i]->check();
 728                         if(status>=0)
 729                         {
 730                                 ++count;
 731
 732                                 delete actions[i];
 733                                 actions.erase(actions.begin()+i);
 734                                 if(status>0)
 735                                         fail=true;
 736                                 if(actions.empty() && fail)
 737                                         finish=true;
 738                         }
 739                         else
 740                                 ++i;
 741                 }
 742         }
 743
 744         if(show_progress)
 745                 cout<<"\033[K";
 746         if(fail)
 747                 cout<<"Build failed\n";
 748         else if(show_progress)
 749                 cout<<"Build complete\n";
 750
 751         return fail?1:0;
 752 }
 753
 754 /**
 755 Cleans buildable targets.  If clean is 1, cleans only this package.  If
 756 clean is 2 or greater, cleans all buildable packages.
 757 */
 758 int Builder::do_clean()
 759 {
 760         // Cleaning doesn't care about ordering, so a simpler method can be used
 761
 762         set<Target *> clean_tgts;
 763         TargetList queue;
 764         queue.push_back(get_target("cmdline"));
 765
 766         while(!queue.empty())
 767         {
 768                 Target *tgt=queue.front();
 769                 queue.erase(queue.begin());
 770
 771                 if(tgt->get_buildable() && (tgt->get_package()==main_pkg || clean>=2))
 772                         clean_tgts.insert(tgt);
 773
 774                 const TargetList &deps=tgt->get_depends();
 775                 for(TargetList::const_iterator i=deps.begin(); i!=deps.end(); ++i)
 776                         if(!clean_tgts.count(*i))
 777                                 queue.push_back(*i);
 778         }
 779
 780         for(set<Target *>::iterator i=clean_tgts.begin(); i!=clean_tgts.end(); ++i)
 781         {
 782                 Action *action=new Unlink(*this, **i);
 783                 while(action->check()<0);
 784                 delete action;
 785         }
 786
 787         return 0;
 788 }
 789
 790 /**
 791 Prints out information about the default package.
 792 */
 793 void Builder::package_help()
 794 {
 795         const Config &config=main_pkg->get_config();
 796         const Config::OptionMap &options=config.get_options();
 797
 798         cout<<"Required packages:\n  ";
 799         const PackageList &requires=main_pkg->get_requires();
 800         for(PackageList::const_iterator i=requires.begin(); i!=requires.end(); ++i)
 801         {
 802                 if(i!=requires.begin())
 803                         cout<<", ";
 804                 cout<<(*i)->get_name();
 805         }
 806         cout<<"\n\n";
 807         cout<<"Package configuration:\n";
 808         for(Config::OptionMap::const_iterator i=options.begin(); i!=options.end(); ++i)
 809         {
 810                 const Config::Option &opt=i->second;
 811                 cout<<"  "<<opt.name<<": "<<opt.descr<<" ("<<opt.value<<") ["<<opt.defv<<"]\n";
 812         }
 813 }
 814
 815 Application::RegApp<Builder> Builder::reg;
 816
 817
 818 Builder::Loader::Loader(Builder &b, const Path &s):
 819         bld(b),
 820         src(s)
 821 {
 822         add("architecture", &Loader::architecture);
 823         add("binary_package", &Loader::binpkg);
 824         add("profile", &Loader::profile);
 825         add("package", &Loader::package);
 826 }
 827
 828 void Builder::Loader::architecture(const string &n)
 829 {
 830         Architecture arch(bld, n);
 831         load_sub(arch);
 832         bld.archs.insert(ArchMap::value_type(n, arch));
 833 }
 834
 835 void Builder::Loader::binpkg(const string &n)
 836 {
 837         BinaryPackage *pkg=new BinaryPackage(bld, n);
 838         load_sub(*pkg);
 839         bld.packages.insert(PackageMap::value_type(n, pkg));
 840 }
 841
 842 void Builder::Loader::profile(const string &n)
 843 {
 844         StringMap prf;
 845         load_sub<ProfileLoader>(prf);
 846         bld.profile_tmpl.insert(ProfileTemplateMap::value_type(n, prf));
 847 }
 848
 849 void Builder::Loader::package(const string &n)
 850 {
 851         SourcePackage *pkg=new SourcePackage(bld, n, src);
 852         if(!bld.main_pkg)
 853                 bld.main_pkg=pkg;
 854
 855         load_sub(*pkg);
 856         bld.packages.insert(PackageMap::value_type(n, pkg));
 857 }
 858
 859
 860 Builder::ProfileLoader::ProfileLoader(StringMap &p):
 861         profile(p)
 862 {
 863         add("option", &ProfileLoader::option);
 864 }
 865
 866 void Builder::ProfileLoader::option(const string &o, const string &v)
 867 {
 868         profile.insert(StringMap::value_type(o, v));
 869 }