source/builder.cpp

   1 /* $Id$
   2
   3 This file is part of builder
   4 Copyright © 2006-2010  Mikko Rasa, Mikkosoft Productions
   5 Distributed under the LGPL
   6 */
   7
   8 #include <set>
   9 #include <cstdlib>
  10 #include <msp/core/except.h>
  11 #include <msp/core/getopt.h>
  12 #include <msp/datafile/parser.h>
  13 #include <msp/fs/dir.h>
  14 #include <msp/fs/stat.h>
  15 #include <msp/fs/utils.h>
  16 #include <msp/io/buffered.h>
  17 #include <msp/io/except.h>
  18 #include <msp/io/file.h>
  19 #include <msp/io/print.h>
  20 #include <msp/strings/formatter.h>
  21 #include <msp/strings/regex.h>
  22 #include <msp/strings/utils.h>
  23 #include <msp/time/units.h>
  24 #include <msp/time/utils.h>
  25 #include "action.h"
  26 #include "analyzer.h"
  27 #include "binarypackage.h"
  28 #include "builder.h"
  29 #include "header.h"
  30 #include "install.h"
  31 #include "misc.h"
  32 #include "package.h"
  33 #include "pkgconfig.h"
  34 #include "sharedlibrary.h"
  35 #include "sourcepackage.h"
  36 #include "systemlibrary.h"
  37 #include "unlink.h"
  38 #include "virtualtarget.h"
  39
  40 using namespace std;
  41 using namespace Msp;
  42
  43 namespace {
  44
  45 void update_hash(string &hash, const string &value)
  46 {
  47         for(unsigned i=0; i<value.size(); ++i)
  48                 hash[i%hash.size()] ^= value[i];
  49 }
  50
  51 }
  52
  53
  54 Builder::Builder(int argc, char **argv):
  55         main_pkg(0),
  56         native_arch(*this, string()),
  57         analyzer(0),
  58         build(false),
  59         clean(0),
  60         dry_run(false),
  61         help(false),
  62         verbose(1),
  63         show_progress(false),
  64         build_file("Build"),
  65         jobs(1),
  66         conf_all(false),
  67         conf_only(false),
  68         build_all(false),
  69         create_makefile(false)
  70 {
  71         string analyze_mode;
  72         string work_dir;
  73         bool full_paths = false;
  74         unsigned max_depth = 5;
  75         StringList cmdline_warn;
  76         string prfx;
  77         string arch;
  78
  79         GetOpt getopt;
  80         getopt.add_option('a', "analyze",    analyze_mode,  GetOpt::REQUIRED_ARG).set_help("Perform analysis.  MODE can be deps, alldeps or rebuild.", "MODE");
  81         getopt.add_option('b', "build",      build,         GetOpt::NO_ARG).set_help("Perform build even if doing analysis.");
  82         getopt.add_option('c', "clean",      clean,         GetOpt::NO_ARG).set_help("Clean buildable targets.");
  83         getopt.add_option('f', "file",       build_file,    GetOpt::REQUIRED_ARG).set_help("Read info from FILE instead of Build.", "FILE");
  84         getopt.add_option('h', "help",       help,          GetOpt::NO_ARG).set_help("Print this message.");
  85         getopt.add_option('j', "jobs",       jobs,          GetOpt::REQUIRED_ARG).set_help("Run NUM commands at once, whenever possible.", "NUM");
  86         getopt.add_option('n', "dry-run",    dry_run,       GetOpt::NO_ARG).set_help("Don't actually do anything, only show what would be done.");
  87         getopt.add_option('v', "verbose",    verbose,       GetOpt::NO_ARG).set_help("Print more information about what's going on.");
  88         getopt.add_option('A', "conf-all",   conf_all,      GetOpt::NO_ARG).set_help("Apply configuration to all packages.");
  89         getopt.add_option('B', "build-all",  build_all,     GetOpt::NO_ARG).set_help("Build all targets unconditionally.");
  90         getopt.add_option('C', "chdir",      work_dir,      GetOpt::REQUIRED_ARG).set_help("Change to DIR before doing anything else.", "DIR");
  91         getopt.add_option('P', "progress",   show_progress, GetOpt::NO_ARG).set_help("Display progress while building.");
  92         getopt.add_option('W', "what-if",    what_if,       GetOpt::REQUIRED_ARG).set_help("Pretend that FILE has changed.", "FILE");
  93         getopt.add_option(     "arch",       arch,          GetOpt::REQUIRED_ARG).set_help("Architecture to build for.", "ARCH");
  94         getopt.add_option(     "conf-only",  conf_only,     GetOpt::NO_ARG).set_help("Stop after configuring packages.");
  95         getopt.add_option(     "full-paths", full_paths,    GetOpt::NO_ARG).set_help("Output full paths in analysis.");
  96         getopt.add_option(     "max-depth",  max_depth,     GetOpt::REQUIRED_ARG).set_help("Maximum depth to show in analysis.", "NUM");
  97         getopt.add_option(     "prefix",     prfx,          GetOpt::REQUIRED_ARG).set_help("Directory to install things to.", "DIR");
  98         getopt.add_option(     "warnings",   cmdline_warn,  GetOpt::REQUIRED_ARG).set_help("Compiler warnings to use.", "LIST");
  99         usagemsg = getopt.generate_usage(argv[0])+" [<target> ...]";
 100         helpmsg = getopt.generate_help();
 101         getopt(argc, argv);
 102
 103         if(!analyze_mode.empty())
 104         {
 105                 analyzer = new Analyzer(*this);
 106
 107                 if(analyze_mode=="deps")
 108                         analyzer->set_mode(Analyzer::DEPS);
 109                 else if(analyze_mode=="alldeps")
 110                         analyzer->set_mode(Analyzer::ALLDEPS);
 111                 else if(analyze_mode=="rebuild")
 112                         analyzer->set_mode(Analyzer::REBUILD);
 113                 else if(analyze_mode=="rdeps")
 114                         analyzer->set_mode(Analyzer::RDEPS);
 115                 else
 116                         throw UsageError("Invalid analyze mode");
 117
 118                 analyzer->set_max_depth(max_depth);
 119                 analyzer->set_full_paths(full_paths);
 120         }
 121         else if(!clean && !create_makefile)
 122                 build = true;
 123
 124         const vector<string> &args = getopt.get_args();
 125         for(vector<string>::const_iterator i=args.begin(); i!=args.end(); ++i)
 126         {
 127                 string::size_type equal = i->find('=');
 128                 if(equal!=string::npos)
 129                         cmdline_options.insert(StringMap::value_type(i->substr(0, equal), i->substr(equal+1)));
 130                 else
 131                         cmdline_targets.push_back(*i);
 132         }
 133
 134         if(cmdline_targets.empty())
 135                 cmdline_targets.push_back("default");
 136
 137         if(!work_dir.empty())
 138                 FS::chdir(work_dir);
 139
 140         cwd = FS::getcwd();
 141
 142         native_arch.set_tool("CC",  "gcc");
 143         native_arch.set_tool("CXX", "g++");
 144         native_arch.set_tool("LD",  "gcc");
 145         native_arch.set_tool("LXX", "g++");
 146         native_arch.set_tool("AR",  "ar");
 147
 148         load_build_file((FS::get_sys_data_dir(argv[0], "builder")/"builderrc").str());
 149         load_build_file((FS::get_user_data_dir("builder")/"rc").str());
 150
 151         if(arch.empty())
 152                 current_arch = &native_arch;
 153         else
 154                 current_arch = new Architecture(*this, arch);
 155
 156         if(!current_arch->is_native())
 157         {
 158                 for(StringMap::const_iterator i=cross_prefixes.begin(); i!=cross_prefixes.end(); ++i)
 159                         if(current_arch->match_name(i->first))
 160                         {
 161                                 current_arch->set_cross_prefix(i->second);
 162                                 break;
 163                         }
 164         }
 165
 166         if(prfx.empty())
 167         {
 168                 if(current_arch->is_native())
 169                         prefix = (FS::get_home_dir()/"local").str();
 170                 else
 171                         prefix = (FS::get_home_dir()/"local"/current_arch->get_name()).str();
 172         }
 173         else
 174                 prefix = FS::getcwd()/prfx;
 175
 176         warnings.push_back("all");
 177         warnings.push_back("extra");
 178         warnings.push_back("shadow");
 179         warnings.push_back("pointer-arith");
 180         warnings.push_back("error");
 181         for(StringList::iterator i=cmdline_warn.begin(); i!=cmdline_warn.end(); ++i)
 182         {
 183                 vector<string> warns = split(*i, ',');
 184                 warnings.insert(warnings.end(), warns.begin(), warns.end());
 185         }
 186
 187         pkg_path.push_back(cwd/".");
 188         pkg_path.push_back(cwd/"..");
 189 }
 190
 191 Builder::~Builder()
 192 {
 193         for(PackageMap::iterator i=packages.begin(); i!=packages.end(); ++i)
 194                 delete i->second;
 195         for(TargetMap::iterator i=targets.begin(); i!=targets.end(); ++i)
 196                 delete i->second;
 197         delete analyzer;
 198 }
 199
 200 int Builder::main()
 201 {
 202         if(prefix.str()!="/usr")
 203         {
 204                 FS::Path pcdir = prefix/"lib"/"pkgconfig";
 205                 if(const char *pcp = getenv("PKG_CONFIG_PATH"))
 206                 {
 207                         vector<string> path = split(pcp, ':');
 208                         bool found = false;
 209                         for(vector<string>::const_iterator i=path.begin(); (!found && i!=path.end()); ++i)
 210                                 found = (*i==pcdir.str());
 211                         if(!found)
 212                         {
 213                                 path.push_back(pcdir.str());
 214                                 setenv("PKG_CONFIG_PATH", join(path.begin(), path.end(), ":").c_str(), true);
 215                         }
 216                 }
 217                 else
 218                         setenv("PKG_CONFIG_PATH", pcdir.str().c_str(), true);
 219         }
 220
 221         if(load_build_file(cwd/build_file))
 222         {
 223                 if(help)
 224                 {
 225                         usage(0, "builder", false);
 226                         return 0;
 227                 }
 228                 else
 229                 {
 230                         IO::print(IO::cerr, "No build info here.\n");
 231                         return 1;
 232                 }
 233         }
 234
 235         main_pkg->configure(cmdline_options, conf_all?2:1);
 236
 237         if(help)
 238         {
 239                 usage(0, "builder", false);
 240                 IO::print("\n");
 241                 package_help();
 242                 return 0;
 243         }
 244
 245         if(!conf_only && create_targets())
 246                 return 1;
 247
 248         PackageList all_reqs = main_pkg->collect_requires();
 249
 250         if(conf_only)
 251                 return 0;
 252
 253         if(verbose>=2)
 254         {
 255                 IO::print("Building on %s, for %s%s\n", native_arch.get_name(),
 256                         current_arch->get_name(), (current_arch->is_native() ? " (native)" : ""));
 257                 IO::print("Prefix is %s\n", prefix);
 258         }
 259         if(verbose>=1)
 260                 IO::print("%d active packages, %d targets\n", all_reqs.size(), targets.size());
 261         if(verbose>=2)
 262         {
 263                 for(PackageList::const_iterator i=all_reqs.begin(); i!=all_reqs.end(); ++i)
 264                 {
 265                         IO::print(" %s", (*i)->get_name());
 266                         if(dynamic_cast<SourcePackage *>(*i))
 267                                 IO::print("*");
 268                         unsigned count = 0;
 269                         unsigned to_be_built = 0;
 270                         for(TargetMap::iterator j=targets.begin(); j!=targets.end(); ++j)
 271                                 if(j->second->get_package()==*i)
 272                                 {
 273                                         ++count;
 274                                         if(j->second->get_rebuild())
 275                                                 ++to_be_built;
 276                                 }
 277                         if(count)
 278                         {
 279                                 IO::print(" (%d targets", count);
 280                                 if(to_be_built)
 281                                         IO::print(", %d to be built", to_be_built);
 282                                 IO::print(")");
 283                         }
 284                         IO::print("\n");
 285                 }
 286         }
 287
 288         if(analyzer)
 289                 analyzer->analyze();
 290
 291         if(!problems.empty())
 292         {
 293                 IO::print(IO::cerr, "The following problems were detected:\n");
 294                 for(ProblemList::iterator i=problems.begin(); i!=problems.end(); ++i)
 295                         IO::print(IO::cerr, "  %s: %s\n", i->package, i->descr);
 296                 if(!analyzer)
 297                         IO::print(IO::cerr, "Please fix them and try again.\n");
 298                 return 1;
 299         }
 300
 301         if(clean)
 302                 exit_code = do_clean();
 303         else if(build)
 304                 exit_code = do_build();
 305
 306         return exit_code;
 307 }
 308
 309 string Builder::run_pkgconfig(const string &pkg, const string &what)
 310 {
 311         list<string> argv;
 312         argv.push_back("pkg-config");
 313         if(what=="cflags" || what=="libs")
 314                 argv.push_back("--"+what);
 315         else if(what=="flags")
 316         {
 317                 argv.push_back("--cflags");
 318                 argv.push_back("--libs");
 319         }
 320         else
 321                 argv.push_back("--variable="+what);
 322         argv.push_back(pkg);
 323
 324         if(verbose>=4)
 325                 IO::print("Running %s\n", join(argv.begin(), argv.end()));
 326
 327         int status;
 328         string res = run_command(argv, &status);
 329         if(status)
 330                 throw Exception(format("pkg-config for package %s failed", pkg));
 331
 332         return res;
 333 }
 334
 335 Package *Builder::get_package(const string &name)
 336 {
 337         PackageMap::iterator i = packages.find(format("%s/%s", name, current_arch->get_system()));
 338         if(i==packages.end())
 339                 i = packages.find(name);
 340         if(i!=packages.end())
 341                 return i->second;
 342
 343         FS::Path path = get_package_location(name);
 344         if(!path.empty() && !load_build_file(path/"Build"))
 345         {
 346                 i = packages.find(name);
 347                 if(i!=packages.end())
 348                         return i->second;
 349         }
 350
 351         Package *pkg = 0;
 352         try
 353         {
 354                 // Package source not found - create a binary package
 355                 pkg = BinaryPackage::from_pkgconfig(*this, name);
 356         }
 357         catch(...)
 358         {
 359                 problem(name, "not found");
 360         }
 361
 362         packages.insert(PackageMap::value_type(name, pkg));
 363
 364         return pkg;
 365 }
 366
 367 Target *Builder::get_target(const string &n) const
 368 {
 369         // XXX Used for getting targets by path.  get_target(const FS::Path &)?
 370         TargetMap::const_iterator i = targets.find(n);
 371         if(i!=targets.end())
 372                 return i->second;
 373         return 0;
 374 }
 375
 376 Target *Builder::get_header(const string &include, const FS::Path &from, const list<string> &path)
 377 {
 378         string hash(8, 0);
 379         if(include[0]=='\"')
 380                 update_hash(hash, from.str());
 381         for(list<string>::const_iterator i=path.begin(); i!=path.end(); ++i)
 382                 update_hash(hash, *i);
 383
 384         string id = hash+include;
 385         TargetMap::iterator i = includes.find(id);
 386         if(i!=includes.end())
 387                 return i->second;
 388
 389         static string cxx_ver;
 390         if(cxx_ver.empty())
 391         {
 392                 StringList argv;
 393                 argv.push_back(current_arch->get_tool("CXX"));
 394                 argv.push_back("--version");
 395                 if(RegMatch m = Regex("[0-9]\\.[0-9.]+").match(run_command(argv)))
 396                 {
 397                         cxx_ver = m[0].str;
 398                         while(!cxx_ver.empty() && !FS::is_dir(FS::Path("/usr/include/c++")/cxx_ver))
 399                         {
 400                                 string::size_type dot = cxx_ver.rfind('.');
 401                                 if(dot==string::npos)
 402                                         break;
 403                                 cxx_ver.erase(dot);
 404                         }
 405                         if(verbose>=5)
 406                                 IO::print("C++ version is %s\n", cxx_ver);
 407                 }
 408                 else
 409                         cxx_ver = "-";
 410         }
 411
 412         string fn = include.substr(1);
 413         if(verbose>=5)
 414                 IO::print("Looking for include %s from %s with path %s\n", fn, from, join(path.begin(), path.end()));
 415
 416         StringList syspath;
 417         if(current_arch->is_native())
 418                 syspath.push_back("/usr/include");
 419         else
 420                 syspath.push_back("/usr/"+current_arch->get_cross_prefix()+"/include");
 421         if(cxx_ver!="-")
 422                 syspath.push_back((FS::Path("/usr/include/c++/")/cxx_ver).str());
 423
 424         Target *tgt = 0;
 425         if(include[0]=='\"')
 426                 tgt = get_header(FS::Path(from)/fn);
 427         for(list<string>::const_iterator j=path.begin(); (!tgt && j!=path.end()); ++j)
 428                 tgt = get_header(cwd/ *j/fn);
 429         for(list<string>::const_iterator j=syspath.begin(); (!tgt && j!=syspath.end()); ++j)
 430                 tgt = get_header(FS::Path(*j)/fn);
 431
 432         includes.insert(TargetMap::value_type(id, tgt));
 433
 434         return tgt;
 435 }
 436
 437 Target *Builder::get_library(const string &lib, const list<string> &path, LibMode mode)
 438 {
 439         string hash(8, 0);
 440         for(list<string>::const_iterator i=path.begin(); i!=path.end(); ++i)
 441                 update_hash(hash, *i);
 442
 443         string id = hash+string(1, mode)+lib;
 444         TargetMap::iterator i = libraries.find(id);
 445         if(i!=libraries.end())
 446                 return i->second;
 447
 448         StringList syspath;
 449         if(current_arch->is_native())
 450         {
 451                 syspath.push_back("/lib");
 452                 syspath.push_back("/usr/lib");
 453         }
 454         else
 455                 syspath.push_back("/usr/"+current_arch->get_cross_prefix()+"/lib");
 456
 457         if(verbose>=5)
 458                 IO::print("Looking for library %s with path %s\n", lib, join(path.begin(), path.end()));
 459
 460         Target *tgt = 0;
 461         for(StringList::const_iterator j=path.begin(); (!tgt && j!=path.end()); ++j)
 462                 tgt = get_library(lib, cwd/ *j, mode);
 463         for(StringList::iterator j=syspath.begin(); (!tgt && j!=syspath.end()); ++j)
 464                 tgt = get_library(lib, *j, mode);
 465
 466         libraries.insert(TargetMap::value_type(id, tgt));
 467
 468         return tgt;
 469 }
 470
 471 void Builder::apply_profile_template(Config &config, const string &pt) const
 472 {
 473         vector<string> parts = split(pt, '-');
 474
 475         for(vector<string>::iterator i=parts.begin(); i!=parts.end(); ++i)
 476         {
 477                 ProfileTemplateMap::const_iterator j = profile_tmpl.find(*i);
 478                 if(j==profile_tmpl.end())
 479                         continue;
 480
 481                 config.update(j->second);
 482         }
 483 }
 484
 485 void Builder::problem(const string &p, const string &d)
 486 {
 487         problems.push_back(Problem(p, d));
 488 }
 489
 490 void Builder::add_target(Target *t)
 491 {
 492         targets.insert(TargetMap::value_type(t->get_name(), t));
 493         new_tgts.push_back(t);
 494 }
 495
 496 void Builder::usage(const char *reason, const char *argv0, bool brief)
 497 {
 498         if(reason)
 499                 IO::print(IO::cerr, "%s\n", reason);
 500
 501         if(brief)
 502                 IO::print(IO::cerr, "Usage: %s\n", usagemsg);
 503         else
 504         {
 505                 IO::print(IO::cerr, "Builder 1.0\n\n");
 506                 IO::print(IO::cerr, "Usage: %s [options] [<target> ...]\n\n", argv0);
 507                 IO::print(IO::cerr, "Options:\n");
 508                 IO::print(IO::cerr, helpmsg);
 509         }
 510 }
 511
 512 FS::Path Builder::get_package_location(const string &name)
 513 {
 514         if(verbose>=3)
 515                 IO::print("Looking for package %s\n", name);
 516
 517         try
 518         {
 519                 // Try to get source directory with pkgconfig
 520                 string srcdir = strip(run_pkgconfig(name, "source"));
 521                 if(!srcdir.empty())
 522                         return srcdir;
 523         }
 524         catch(...)
 525         { }
 526
 527         if(pkg_dirs.empty())
 528         {
 529                 for(list<FS::Path>::const_iterator i=pkg_path.begin(); i!=pkg_path.end(); ++i)
 530                 {
 531                         list<string> files = list_files(*i);
 532                         for(list<string>::const_iterator j=files.begin(); j!=files.end(); ++j)
 533                         {
 534                                 FS::Path full = *i / *j;
 535                                 if(FS::exists(full/"Build"))
 536                                         pkg_dirs.push_back(full);
 537                         }
 538                 }
 539                 if(verbose>=3)
 540                         IO::print("%d packages found in path\n", pkg_dirs.size());
 541         }
 542
 543         bool msp = !name.compare(0, 3, "msp");
 544         for(list<FS::Path>::const_iterator i=pkg_dirs.begin(); i!=pkg_dirs.end(); ++i)
 545         {
 546                 string base = basename(*i);
 547                 unsigned dash = base.rfind('-');
 548
 549                 if(!base.compare(0, dash, name))
 550                         return *i;
 551                 else if(msp && !base.compare(0, dash-3, name, 3, string::npos))
 552                         return *i;
 553         }
 554
 555         return FS::Path();
 556 }
 557
 558 int Builder::load_build_file(const FS::Path &fn)
 559 {
 560         try
 561         {
 562                 IO::BufferedFile in(fn.str());
 563
 564                 if(verbose>=3)
 565                         IO::print("Reading %s\n", fn);
 566
 567                 DataFile::Parser parser(in, fn.str());
 568                 Loader loader(*this, fn.subpath(0, fn.size()-1));
 569                 loader.load(parser);
 570         }
 571         catch(const IO::FileNotFound &)
 572         {
 573                 return -1;
 574         }
 575
 576         return 0;
 577 }
 578
 579 int Builder::create_targets()
 580 {
 581         Target *world = new VirtualTarget(*this, "world");
 582
 583         Target *def_tgt = new VirtualTarget(*this, "default");
 584         world->add_depend(def_tgt);
 585
 586         Target *install = new VirtualTarget(*this, "install");
 587         world->add_depend(install);
 588
 589         Target *tarballs = new VirtualTarget(*this, "tarballs");
 590         world->add_depend(tarballs);
 591
 592         PackageList all_reqs = main_pkg->collect_requires();
 593         for(PackageList::iterator i=all_reqs.begin(); i!=all_reqs.end(); ++i)
 594         {
 595                 SourcePackage *spkg = dynamic_cast<SourcePackage *>(*i);
 596                 if(!spkg)
 597                         continue;
 598
 599                 const ComponentList &components = spkg->get_components();
 600                 for(ComponentList::const_iterator j=components.begin(); j!=components.end(); ++j)
 601                         j->create_targets();
 602
 603                 if(spkg->get_install_flags()&(SourcePackage::LIB|SourcePackage::INCLUDE))
 604                 {
 605                         PkgConfig *pc = new PkgConfig(*this, *spkg);
 606                         install->add_depend(new Install(*this, *spkg, *pc));
 607                 }
 608         }
 609
 610         // Find dependencies until no new targets are created
 611         while(!new_tgts.empty())
 612         {
 613                 Target *tgt = new_tgts.front();
 614                 new_tgts.erase(new_tgts.begin());
 615                 tgt->find_depends();
 616                 if(!tgt->get_depends_ready())
 617                         new_tgts.push_back(tgt);
 618         }
 619
 620         // Apply what-ifs
 621         for(StringList::iterator i=what_if.begin(); i!=what_if.end(); ++i)
 622         {
 623                 Target *tgt = get_target((cwd/ *i).str());
 624                 if(!tgt)
 625                 {
 626                         IO::print(IO::cerr, "Unknown what-if target %s\n", *i);
 627                         return -1;
 628                 }
 629                 tgt->touch();
 630         }
 631
 632         // Make the cmdline target depend on all targets mentioned on the command line
 633         Target *cmdline = new VirtualTarget(*this, "cmdline");
 634         bool build_world = false;
 635         for(list<string>::iterator i=cmdline_targets.begin(); i!=cmdline_targets.end(); ++i)
 636         {
 637                 Target *tgt = get_target(*i);
 638                 if(!tgt)
 639                         tgt = get_target((cwd/ *i).str());
 640                 if(!tgt)
 641                 {
 642                         IO::print("I don't know anything about %s\n", *i);
 643                         return -1;
 644                 }
 645                 if(tgt==world)
 646                         build_world = true;
 647                 cmdline->add_depend(tgt);
 648         }
 649
 650         cmdline->prepare();
 651
 652         for(PackageMap::iterator i=packages.begin(); i!=packages.end(); ++i)
 653                 if(SourcePackage *spkg = dynamic_cast<SourcePackage *>(i->second))
 654                         spkg->get_deps_cache().save();
 655
 656         return 0;
 657 }
 658
 659 Target *Builder::get_header(const FS::Path &fn)
 660 {
 661         Target *tgt = get_target(fn.str());
 662         if(tgt) return tgt;
 663
 664         if(FS::is_reg(fn))
 665         {
 666                 tgt = new SystemHeader(*this, fn.str());
 667                 return tgt;
 668         }
 669         return 0;
 670 }
 671
 672 Target *Builder::get_library(const string &lib, const FS::Path &path, LibMode mode)
 673 {
 674         // Populate a list of candidate filenames
 675         StringList candidates;
 676
 677         if(mode!=ALL_STATIC)
 678         {
 679                 // XXX Should probably let the Architecture populate the list
 680                 if(current_arch->get_system()=="windows")
 681                 {
 682                         candidates.push_back("lib"+lib+".dll");
 683                         candidates.push_back(lib+".dll");
 684                 }
 685                 else
 686                         candidates.push_back("lib"+lib+".so");
 687         }
 688
 689         /* Static libraries are always considered, since sometimes shared versions
 690         may not be available */
 691         candidates.push_back("lib"+lib+".a");
 692         if(current_arch->get_system()=="windows")
 693                 candidates.push_back("lib"+lib+".dll.a");
 694
 695         for(StringList::iterator i=candidates.begin(); i!=candidates.end(); ++i)
 696         {
 697                 string full = (path/ *i).str();
 698                 Target *tgt = get_target(full);
 699
 700                 if(tgt)
 701                 {
 702                         Target *real_tgt = tgt;
 703                         if(Install *inst = dynamic_cast<Install *>(tgt))
 704                                 real_tgt = &inst->get_source();
 705
 706                         /* Ignore dynamic libraries from local packages unless library mode is
 707                         DYNAMIC */
 708                         if(dynamic_cast<SharedLibrary *>(real_tgt) && mode!=DYNAMIC)
 709                                 continue;
 710                         else if(tgt)
 711                                 return tgt;
 712                 }
 713                 else if(FS::is_reg(full))
 714                 {
 715                         tgt = new SystemLibrary(*this, full);
 716                         return tgt;
 717                 }
 718         }
 719
 720         return 0;
 721 }
 722
 723 int Builder::do_build()
 724 {
 725         Target *cmdline = get_target("cmdline");
 726
 727         unsigned total = 0;
 728         for(map<string, Target *>::const_iterator i=targets.begin(); i!=targets.end(); ++i)
 729                 if(i->second->is_buildable() && i->second->get_rebuild())
 730                         ++total;
 731
 732         if(!total)
 733         {
 734                 IO::print("Already up to date\n");
 735                 return 0;
 736         }
 737         if(verbose>=1)
 738                 IO::print("Will build %d target%s\n", total, (total!=1 ? "s" : ""));
 739
 740         vector<Action *> actions;
 741
 742         unsigned count = 0;
 743
 744         bool fail = false;
 745         bool finish = false;
 746
 747         while(!finish)
 748         {
 749                 if(actions.size()<jobs && !fail)
 750                 {
 751                         Target *tgt = cmdline->get_buildable_target();
 752                         if(tgt)
 753                         {
 754                                 Action *action = tgt->build();
 755                                 if(action)
 756                                         actions.push_back(action);
 757
 758                                 if(show_progress)
 759                                         IO::print("%d of %d target%s built\033[1G", count, total, (total!=1 ? "s" : ""));
 760                         }
 761                         else if(actions.empty())
 762                                 finish = true;
 763                 }
 764                 else
 765                         Time::sleep(10*Time::msec);
 766
 767                 for(unsigned i=0; i<actions.size();)
 768                 {
 769                         int status = actions[i]->check();
 770                         if(status>=0)
 771                         {
 772                                 ++count;
 773
 774                                 delete actions[i];
 775                                 actions.erase(actions.begin()+i);
 776                                 if(status>0)
 777                                         fail = true;
 778                                 if(actions.empty() && fail)
 779                                         finish = true;
 780                         }
 781                         else
 782                                 ++i;
 783                 }
 784         }
 785
 786         if(show_progress)
 787                 IO::print("\033[K");
 788         if(fail)
 789                 IO::print("Build failed\n");
 790         else if(show_progress)
 791                 IO::print("Build complete\n");
 792
 793         return fail;
 794 }
 795
 796 int Builder::do_clean()
 797 {
 798         // Cleaning doesn't care about ordering, so a simpler method can be used
 799
 800         set<Target *> clean_tgts;
 801         TargetList queue;
 802         queue.push_back(get_target("cmdline"));
 803
 804         while(!queue.empty())
 805         {
 806                 Target *tgt = queue.front();
 807                 queue.erase(queue.begin());
 808
 809                 if(tgt->is_buildable() && (tgt->get_package()==main_pkg || clean>=2))
 810                         clean_tgts.insert(tgt);
 811
 812                 const TargetList &deps = tgt->get_depends();
 813                 for(TargetList::const_iterator i=deps.begin(); i!=deps.end(); ++i)
 814                         if(!clean_tgts.count(*i))
 815                                 queue.push_back(*i);
 816         }
 817
 818         for(set<Target *>::iterator i=clean_tgts.begin(); i!=clean_tgts.end(); ++i)
 819                 if(FileTarget *ft = dynamic_cast<FileTarget *>(*i))
 820                 {
 821                         Action *action = new Unlink(*this, *ft);
 822                         while(action->check()<0) ;
 823                         delete action;
 824                 }
 825
 826         return 0;
 827 }
 828
 829 void Builder::package_help()
 830 {
 831         const Config &config = main_pkg->get_config();
 832         const Config::OptionMap &options = config.get_options();
 833
 834         IO::print("Required packages:\n  ");
 835         const PackageList &requires = main_pkg->get_requires();
 836         for(PackageList::const_iterator i=requires.begin(); i!=requires.end(); ++i)
 837         {
 838                 if(i!=requires.begin())
 839                         IO::print(", ");
 840                 IO::print((*i)->get_name());
 841         }
 842         IO::print("\n\nPackage configuration:\n");
 843         for(Config::OptionMap::const_iterator i=options.begin(); i!=options.end(); ++i)
 844         {
 845                 const Config::Option &opt = i->second;
 846                 IO::print("  %s: %s (%s)", opt.name, opt.descr, opt.value);
 847                 if(opt.value!=opt.defv)
 848                         IO::print(" [%s]", opt.defv);
 849                 IO::print("\n");
 850         }
 851 }
 852
 853 Application::RegApp<Builder> Builder::reg;
 854 string Builder::usagemsg;
 855 string Builder::helpmsg;
 856
 857
 858 Builder::Loader::Loader(Builder &b, const FS::Path &s):
 859         bld(b),
 860         src(s)
 861 {
 862         add("binary_package", &Loader::binpkg);
 863         add("cross_prefix", &Loader::cross_prefix);
 864         add("profile", &Loader::profile);
 865         add("package", &Loader::package);
 866 }
 867
 868 void Builder::Loader::binpkg(const string &n)
 869 {
 870         BinaryPackage *pkg = new BinaryPackage(bld, n);
 871         load_sub(*pkg);
 872         bld.packages.insert(PackageMap::value_type(n, pkg));
 873 }
 874
 875 void Builder::Loader::cross_prefix(const string &a, const string &p)
 876 {
 877         bld.cross_prefixes[a] = p;
 878 }
 879
 880 void Builder::Loader::profile(const string &n)
 881 {
 882         StringMap prf;
 883         ProfileLoader ldr(prf);
 884         load_sub_with(ldr);
 885         bld.profile_tmpl.insert(ProfileTemplateMap::value_type(n, prf));
 886 }
 887
 888 void Builder::Loader::package(const string &n)
 889 {
 890         SourcePackage *pkg = new SourcePackage(bld, n, src);
 891         if(!bld.main_pkg)
 892                 bld.main_pkg = pkg;
 893
 894         load_sub(*pkg);
 895         bld.packages.insert(PackageMap::value_type(n, pkg));
 896 }
 897
 898
 899 Builder::ProfileLoader::ProfileLoader(StringMap &p):
 900         profile(p)
 901 {
 902         add("option", &ProfileLoader::option);
 903 }
 904
 905 void Builder::ProfileLoader::option(const string &o, const string &v)
 906 {
 907         profile.insert(StringMap::value_type(o, v));
 908 }