source/builder.cpp

   1 /* $Id$
   2
   3 This file is part of builder
   4 Copyright © 2006-2009  Mikko Rasa, Mikkosoft Productions
   5 Distributed under the LGPL
   6 */
   7
   8 #include <set>
   9 #include <cstdlib>
  10 #include <sys/utsname.h>
  11 #include <msp/core/except.h>
  12 #include <msp/core/getopt.h>
  13 #include <msp/datafile/parser.h>
  14 #include <msp/fs/dir.h>
  15 #include <msp/fs/stat.h>
  16 #include <msp/fs/utils.h>
  17 #include <msp/io/buffered.h>
  18 #include <msp/io/except.h>
  19 #include <msp/io/file.h>
  20 #include <msp/io/print.h>
  21 #include <msp/strings/formatter.h>
  22 #include <msp/strings/regex.h>
  23 #include <msp/strings/utils.h>
  24 #include <msp/time/units.h>
  25 #include <msp/time/utils.h>
  26 #include "action.h"
  27 #include "analyzer.h"
  28 #include "binarypackage.h"
  29 #include "builder.h"
  30 #include "header.h"
  31 #include "install.h"
  32 #include "misc.h"
  33 #include "package.h"
  34 #include "pkgconfig.h"
  35 #include "sharedlibrary.h"
  36 #include "sourcepackage.h"
  37 #include "systemlibrary.h"
  38 #include "unlink.h"
  39 #include "virtualtarget.h"
  40
  41 using namespace std;
  42 using namespace Msp;
  43
  44 namespace {
  45
  46 void update_hash(string &hash, const string &value)
  47 {
  48         for(unsigned i=0; i<value.size(); ++i)
  49                 hash[i%hash.size()]^=value[i];
  50 }
  51
  52 }
  53
  54
  55 Builder::Builder(int argc, char **argv):
  56         main_pkg(0),
  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                 unsigned 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         utsname un;
 143         string sysname="native";
 144         if(uname(&un)==0)
 145                 sysname=tolower(un.sysname);
 146
 147         native_arch=&archs.insert(ArchMap::value_type(sysname, Architecture(*this, sysname, true))).first->second;
 148         native_arch->set_tool("CC",  "gcc");
 149         native_arch->set_tool("CXX", "g++");
 150         native_arch->set_tool("LD",  "gcc");
 151         native_arch->set_tool("LXX", "g++");
 152         native_arch->set_tool("AR",  "ar");
 153
 154         load_build_file((FS::get_sys_data_dir(argv[0], "builder")/"builderrc").str());
 155         load_build_file((FS::get_home_dir()/".builderrc").str());
 156
 157         if(arch.empty())
 158                 current_arch=native_arch;
 159         else
 160                 current_arch=&get_architecture(arch);
 161
 162         if(prfx.empty())
 163         {
 164                 if(current_arch->is_native())
 165                         prefix=(FS::get_home_dir()/"local").str();
 166                 else
 167                         prefix=(FS::get_home_dir()/"local"/current_arch->get_name()).str();
 168         }
 169         else
 170                 prefix=FS::getcwd()/prfx;
 171
 172         warnings.push_back("all");
 173         warnings.push_back("extra");
 174         warnings.push_back("shadow");
 175         warnings.push_back("pointer-arith");
 176         warnings.push_back("error");
 177         for(StringList::iterator i=cmdline_warn.begin(); i!=cmdline_warn.end(); ++i)
 178         {
 179                 vector<string> warns=split(*i, ',');
 180                 warnings.insert(warnings.end(), warns.begin(), warns.end());
 181         }
 182
 183         pkg_path.push_back(cwd/".");
 184         pkg_path.push_back(cwd/"..");
 185 }
 186
 187 Builder::~Builder()
 188 {
 189         for(PackageMap::iterator i=packages.begin(); i!=packages.end(); ++i)
 190                 delete i->second;
 191         for(TargetMap::iterator i=targets.begin(); i!=targets.end(); ++i)
 192                 delete i->second;
 193         delete analyzer;
 194 }
 195
 196 int Builder::main()
 197 {
 198         if(prefix.str()!="/usr")
 199         {
 200                 FS::Path pcdir=prefix/"lib"/"pkgconfig";
 201                 if(const char *pcp=getenv("PKG_CONFIG_PATH"))
 202                 {
 203                         vector<string> path=split(pcp, ':');
 204                         bool found=false;
 205                         for(vector<string>::const_iterator i=path.begin(); (!found && i!=path.end()); ++i)
 206                                 found=(*i==pcdir.str());
 207                         if(!found)
 208                         {
 209                                 path.push_back(pcdir.str());
 210                                 setenv("PKG_CONFIG_PATH", join(path.begin(), path.end(), ":").c_str(), true);
 211                         }
 212                 }
 213                 else
 214                         setenv("PKG_CONFIG_PATH", pcdir.str().c_str(), true);
 215         }
 216
 217         if(load_build_file(cwd/build_file))
 218         {
 219                 if(help)
 220                 {
 221                         usage(0, "builder", false);
 222                         return 0;
 223                 }
 224                 else
 225                 {
 226                         IO::print(IO::cerr, "No build info here.\n");
 227                         return 1;
 228                 }
 229         }
 230
 231         main_pkg->configure(cmdline_options, conf_all?2:1);
 232
 233         if(help)
 234         {
 235                 usage(0, "builder", false);
 236                 IO::print("\n");
 237                 package_help();
 238                 return 0;
 239         }
 240
 241         if(!conf_only && create_targets())
 242                 return 1;
 243
 244         PackageList all_reqs=main_pkg->collect_requires();
 245
 246         if(conf_only)
 247                 return 0;
 248
 249         if(verbose>=2)
 250                 IO::print("Building on %s, for %s\n", native_arch->get_name(), current_arch->get_name());
 251         if(verbose>=1)
 252                 IO::print("%d active packages, %d targets\n", all_reqs.size(), targets.size());
 253         if(verbose>=2)
 254         {
 255                 for(PackageList::const_iterator i=all_reqs.begin(); i!=all_reqs.end(); ++i)
 256                 {
 257                         IO::print(" %s", (*i)->get_name());
 258                         if(dynamic_cast<SourcePackage *>(*i))
 259                                 IO::print("*");
 260                         unsigned count=0;
 261                         unsigned ood_count=0;
 262                         for(TargetMap::iterator j=targets.begin(); j!=targets.end(); ++j)
 263                                 if(j->second->get_package()==*i)
 264                                 {
 265                                         ++count;
 266                                         if(j->second->get_rebuild())
 267                                                 ++ood_count;
 268                                 }
 269                         if(count)
 270                         {
 271                                 IO::print(" (%d targets", count);
 272                                 if(ood_count)
 273                                         IO::print(", %d out-of-date", ood_count);
 274                                 IO::print(")");
 275                         }
 276                         IO::print("\n");
 277                 }
 278         }
 279
 280         if(analyzer)
 281                 analyzer->analyze();
 282
 283         if(!problems.empty())
 284         {
 285                 IO::print(IO::cerr, "The following problems were detected:\n");
 286                 for(ProblemList::iterator i=problems.begin(); i!=problems.end(); ++i)
 287                         IO::print(IO::cerr, "  %s: %s\n", i->package, i->descr);
 288                 IO::print(IO::cerr, "Please fix them and try again.\n");
 289                 return 1;
 290         }
 291
 292         if(clean)
 293                 exit_code=do_clean();
 294         else if(build)
 295                 exit_code=do_build();
 296
 297         return exit_code;
 298 }
 299
 300 string Builder::run_pkgconfig(const string &pkg, const string &what)
 301 {
 302         list<string> argv;
 303         argv.push_back("pkg-config");
 304         if(what=="cflags" || what=="libs")
 305                 argv.push_back("--"+what);
 306         else if(what=="flags")
 307         {
 308                 argv.push_back("--cflags");
 309                 argv.push_back("--libs");
 310         }
 311         else
 312                 argv.push_back("--variable="+what);
 313         argv.push_back(pkg);
 314
 315         if(verbose>=4)
 316                 IO::print("Running %s\n", join(argv.begin(), argv.end()));
 317
 318         int status;
 319         string res=run_command(argv, &status);
 320         if(status)
 321                 throw Exception(format("pkg-config for package %s failed", pkg));
 322
 323         return res;
 324 }
 325
 326 Package *Builder::get_package(const string &name)
 327 {
 328         PackageMap::iterator i=packages.find(format("%s/%s", name, current_arch->get_name()));
 329         if(i==packages.end())
 330                 i=packages.find(name);
 331         if(i!=packages.end())
 332                 return i->second;
 333
 334         FS::Path path=get_package_location(name);
 335         if(!path.empty() && !load_build_file(path/"Build"))
 336         {
 337                 i=packages.find(name);
 338                 if(i!=packages.end())
 339                         return i->second;
 340         }
 341
 342         Package *pkg=0;
 343         try
 344         {
 345                 // Package source not found - create a binary package
 346                 pkg=BinaryPackage::from_pkgconfig(*this, name);
 347         }
 348         catch(...)
 349         {
 350                 problem(name, "not found");
 351         }
 352
 353         packages.insert(PackageMap::value_type(name, pkg));
 354
 355         return pkg;
 356 }
 357
 358 Target *Builder::get_target(const string &n) const
 359 {
 360         // XXX Used for getting targets by path.  get_target(const FS::Path &)?
 361         TargetMap::const_iterator i=targets.find(n);
 362         if(i!=targets.end())
 363                 return i->second;
 364         return 0;
 365 }
 366
 367 Target *Builder::get_header(const string &include, const FS::Path &from, const list<string> &path)
 368 {
 369         string hash(8, 0);
 370         if(include[0]=='\"')
 371                 update_hash(hash, from.str());
 372         for(list<string>::const_iterator i=path.begin(); i!=path.end(); ++i)
 373                 update_hash(hash, *i);
 374
 375         string id=hash+include;
 376         TargetMap::iterator i=includes.find(id);
 377         if(i!=includes.end())
 378                 return i->second;
 379
 380         static string cxx_ver;
 381         if(cxx_ver.empty())
 382         {
 383                 StringList argv;
 384                 argv.push_back(current_arch->get_tool("CXX"));
 385                 argv.push_back("--version");
 386                 cxx_ver=Regex("[0-9]\\.[0-9.]+").match(run_command(argv))[0].str;
 387                 while(!cxx_ver.empty() && !FS::is_dir(FS::Path("/usr/include/c++")/cxx_ver))
 388                 {
 389                         unsigned dot=cxx_ver.rfind('.');
 390                         if(dot==string::npos)
 391                                 break;
 392                         cxx_ver.erase(dot);
 393                 }
 394                 if(verbose>=5)
 395                         IO::print("C++ version is %s\n", cxx_ver);
 396         }
 397
 398         string fn=include.substr(1);
 399         if(verbose>=5)
 400                 IO::print("Looking for include %s from %s with path %s\n", fn, from, join(path.begin(), path.end()));
 401
 402         StringList syspath;
 403         if(current_arch->is_native())
 404                 syspath.push_back("/usr/include");
 405         else
 406                 syspath.push_back("/usr/"+current_arch->get_prefix()+"/include");
 407         syspath.push_back((FS::Path("/usr/include/c++/")/cxx_ver).str());
 408
 409         Target *tgt=0;
 410         if(include[0]=='\"')
 411                 tgt=get_header(FS::Path(from)/fn);
 412         for(list<string>::const_iterator j=path.begin(); (!tgt && j!=path.end()); ++j)
 413                 tgt=get_header(cwd/ *j/fn);
 414         for(list<string>::const_iterator j=syspath.begin(); (!tgt && j!=syspath.end()); ++j)
 415                 tgt=get_header(FS::Path(*j)/fn);
 416
 417         includes.insert(TargetMap::value_type(id, tgt));
 418
 419         return tgt;
 420 }
 421
 422 Target *Builder::get_library(const string &lib, const list<string> &path, LibMode mode)
 423 {
 424         string hash(8, 0);
 425         for(list<string>::const_iterator i=path.begin(); i!=path.end(); ++i)
 426                 update_hash(hash, *i);
 427
 428         string id=hash+string(1, mode)+lib;
 429         TargetMap::iterator i=libraries.find(id);
 430         if(i!=libraries.end())
 431                 return i->second;
 432
 433         StringList syspath;
 434         if(current_arch->is_native())
 435         {
 436                 syspath.push_back("/lib");
 437                 syspath.push_back("/usr/lib");
 438         }
 439         else
 440                 syspath.push_back("/usr/"+current_arch->get_prefix()+"/lib");
 441
 442         if(verbose>=5)
 443                 IO::print("Looking for library %s with path %s\n", lib, join(path.begin(), path.end()));
 444
 445         Target *tgt=0;
 446         for(StringList::const_iterator j=path.begin(); (!tgt && j!=path.end()); ++j)
 447                 tgt=get_library(lib, cwd/ *j, mode);
 448         for(StringList::iterator j=syspath.begin(); (!tgt && j!=syspath.end()); ++j)
 449                 tgt=get_library(lib, *j, mode);
 450
 451         libraries.insert(TargetMap::value_type(id, tgt));
 452
 453         return tgt;
 454 }
 455
 456 const Architecture &Builder::get_architecture(const string &arch) const
 457 {
 458         ArchMap::const_iterator i=archs.find(arch);
 459         if(i==archs.end())
 460                 throw KeyError("Unknown architecture", arch);
 461
 462         return i->second;
 463 }
 464
 465 void Builder::apply_profile_template(Config &config, const string &pt) const
 466 {
 467         vector<string> parts=split(pt, '-');
 468
 469         for(vector<string>::iterator i=parts.begin(); i!=parts.end(); ++i)
 470         {
 471                 ProfileTemplateMap::const_iterator j=profile_tmpl.find(*i);
 472                 if(j==profile_tmpl.end())
 473                         continue;
 474
 475                 config.update(j->second);
 476         }
 477 }
 478
 479 void Builder::problem(const string &p, const string &d)
 480 {
 481         problems.push_back(Problem(p, d));
 482 }
 483
 484 void Builder::add_target(Target *t)
 485 {
 486         targets.insert(TargetMap::value_type(t->get_name(), t));
 487         new_tgts.push_back(t);
 488 }
 489
 490 void Builder::usage(const char *reason, const char *argv0, bool brief)
 491 {
 492         if(reason)
 493                 IO::print(IO::cerr, "%s\n", reason);
 494
 495         if(brief)
 496                 IO::print(IO::cerr, "Usage: %s\n", usagemsg);
 497         else
 498         {
 499                 IO::print(IO::cerr, "Usage: %s [options] [<target> ...]\n\n", argv0);
 500                 IO::print(IO::cerr, "Options:\n");
 501                 IO::print(IO::cerr, helpmsg);
 502         }
 503 }
 504
 505 FS::Path Builder::get_package_location(const string &name)
 506 {
 507         if(verbose>=3)
 508                 IO::print("Looking for package %s\n", name);
 509
 510         try
 511         {
 512                 // Try to get source directory with pkgconfig
 513                 string srcdir=strip(run_pkgconfig(name, "source"));
 514                 if(!srcdir.empty())
 515                         return srcdir;
 516         }
 517         catch(...)
 518         { }
 519
 520         if(pkg_dirs.empty())
 521         {
 522                 for(list<FS::Path>::const_iterator i=pkg_path.begin(); i!=pkg_path.end(); ++i)
 523                 {
 524                         list<string> files=list_files(*i);
 525                         for(list<string>::const_iterator j=files.begin(); j!=files.end(); ++j)
 526                         {
 527                                 FS::Path full=*i / *j;
 528                                 if(FS::exists(full/"Build"))
 529                                         pkg_dirs.push_back(full);
 530                         }
 531                 }
 532                 if(verbose>=3)
 533                         IO::print("%d packages found in path\n", pkg_dirs.size());
 534         }
 535
 536         bool msp=!name.compare(0, 3, "msp");
 537         for(list<FS::Path>::const_iterator i=pkg_dirs.begin(); i!=pkg_dirs.end(); ++i)
 538         {
 539                 string base=basename(*i);
 540                 unsigned dash=base.rfind('-');
 541
 542                 if(!base.compare(0, dash, name))
 543                         return *i;
 544                 else if(msp && !base.compare(0, dash-3, name, 3, string::npos))
 545                         return *i;
 546         }
 547
 548         return FS::Path();
 549 }
 550
 551 int Builder::load_build_file(const FS::Path &fn)
 552 {
 553         try
 554         {
 555                 IO::BufferedFile in(fn.str());
 556
 557                 if(verbose>=3)
 558                         IO::print("Reading %s\n", fn);
 559
 560                 DataFile::Parser parser(in, fn.str());
 561                 Loader loader(*this, fn.subpath(0, fn.size()-1));
 562                 loader.load(parser);
 563         }
 564         catch(const IO::FileNotFound &)
 565         {
 566                 return -1;
 567         }
 568
 569         return 0;
 570 }
 571
 572 int Builder::create_targets()
 573 {
 574         Target *world=new VirtualTarget(*this, "world");
 575
 576         Target *def_tgt=new VirtualTarget(*this, "default");
 577         world->add_depend(def_tgt);
 578
 579         Target *install=new VirtualTarget(*this, "install");
 580         world->add_depend(install);
 581
 582         Target *tarballs=new VirtualTarget(*this, "tarballs");
 583         world->add_depend(tarballs);
 584
 585         PackageList all_reqs=main_pkg->collect_requires();
 586         for(PackageList::iterator i=all_reqs.begin(); i!=all_reqs.end(); ++i)
 587         {
 588                 SourcePackage *spkg=dynamic_cast<SourcePackage *>(*i);
 589                 if(!spkg)
 590                         continue;
 591
 592                 const ComponentList &components=spkg->get_components();
 593                 for(ComponentList::const_iterator j=components.begin(); j!=components.end(); ++j)
 594                         j->create_targets();
 595
 596                 if(spkg->get_install_flags()&(SourcePackage::LIB|SourcePackage::INCLUDE))
 597                 {
 598                         PkgConfig *pc=new PkgConfig(*this, *spkg);
 599                         install->add_depend(new Install(*this, *spkg, *pc));
 600                 }
 601         }
 602
 603         // Find dependencies until no new targets are created
 604         while(!new_tgts.empty())
 605         {
 606                 Target *tgt=new_tgts.front();
 607                 new_tgts.erase(new_tgts.begin());
 608                 tgt->find_depends();
 609                 if(!tgt->get_depends_ready())
 610                         new_tgts.push_back(tgt);
 611         }
 612
 613         // Apply what-ifs
 614         for(StringList::iterator i=what_if.begin(); i!=what_if.end(); ++i)
 615         {
 616                 Target *tgt=get_target((cwd/ *i).str());
 617                 if(!tgt)
 618                 {
 619                         IO::print(IO::cerr, "Unknown what-if target %s\n", *i);
 620                         return -1;
 621                 }
 622                 tgt->touch();
 623         }
 624
 625         // Make the cmdline target depend on all targets mentioned on the command line
 626         Target *cmdline=new VirtualTarget(*this, "cmdline");
 627         bool build_world=false;
 628         for(list<string>::iterator i=cmdline_targets.begin(); i!=cmdline_targets.end(); ++i)
 629         {
 630                 Target *tgt=get_target(*i);
 631                 if(!tgt)
 632                         tgt=get_target((cwd/ *i).str());
 633                 if(!tgt)
 634                 {
 635                         IO::print("I don't know anything about %s\n", *i);
 636                         return -1;
 637                 }
 638                 if(tgt==world)
 639                         build_world=true;
 640                 cmdline->add_depend(tgt);
 641         }
 642
 643         /* If world is to be built, prepare cmdline.  If not, add cmdline to world
 644         and prepare world.  I don't really like this, but it keeps the graph
 645         acyclic.
 646
 647         XXX Could we skip preparing targets we are not interested in? */
 648         if(build_world)
 649                 cmdline->prepare();
 650         else
 651         {
 652                 world->add_depend(cmdline);
 653                 world->prepare();
 654         }
 655
 656         for(PackageMap::iterator i=packages.begin(); i!=packages.end(); ++i)
 657                 if(SourcePackage *spkg=dynamic_cast<SourcePackage *>(i->second))
 658                         spkg->get_deps_cache().save();
 659
 660         return 0;
 661 }
 662
 663 Target *Builder::get_header(const Msp::FS::Path &fn)
 664 {
 665         Target *tgt=get_target(fn.str());
 666         if(tgt) return tgt;
 667
 668         if(FS::is_reg(fn))
 669         {
 670                 tgt=new SystemHeader(*this, fn.str());
 671                 return tgt;
 672         }
 673         return 0;
 674 }
 675
 676 Target *Builder::get_library(const string &lib, const FS::Path &path, LibMode mode)
 677 {
 678         // Populate a list of candidate filenames
 679         StringList candidates;
 680
 681         if(mode!=ALL_STATIC)
 682         {
 683                 if(current_arch->get_name()=="win32")
 684                 {
 685                         candidates.push_back("lib"+lib+".dll");
 686                         candidates.push_back(lib+".dll");
 687                 }
 688                 else
 689                         candidates.push_back("lib"+lib+".so");
 690         }
 691
 692         /* Static libraries are always considered, since sometimes shared versions
 693         may not be available */
 694         candidates.push_back("lib"+lib+".a");
 695         if(current_arch->get_name()=="win32")
 696                 candidates.push_back("lib"+lib+".dll.a");
 697
 698         for(StringList::iterator i=candidates.begin(); i!=candidates.end(); ++i)
 699         {
 700                 string full=(path/ *i).str();
 701                 Target *tgt=get_target(full);
 702
 703                 if(tgt)
 704                 {
 705                         Target *real_tgt=tgt;
 706                         if(Install *inst=dynamic_cast<Install *>(tgt))
 707                                 real_tgt=&inst->get_source();
 708
 709                         /* Ignore dynamic libraries from local packages unless library mode is
 710                         DYNAMIC */
 711                         if(dynamic_cast<SharedLibrary *>(real_tgt) && mode!=DYNAMIC)
 712                                 continue;
 713                         else if(tgt)
 714                                 return tgt;
 715                 }
 716                 else if(FS::is_reg(full))
 717                 {
 718                         tgt=new SystemLibrary(*this, full);
 719                         return tgt;
 720                 }
 721         }
 722
 723         return 0;
 724 }
 725
 726 int Builder::do_build()
 727 {
 728         Target *cmdline=get_target("cmdline");
 729
 730         unsigned total=cmdline->count_rebuild();
 731         if(!total)
 732         {
 733                 IO::print("Already up to date\n");
 734                 return 0;
 735         }
 736         if(verbose>=1)
 737                 IO::print("Will build %d target%s\n", total, (total!=1 ? "s" : ""));
 738
 739         vector<Action *> actions;
 740
 741         unsigned count=0;
 742
 743         bool fail=false;
 744         bool finish=false;
 745
 746         while(!finish)
 747         {
 748                 if(actions.size()<jobs && !fail)
 749                 {
 750                         Target *tgt=cmdline->get_buildable_target();
 751                         if(tgt)
 752                         {
 753                                 Action *action=tgt->build();
 754                                 if(action)
 755                                         actions.push_back(action);
 756
 757                                 if(show_progress)
 758                                         IO::print("%d of %d target%s built\033[1G", count, total, (total!=1 ? "s" : ""));
 759                         }
 760                         else if(actions.empty())
 761                                 finish=true;
 762                 }
 763                 else
 764                         Time::sleep(10*Time::msec);
 765
 766                 for(unsigned i=0; i<actions.size();)
 767                 {
 768                         int status=actions[i]->check();
 769                         if(status>=0)
 770                         {
 771                                 ++count;
 772
 773                                 delete actions[i];
 774                                 actions.erase(actions.begin()+i);
 775                                 if(status>0)
 776                                         fail=true;
 777                                 if(actions.empty() && fail)
 778                                         finish=true;
 779                         }
 780                         else
 781                                 ++i;
 782                 }
 783         }
 784
 785         if(show_progress)
 786                 IO::print("\033[K");
 787         if(fail)
 788                 IO::print("Build failed\n");
 789         else if(show_progress)
 790                 IO::print("Build complete\n");
 791
 792         return fail;
 793 }
 794
 795 int Builder::do_clean()
 796 {
 797         // Cleaning doesn't care about ordering, so a simpler method can be used
 798
 799         set<Target *> clean_tgts;
 800         TargetList queue;
 801         queue.push_back(get_target("cmdline"));
 802
 803         while(!queue.empty())
 804         {
 805                 Target *tgt=queue.front();
 806                 queue.erase(queue.begin());
 807
 808                 if(tgt->get_buildable() && (tgt->get_package()==main_pkg || clean>=2))
 809                         clean_tgts.insert(tgt);
 810
 811                 const TargetList &deps=tgt->get_depends();
 812                 for(TargetList::const_iterator i=deps.begin(); i!=deps.end(); ++i)
 813                         if(!clean_tgts.count(*i))
 814                                 queue.push_back(*i);
 815         }
 816
 817         for(set<Target *>::iterator i=clean_tgts.begin(); i!=clean_tgts.end(); ++i)
 818                 if(FileTarget *ft=dynamic_cast<FileTarget *>(*i))
 819                 {
 820                         Action *action=new Unlink(*this, *ft);
 821                         while(action->check()<0) ;
 822                         delete action;
 823                 }
 824
 825         return 0;
 826 }
 827
 828 void Builder::package_help()
 829 {
 830         const Config &config=main_pkg->get_config();
 831         const Config::OptionMap &options=config.get_options();
 832
 833         IO::print("Required packages:\n  ");
 834         const PackageList &requires=main_pkg->get_requires();
 835         for(PackageList::const_iterator i=requires.begin(); i!=requires.end(); ++i)
 836         {
 837                 if(i!=requires.begin())
 838                         IO::print(", ");
 839                 IO::print((*i)->get_name());
 840         }
 841         IO::print("\n\nPackage configuration:\n");
 842         for(Config::OptionMap::const_iterator i=options.begin(); i!=options.end(); ++i)
 843         {
 844                 const Config::Option &opt=i->second;
 845                 IO::print("  %s: %s (%s)", opt.name, opt.descr, opt.value);
 846                 if(opt.value!=opt.defv)
 847                         IO::print(" [%s]", opt.defv);
 848                 IO::print("\n");
 849         }
 850 }
 851
 852 Application::RegApp<Builder> Builder::reg;
 853 string Builder::usagemsg;
 854 string Builder::helpmsg;
 855
 856
 857 Builder::Loader::Loader(Builder &b, const FS::Path &s):
 858         bld(b),
 859         src(s)
 860 {
 861         add("architecture", &Loader::architecture);
 862         add("binary_package", &Loader::binpkg);
 863         add("profile", &Loader::profile);
 864         add("package", &Loader::package);
 865 }
 866
 867 void Builder::Loader::architecture(const string &n)
 868 {
 869         Architecture arch(bld, n);
 870         load_sub(arch);
 871         bld.archs.insert(ArchMap::value_type(n, arch));
 872 }
 873
 874 void Builder::Loader::binpkg(const string &n)
 875 {
 876         BinaryPackage *pkg=new BinaryPackage(bld, n);
 877         load_sub(*pkg);
 878         bld.packages.insert(PackageMap::value_type(n, pkg));
 879 }
 880
 881 void Builder::Loader::profile(const string &n)
 882 {
 883         StringMap prf;
 884         ProfileLoader ldr(prf);
 885         load_sub_with(ldr);
 886         bld.profile_tmpl.insert(ProfileTemplateMap::value_type(n, prf));
 887 }
 888
 889 void Builder::Loader::package(const string &n)
 890 {
 891         SourcePackage *pkg=new SourcePackage(bld, n, src);
 892         if(!bld.main_pkg)
 893                 bld.main_pkg=pkg;
 894
 895         load_sub(*pkg);
 896         bld.packages.insert(PackageMap::value_type(n, pkg));
 897 }
 898
 899
 900 Builder::ProfileLoader::ProfileLoader(StringMap &p):
 901         profile(p)
 902 {
 903         add("option", &ProfileLoader::option);
 904 }
 905
 906 void Builder::ProfileLoader::option(const string &o, const string &v)
 907 {
 908         profile.insert(StringMap::value_type(o, v));
 909 }