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 to_be_built=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                                                 ++to_be_built;
 268                                 }
 269                         if(count)
 270                         {
 271                                 IO::print(" (%d targets", count);
 272                                 if(to_be_built)
 273                                         IO::print(", %d to be built", to_be_built);
 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                 if(!analyzer)
 289                         IO::print(IO::cerr, "Please fix them and try again.\n");
 290                 return 1;
 291         }
 292
 293         if(clean)
 294                 exit_code=do_clean();
 295         else if(build)
 296                 exit_code=do_build();
 297
 298         return exit_code;
 299 }
 300
 301 string Builder::run_pkgconfig(const string &pkg, const string &what)
 302 {
 303         list<string> argv;
 304         argv.push_back("pkg-config");
 305         if(what=="cflags" || what=="libs")
 306                 argv.push_back("--"+what);
 307         else if(what=="flags")
 308         {
 309                 argv.push_back("--cflags");
 310                 argv.push_back("--libs");
 311         }
 312         else
 313                 argv.push_back("--variable="+what);
 314         argv.push_back(pkg);
 315
 316         if(verbose>=4)
 317                 IO::print("Running %s\n", join(argv.begin(), argv.end()));
 318
 319         int status;
 320         string res=run_command(argv, &status);
 321         if(status)
 322                 throw Exception(format("pkg-config for package %s failed", pkg));
 323
 324         return res;
 325 }
 326
 327 Package *Builder::get_package(const string &name)
 328 {
 329         PackageMap::iterator i=packages.find(format("%s/%s", name, current_arch->get_name()));
 330         if(i==packages.end())
 331                 i=packages.find(name);
 332         if(i!=packages.end())
 333                 return i->second;
 334
 335         FS::Path path=get_package_location(name);
 336         if(!path.empty() && !load_build_file(path/"Build"))
 337         {
 338                 i=packages.find(name);
 339                 if(i!=packages.end())
 340                         return i->second;
 341         }
 342
 343         Package *pkg=0;
 344         try
 345         {
 346                 // Package source not found - create a binary package
 347                 pkg=BinaryPackage::from_pkgconfig(*this, name);
 348         }
 349         catch(...)
 350         {
 351                 problem(name, "not found");
 352         }
 353
 354         packages.insert(PackageMap::value_type(name, pkg));
 355
 356         return pkg;
 357 }
 358
 359 Target *Builder::get_target(const string &n) const
 360 {
 361         // XXX Used for getting targets by path.  get_target(const FS::Path &)?
 362         TargetMap::const_iterator i=targets.find(n);
 363         if(i!=targets.end())
 364                 return i->second;
 365         return 0;
 366 }
 367
 368 Target *Builder::get_header(const string &include, const FS::Path &from, const list<string> &path)
 369 {
 370         string hash(8, 0);
 371         if(include[0]=='\"')
 372                 update_hash(hash, from.str());
 373         for(list<string>::const_iterator i=path.begin(); i!=path.end(); ++i)
 374                 update_hash(hash, *i);
 375
 376         string id=hash+include;
 377         TargetMap::iterator i=includes.find(id);
 378         if(i!=includes.end())
 379                 return i->second;
 380
 381         static string cxx_ver;
 382         if(cxx_ver.empty())
 383         {
 384                 StringList argv;
 385                 argv.push_back(current_arch->get_tool("CXX"));
 386                 argv.push_back("--version");
 387                 cxx_ver=Regex("[0-9]\\.[0-9.]+").match(run_command(argv))[0].str;
 388                 while(!cxx_ver.empty() && !FS::is_dir(FS::Path("/usr/include/c++")/cxx_ver))
 389                 {
 390                         unsigned dot=cxx_ver.rfind('.');
 391                         if(dot==string::npos)
 392                                 break;
 393                         cxx_ver.erase(dot);
 394                 }
 395                 if(verbose>=5)
 396                         IO::print("C++ version is %s\n", cxx_ver);
 397         }
 398
 399         string fn=include.substr(1);
 400         if(verbose>=5)
 401                 IO::print("Looking for include %s from %s with path %s\n", fn, from, join(path.begin(), path.end()));
 402
 403         StringList syspath;
 404         if(current_arch->is_native())
 405                 syspath.push_back("/usr/include");
 406         else
 407                 syspath.push_back("/usr/"+current_arch->get_prefix()+"/include");
 408         syspath.push_back((FS::Path("/usr/include/c++/")/cxx_ver).str());
 409
 410         Target *tgt=0;
 411         if(include[0]=='\"')
 412                 tgt=get_header(FS::Path(from)/fn);
 413         for(list<string>::const_iterator j=path.begin(); (!tgt && j!=path.end()); ++j)
 414                 tgt=get_header(cwd/ *j/fn);
 415         for(list<string>::const_iterator j=syspath.begin(); (!tgt && j!=syspath.end()); ++j)
 416                 tgt=get_header(FS::Path(*j)/fn);
 417
 418         includes.insert(TargetMap::value_type(id, tgt));
 419
 420         return tgt;
 421 }
 422
 423 Target *Builder::get_library(const string &lib, const list<string> &path, LibMode mode)
 424 {
 425         string hash(8, 0);
 426         for(list<string>::const_iterator i=path.begin(); i!=path.end(); ++i)
 427                 update_hash(hash, *i);
 428
 429         string id=hash+string(1, mode)+lib;
 430         TargetMap::iterator i=libraries.find(id);
 431         if(i!=libraries.end())
 432                 return i->second;
 433
 434         StringList syspath;
 435         if(current_arch->is_native())
 436         {
 437                 syspath.push_back("/lib");
 438                 syspath.push_back("/usr/lib");
 439         }
 440         else
 441                 syspath.push_back("/usr/"+current_arch->get_prefix()+"/lib");
 442
 443         if(verbose>=5)
 444                 IO::print("Looking for library %s with path %s\n", lib, join(path.begin(), path.end()));
 445
 446         Target *tgt=0;
 447         for(StringList::const_iterator j=path.begin(); (!tgt && j!=path.end()); ++j)
 448                 tgt=get_library(lib, cwd/ *j, mode);
 449         for(StringList::iterator j=syspath.begin(); (!tgt && j!=syspath.end()); ++j)
 450                 tgt=get_library(lib, *j, mode);
 451
 452         libraries.insert(TargetMap::value_type(id, tgt));
 453
 454         return tgt;
 455 }
 456
 457 const Architecture &Builder::get_architecture(const string &arch) const
 458 {
 459         ArchMap::const_iterator i=archs.find(arch);
 460         if(i==archs.end())
 461                 throw KeyError("Unknown architecture", arch);
 462
 463         return i->second;
 464 }
 465
 466 void Builder::apply_profile_template(Config &config, const string &pt) const
 467 {
 468         vector<string> parts=split(pt, '-');
 469
 470         for(vector<string>::iterator i=parts.begin(); i!=parts.end(); ++i)
 471         {
 472                 ProfileTemplateMap::const_iterator j=profile_tmpl.find(*i);
 473                 if(j==profile_tmpl.end())
 474                         continue;
 475
 476                 config.update(j->second);
 477         }
 478 }
 479
 480 void Builder::problem(const string &p, const string &d)
 481 {
 482         problems.push_back(Problem(p, d));
 483 }
 484
 485 void Builder::add_target(Target *t)
 486 {
 487         targets.insert(TargetMap::value_type(t->get_name(), t));
 488         new_tgts.push_back(t);
 489 }
 490
 491 void Builder::usage(const char *reason, const char *argv0, bool brief)
 492 {
 493         if(reason)
 494                 IO::print(IO::cerr, "%s\n", reason);
 495
 496         if(brief)
 497                 IO::print(IO::cerr, "Usage: %s\n", usagemsg);
 498         else
 499         {
 500                 IO::print(IO::cerr, "Usage: %s [options] [<target> ...]\n\n", argv0);
 501                 IO::print(IO::cerr, "Options:\n");
 502                 IO::print(IO::cerr, helpmsg);
 503         }
 504 }
 505
 506 FS::Path Builder::get_package_location(const string &name)
 507 {
 508         if(verbose>=3)
 509                 IO::print("Looking for package %s\n", name);
 510
 511         try
 512         {
 513                 // Try to get source directory with pkgconfig
 514                 string srcdir=strip(run_pkgconfig(name, "source"));
 515                 if(!srcdir.empty())
 516                         return srcdir;
 517         }
 518         catch(...)
 519         { }
 520
 521         if(pkg_dirs.empty())
 522         {
 523                 for(list<FS::Path>::const_iterator i=pkg_path.begin(); i!=pkg_path.end(); ++i)
 524                 {
 525                         list<string> files=list_files(*i);
 526                         for(list<string>::const_iterator j=files.begin(); j!=files.end(); ++j)
 527                         {
 528                                 FS::Path full=*i / *j;
 529                                 if(FS::exists(full/"Build"))
 530                                         pkg_dirs.push_back(full);
 531                         }
 532                 }
 533                 if(verbose>=3)
 534                         IO::print("%d packages found in path\n", pkg_dirs.size());
 535         }
 536
 537         bool msp=!name.compare(0, 3, "msp");
 538         for(list<FS::Path>::const_iterator i=pkg_dirs.begin(); i!=pkg_dirs.end(); ++i)
 539         {
 540                 string base=basename(*i);
 541                 unsigned dash=base.rfind('-');
 542
 543                 if(!base.compare(0, dash, name))
 544                         return *i;
 545                 else if(msp && !base.compare(0, dash-3, name, 3, string::npos))
 546                         return *i;
 547         }
 548
 549         return FS::Path();
 550 }
 551
 552 int Builder::load_build_file(const FS::Path &fn)
 553 {
 554         try
 555         {
 556                 IO::BufferedFile in(fn.str());
 557
 558                 if(verbose>=3)
 559                         IO::print("Reading %s\n", fn);
 560
 561                 DataFile::Parser parser(in, fn.str());
 562                 Loader loader(*this, fn.subpath(0, fn.size()-1));
 563                 loader.load(parser);
 564         }
 565         catch(const IO::FileNotFound &)
 566         {
 567                 return -1;
 568         }
 569
 570         return 0;
 571 }
 572
 573 int Builder::create_targets()
 574 {
 575         Target *world=new VirtualTarget(*this, "world");
 576
 577         Target *def_tgt=new VirtualTarget(*this, "default");
 578         world->add_depend(def_tgt);
 579
 580         Target *install=new VirtualTarget(*this, "install");
 581         world->add_depend(install);
 582
 583         Target *tarballs=new VirtualTarget(*this, "tarballs");
 584         world->add_depend(tarballs);
 585
 586         PackageList all_reqs=main_pkg->collect_requires();
 587         for(PackageList::iterator i=all_reqs.begin(); i!=all_reqs.end(); ++i)
 588         {
 589                 SourcePackage *spkg=dynamic_cast<SourcePackage *>(*i);
 590                 if(!spkg)
 591                         continue;
 592
 593                 const ComponentList &components=spkg->get_components();
 594                 for(ComponentList::const_iterator j=components.begin(); j!=components.end(); ++j)
 595                         j->create_targets();
 596
 597                 if(spkg->get_install_flags()&(SourcePackage::LIB|SourcePackage::INCLUDE))
 598                 {
 599                         PkgConfig *pc=new PkgConfig(*this, *spkg);
 600                         install->add_depend(new Install(*this, *spkg, *pc));
 601                 }
 602         }
 603
 604         // Find dependencies until no new targets are created
 605         while(!new_tgts.empty())
 606         {
 607                 Target *tgt=new_tgts.front();
 608                 new_tgts.erase(new_tgts.begin());
 609                 tgt->find_depends();
 610                 if(!tgt->get_depends_ready())
 611                         new_tgts.push_back(tgt);
 612         }
 613
 614         // Apply what-ifs
 615         for(StringList::iterator i=what_if.begin(); i!=what_if.end(); ++i)
 616         {
 617                 Target *tgt=get_target((cwd/ *i).str());
 618                 if(!tgt)
 619                 {
 620                         IO::print(IO::cerr, "Unknown what-if target %s\n", *i);
 621                         return -1;
 622                 }
 623                 tgt->touch();
 624         }
 625
 626         // Make the cmdline target depend on all targets mentioned on the command line
 627         Target *cmdline=new VirtualTarget(*this, "cmdline");
 628         bool build_world=false;
 629         for(list<string>::iterator i=cmdline_targets.begin(); i!=cmdline_targets.end(); ++i)
 630         {
 631                 Target *tgt=get_target(*i);
 632                 if(!tgt)
 633                         tgt=get_target((cwd/ *i).str());
 634                 if(!tgt)
 635                 {
 636                         IO::print("I don't know anything about %s\n", *i);
 637                         return -1;
 638                 }
 639                 if(tgt==world)
 640                         build_world=true;
 641                 cmdline->add_depend(tgt);
 642         }
 643
 644         cmdline->prepare();
 645
 646         for(PackageMap::iterator i=packages.begin(); i!=packages.end(); ++i)
 647                 if(SourcePackage *spkg=dynamic_cast<SourcePackage *>(i->second))
 648                         spkg->get_deps_cache().save();
 649
 650         return 0;
 651 }
 652
 653 Target *Builder::get_header(const FS::Path &fn)
 654 {
 655         Target *tgt=get_target(fn.str());
 656         if(tgt) return tgt;
 657
 658         if(FS::is_reg(fn))
 659         {
 660                 tgt=new SystemHeader(*this, fn.str());
 661                 return tgt;
 662         }
 663         return 0;
 664 }
 665
 666 Target *Builder::get_library(const string &lib, const FS::Path &path, LibMode mode)
 667 {
 668         // Populate a list of candidate filenames
 669         StringList candidates;
 670
 671         if(mode!=ALL_STATIC)
 672         {
 673                 if(current_arch->get_name()=="win32")
 674                 {
 675                         candidates.push_back("lib"+lib+".dll");
 676                         candidates.push_back(lib+".dll");
 677                 }
 678                 else
 679                         candidates.push_back("lib"+lib+".so");
 680         }
 681
 682         /* Static libraries are always considered, since sometimes shared versions
 683         may not be available */
 684         candidates.push_back("lib"+lib+".a");
 685         if(current_arch->get_name()=="win32")
 686                 candidates.push_back("lib"+lib+".dll.a");
 687
 688         for(StringList::iterator i=candidates.begin(); i!=candidates.end(); ++i)
 689         {
 690                 string full=(path/ *i).str();
 691                 Target *tgt=get_target(full);
 692
 693                 if(tgt)
 694                 {
 695                         Target *real_tgt=tgt;
 696                         if(Install *inst=dynamic_cast<Install *>(tgt))
 697                                 real_tgt=&inst->get_source();
 698
 699                         /* Ignore dynamic libraries from local packages unless library mode is
 700                         DYNAMIC */
 701                         if(dynamic_cast<SharedLibrary *>(real_tgt) && mode!=DYNAMIC)
 702                                 continue;
 703                         else if(tgt)
 704                                 return tgt;
 705                 }
 706                 else if(FS::is_reg(full))
 707                 {
 708                         tgt=new SystemLibrary(*this, full);
 709                         return tgt;
 710                 }
 711         }
 712
 713         return 0;
 714 }
 715
 716 int Builder::do_build()
 717 {
 718         Target *cmdline=get_target("cmdline");
 719
 720         unsigned total=0;
 721         for(map<string, Target *>::const_iterator i=targets.begin(); i!=targets.end(); ++i)
 722                 if(i->second->is_buildable() && i->second->get_rebuild())
 723                         ++total;
 724
 725         if(!total)
 726         {
 727                 IO::print("Already up to date\n");
 728                 return 0;
 729         }
 730         if(verbose>=1)
 731                 IO::print("Will build %d target%s\n", total, (total!=1 ? "s" : ""));
 732
 733         vector<Action *> actions;
 734
 735         unsigned count=0;
 736
 737         bool fail=false;
 738         bool finish=false;
 739
 740         while(!finish)
 741         {
 742                 if(actions.size()<jobs && !fail)
 743                 {
 744                         Target *tgt=cmdline->get_buildable_target();
 745                         if(tgt)
 746                         {
 747                                 Action *action=tgt->build();
 748                                 if(action)
 749                                         actions.push_back(action);
 750
 751                                 if(show_progress)
 752                                         IO::print("%d of %d target%s built\033[1G", count, total, (total!=1 ? "s" : ""));
 753                         }
 754                         else if(actions.empty())
 755                                 finish=true;
 756                 }
 757                 else
 758                         Time::sleep(10*Time::msec);
 759
 760                 for(unsigned i=0; i<actions.size();)
 761                 {
 762                         int status=actions[i]->check();
 763                         if(status>=0)
 764                         {
 765                                 ++count;
 766
 767                                 delete actions[i];
 768                                 actions.erase(actions.begin()+i);
 769                                 if(status>0)
 770                                         fail=true;
 771                                 if(actions.empty() && fail)
 772                                         finish=true;
 773                         }
 774                         else
 775                                 ++i;
 776                 }
 777         }
 778
 779         if(show_progress)
 780                 IO::print("\033[K");
 781         if(fail)
 782                 IO::print("Build failed\n");
 783         else if(show_progress)
 784                 IO::print("Build complete\n");
 785
 786         return fail;
 787 }
 788
 789 int Builder::do_clean()
 790 {
 791         // Cleaning doesn't care about ordering, so a simpler method can be used
 792
 793         set<Target *> clean_tgts;
 794         TargetList queue;
 795         queue.push_back(get_target("cmdline"));
 796
 797         while(!queue.empty())
 798         {
 799                 Target *tgt=queue.front();
 800                 queue.erase(queue.begin());
 801
 802                 if(tgt->is_buildable() && (tgt->get_package()==main_pkg || clean>=2))
 803                         clean_tgts.insert(tgt);
 804
 805                 const TargetList &deps=tgt->get_depends();
 806                 for(TargetList::const_iterator i=deps.begin(); i!=deps.end(); ++i)
 807                         if(!clean_tgts.count(*i))
 808                                 queue.push_back(*i);
 809         }
 810
 811         for(set<Target *>::iterator i=clean_tgts.begin(); i!=clean_tgts.end(); ++i)
 812                 if(FileTarget *ft=dynamic_cast<FileTarget *>(*i))
 813                 {
 814                         Action *action=new Unlink(*this, *ft);
 815                         while(action->check()<0) ;
 816                         delete action;
 817                 }
 818
 819         return 0;
 820 }
 821
 822 void Builder::package_help()
 823 {
 824         const Config &config=main_pkg->get_config();
 825         const Config::OptionMap &options=config.get_options();
 826
 827         IO::print("Required packages:\n  ");
 828         const PackageList &requires=main_pkg->get_requires();
 829         for(PackageList::const_iterator i=requires.begin(); i!=requires.end(); ++i)
 830         {
 831                 if(i!=requires.begin())
 832                         IO::print(", ");
 833                 IO::print((*i)->get_name());
 834         }
 835         IO::print("\n\nPackage configuration:\n");
 836         for(Config::OptionMap::const_iterator i=options.begin(); i!=options.end(); ++i)
 837         {
 838                 const Config::Option &opt=i->second;
 839                 IO::print("  %s: %s (%s)", opt.name, opt.descr, opt.value);
 840                 if(opt.value!=opt.defv)
 841                         IO::print(" [%s]", opt.defv);
 842                 IO::print("\n");
 843         }
 844 }
 845
 846 Application::RegApp<Builder> Builder::reg;
 847 string Builder::usagemsg;
 848 string Builder::helpmsg;
 849
 850
 851 Builder::Loader::Loader(Builder &b, const FS::Path &s):
 852         bld(b),
 853         src(s)
 854 {
 855         add("architecture", &Loader::architecture);
 856         add("binary_package", &Loader::binpkg);
 857         add("profile", &Loader::profile);
 858         add("package", &Loader::package);
 859 }
 860
 861 void Builder::Loader::architecture(const string &n)
 862 {
 863         Architecture arch(bld, n);
 864         load_sub(arch);
 865         bld.archs.insert(ArchMap::value_type(n, arch));
 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::profile(const string &n)
 876 {
 877         StringMap prf;
 878         ProfileLoader ldr(prf);
 879         load_sub_with(ldr);
 880         bld.profile_tmpl.insert(ProfileTemplateMap::value_type(n, prf));
 881 }
 882
 883 void Builder::Loader::package(const string &n)
 884 {
 885         SourcePackage *pkg=new SourcePackage(bld, n, src);
 886         if(!bld.main_pkg)
 887                 bld.main_pkg=pkg;
 888
 889         load_sub(*pkg);
 890         bld.packages.insert(PackageMap::value_type(n, pkg));
 891 }
 892
 893
 894 Builder::ProfileLoader::ProfileLoader(StringMap &p):
 895         profile(p)
 896 {
 897         add("option", &ProfileLoader::option);
 898 }
 899
 900 void Builder::ProfileLoader::option(const string &o, const string &v)
 901 {
 902         profile.insert(StringMap::value_type(o, v));
 903 }