source/builder.cpp

   1 #include <fstream>
   2 #include <msp/progress.h>
   3 #include <msp/strconv.h>
   4 #include <msp/strutils.h>
   5 #include <msp/core/error.h>
   6 #include <msp/getopt++/getopt++.h>
   7 #include <msp/parser/parser.h>
   8 #include <msp/path/utils.h>
   9 #include <msp/time/units.h>
  10 #include <msp/time/utils.h>
  11 #include "action.h"
  12 #include "analyzer.h"
  13 #include "builder.h"
  14 #include "executable.h"
  15 #include "header.h"
  16 #include "install.h"
  17 #include "misc.h"
  18 #include "objectfile.h"
  19 #include "package.h"
  20 #include "systemlibrary.h"
  21 #include "virtualtarget.h"
  22
  23 using namespace std;
  24 using namespace Msp;
  25
  26 Builder::Builder(int argc, char **argv):
  27         verbose(1),
  28         cwd(Path::getcwd()),
  29         analyzer(0),
  30         jobs(1),
  31         chrome(false)
  32 {
  33         GetOpt getopt;
  34         getopt.add_option(GetOpt::Option('v', "verbose", GetOpt::NONE));
  35         getopt.add_option(GetOpt::Option('a', "analyze", GetOpt::REQUIRED));
  36         getopt.add_option(GetOpt::Option('b', "build", GetOpt::NONE));
  37         getopt.add_option(GetOpt::Option("max-depth", GetOpt::REQUIRED));
  38         getopt.add_option(GetOpt::Option('n', "dry-run", GetOpt::NONE));
  39         getopt.add_option(GetOpt::Option('W', "what-if", GetOpt::REQUIRED));
  40         getopt.add_option(GetOpt::Option('B', "build-all", GetOpt::NONE));
  41         getopt.add_option(GetOpt::Option('C', "chdir", GetOpt::REQUIRED));
  42         getopt.add_option(GetOpt::Option('j', "jobs", GetOpt::REQUIRED));
  43         getopt.add_option(GetOpt::Option('h', "help", GetOpt::NONE));
  44         getopt.add_option(GetOpt::Option('c', "clean", GetOpt::NONE));
  45         getopt.add_option(GetOpt::Option("chrome", GetOpt::NONE));
  46         getopt.add_option(GetOpt::Option("full-paths", GetOpt::NONE));
  47         int index=getopt(argc, argv);
  48
  49         verbose+=getopt['v'].count();
  50
  51         if(getopt['a'])
  52         {
  53                 analyzer=new Analyzer(*this);
  54
  55                 string mode=getopt['a'].arg();
  56                 if(mode=="deps")
  57                         analyzer->set_mode(Analyzer::DEPS);
  58                 else if(mode=="alldeps")
  59                         analyzer->set_mode(Analyzer::ALLDEPS);
  60                 else if(mode=="rebuild")
  61                         analyzer->set_mode(Analyzer::REBUILD);
  62                 else if(mode=="rdeps")
  63                         analyzer->set_mode(Analyzer::RDEPS);
  64                 else
  65                         throw UsageError("Invalid analysis mode");
  66
  67                 if(getopt["max-depth"])
  68                         analyzer->set_max_depth(strtol(getopt["max-depth"].arg()));
  69                 analyzer->set_full_paths(getopt["full-paths"]);
  70         }
  71
  72         if(getopt['j'])
  73                 jobs=max(strtol(getopt['j'].arg()), 1L);
  74
  75         if(getopt["chrome"])
  76                 chrome=true;
  77
  78         if(getopt['C'])
  79                 chdir(getopt['C'].arg().c_str());
  80
  81         for(int i=index; i<argc; ++i)
  82         {
  83                 string v(argv[i]);
  84                 unsigned equal=v.find('=');
  85                 if(equal!=string::npos)
  86                         cmdline_options.insert(RawOptionMap::value_type(v.substr(0, equal), v.substr(equal+1)));
  87                 else
  88                         cmdline_targets.push_back(argv[i]);
  89         }
  90
  91         if(cmdline_targets.empty())
  92                 cmdline_targets.push_back("default");
  93 }
  94
  95 /**
  96 Gets a package with the specified name, possibly creating it.
  97
  98 @param   n  Package name
  99
 100 @return  Pointer to the package, or 0 if the package could not be located
 101 */
 102 Package *Builder::get_package(const string &n)
 103 {
 104         PackageMap::iterator i=packages.find(n);
 105         if(i!=packages.end())
 106                 return i->second;
 107
 108         list<string> argv;
 109         argv.push_back("pkg-config");
 110         argv.push_back("--variable=source");
 111         argv.push_back(n);
 112         string srcdir=strip(run_command(argv));
 113
 114         PathList dirs;
 115         if(!srcdir.empty())
 116                 dirs.push_back(srcdir);
 117
 118         string dirname=n;
 119         if(!dirname.compare(0, 3, "msp"))
 120                 dirname.erase(0, 3);
 121         dirs.push_back(cwd/dirname);
 122         dirs.push_back(cwd/".."/dirname);
 123
 124         for(PathList::iterator j=dirs.begin(); j!=dirs.end(); ++j)
 125                 if(!load_build_file(*j/"Build"))
 126                 {
 127                         i=packages.find(n);
 128                         if(i!=packages.end())
 129                                 return i->second;
 130                         break;
 131                 }
 132
 133         Package *pkg=Package::create(*this, n);
 134         packages.insert(PackageMap::value_type(n, pkg));
 135         if(pkg)
 136                 new_pkgs.push_back(pkg);
 137
 138         return pkg;
 139 }
 140
 141 /**
 142 Returns the target with the given name, or 0 if no such target exists.
 143 */
 144 Target *Builder::get_target(const string &n)
 145 {
 146         TargetMap::iterator i=targets.find(n);
 147         if(i!=targets.end())
 148                 return i->second;
 149         return 0;
 150 }
 151
 152 Target *Builder::get_header(const string &include, const string &from, const list<string> &path)
 153 {
 154         //XXX Should really hash the include path here
 155         string id=from+":"+include;
 156         TargetMap::iterator i=includes.find(id);
 157         if(i!=includes.end())
 158                 return i->second;
 159
 160         string fn=include.substr(1);
 161         Target *tgt=0;
 162         if(include[0]=='"' && (tgt=check_header(Path::Path(from)/fn)))
 163                 return tgt;
 164         if((tgt=check_header(Path::Path("/usr/include")/fn)))
 165                 return tgt;
 166         if((tgt=check_header(Path::Path("/usr/include/c++/4.1.2")/fn)))
 167                 return tgt;
 168         for(list<string>::const_iterator j=path.begin(); j!=path.end(); ++j)
 169                 if((tgt=check_header(Path::Path(*j)/fn)))
 170                         return tgt;
 171
 172         return 0;
 173 }
 174
 175 Target *Builder::get_library(const string &lib, const list<string> &path)
 176 {
 177         string hash(8, 0);
 178         for(list<string>::const_iterator i=path.begin(); i!=path.end(); ++i)
 179                 for(unsigned j=0; j<i->size(); ++j)
 180                         hash[j%8]^=(*i)[j];
 181
 182         string basename="lib"+lib+".so";
 183         for(list<string>::const_iterator i=path.begin(); i!=path.end(); ++i)
 184         {
 185                 string full=(Path::Path(*i)/basename).str();
 186                 Target *tgt=get_target(full);
 187                 if(tgt) return tgt;
 188
 189                 if(Path::exists(full))
 190                 {
 191                         add_target(tgt=new SystemLibrary(*this, full));
 192                         return tgt;
 193                 }
 194         }
 195
 196         return 0;
 197 }
 198
 199 int Builder::main()
 200 {
 201         if(load_build_file(cwd/"Build"))
 202         {
 203                 cerr<<"No build info here.\n";
 204                 return 1;
 205         }
 206
 207         default_pkg=packages.begin()->second;
 208
 209         while(!new_pkgs.empty())
 210         {
 211                 Package *pkg=new_pkgs.front();
 212                 if(pkg==default_pkg)
 213                         pkg->process_options(cmdline_options);
 214                 new_pkgs.erase(new_pkgs.begin());
 215                 pkg->resolve_refs();
 216         }
 217
 218         std::list<std::string> missing;
 219         for(PackageMap::iterator i=packages.begin(); i!=packages.end(); ++i)
 220                 if(!i->second)
 221                         missing.push_back(i->first);
 222
 223         if(!missing.empty())
 224         {
 225                 missing.sort();
 226                 cerr<<"The following packages were not found on the system:\n";
 227                 for(list<string>::iterator i=missing.begin(); i!=missing.end(); ++i)
 228                         cerr<<"  "<<*i<<'\n';
 229                 cerr<<"Please install them and try again.\n";
 230                 return 1;
 231         }
 232
 233         default_pkg->create_build_info();
 234
 235         if(create_targets())
 236                 return 1;
 237
 238         cout<<packages.size()<<" packages, "<<targets.size()<<" targets\n";
 239         if(verbose>=2)
 240         {
 241                 for(PackageMap::iterator i=packages.begin(); i!=packages.end(); ++i)
 242                 {
 243                         cout<<' '<<i->second->get_name();
 244                         if(i->second->get_buildable())
 245                                 cout<<'*';
 246                         unsigned count=0;
 247                         for(TargetMap::iterator j=targets.begin(); j!=targets.end(); ++j)
 248                                 if(j->second->get_package()==i->second)
 249                                         ++count;
 250                         cout<<" ("<<count<<" targets)\n";
 251                 }
 252         }
 253
 254         if(analyzer)
 255                 analyzer->analyze();
 256
 257         build();
 258
 259         return exit_code;
 260 }
 261
 262 Builder::~Builder()
 263 {
 264         for(PackageMap::iterator i=packages.begin(); i!=packages.end(); ++i)
 265                 delete i->second;
 266         for(TargetMap::iterator i=targets.begin(); i!=targets.end(); ++i)
 267                 delete i->second;
 268         delete analyzer;
 269 }
 270
 271 int Builder::load_build_file(const Path::Path &fn)
 272 {
 273         ifstream in(fn.str().c_str());
 274         if(!in)
 275                 return -1;
 276
 277         Parser::Parser parser(in, fn.str());
 278         Loader loader(*this, fn.subpath(0, fn.size()-1));
 279         loader.load(parser);
 280
 281         return 0;
 282 }
 283
 284 int Builder::create_targets()
 285 {
 286         Target *world=new VirtualTarget(*this, "world");
 287         add_target(world);
 288
 289         Target *def_tgt=new VirtualTarget(*this, "default");
 290         add_target(def_tgt);
 291         world->add_depend(def_tgt);
 292
 293         Target *install=new VirtualTarget(*this, "install");
 294         add_target(install);
 295         world->add_depend(install);
 296
 297         for(PackageMap::iterator i=packages.begin(); i!=packages.end(); ++i)
 298         {
 299                 if(!i->second)
 300                         continue;
 301                 if(!i->second->get_buildable())
 302                         continue;
 303
 304                 const ComponentList &components=i->second->get_components();
 305                 for(ComponentList::const_iterator j=components.begin(); j!=components.end(); ++j)
 306                 {
 307                         PathList files;
 308                         const PathList &sources=j->get_sources();
 309                         for(PathList::const_iterator k=sources.begin(); k!=sources.end(); ++k)
 310                         {
 311                                 list<string> sfiles=list_files(*k);
 312                                 for(list<string>::iterator l=sfiles.begin(); l!=sfiles.end(); ++l)
 313                                         files.push_back(*k / *l);
 314                         }
 315
 316                         Path::Path inst_base=i->second->get_config().get_option("prefix").value;
 317
 318                         bool build_exe=j->get_type()!=Component::HEADERS;
 319
 320                         list<ObjectFile *> objs;
 321                         for(PathList::iterator k=files.begin(); k!=files.end(); ++k)
 322                         {
 323                                 string basename=(*k)[-1];
 324                                 string ext=Path::splitext(basename).ext;
 325                                 if(ext==".cpp" || ext==".c")
 326                                 {
 327                                         if(build_exe)
 328                                         {
 329                                                 SourceFile *src=new SourceFile(*this, &*j, k->str());
 330                                                 add_target(src);
 331
 332                                                 ObjectFile *obj=new ObjectFile(*this, *j, *src);
 333                                                 add_target(obj);
 334                                                 objs.push_back(obj);
 335                                         }
 336                                 }
 337                                 else if(ext==".h")
 338                                 {
 339                                         Target *hdr=get_target(k->str());
 340                                         if(!hdr)
 341                                         {
 342                                                 hdr=new Header(*this, &*j, k->str());
 343                                                 add_target(hdr);
 344                                         }
 345                                         if(!j->get_install_headers().empty())
 346                                         {
 347                                                 Path::Path inst_path=inst_base/"include"/j->get_install_headers()/basename;
 348                                                 Install *inst=new Install(*this, *i->second, *hdr, inst_path.str());
 349                                                 add_target(inst);
 350                                                 install->add_depend(inst);
 351                                         }
 352                                 }
 353                         }
 354
 355                         if(build_exe)
 356                         {
 357                                 Executable *exe=new Executable(*this, *j, objs);
 358                                 add_target(exe);
 359                                 if(i->second==default_pkg)
 360                                         def_tgt->add_depend(exe);
 361                                 else
 362                                         world->add_depend(exe);
 363
 364                                 if(j->get_install())
 365                                 {
 366                                         string inst_dir;
 367                                         if(j->get_type()==Component::PROGRAM)
 368                                                 inst_dir="bin";
 369                                         else if(j->get_type()==Component::LIBRARY)
 370                                                 inst_dir="lib";
 371                                         if(!inst_dir.empty())
 372                                         {
 373                                                 Install *inst=new Install(*this, *i->second, *exe, (inst_base/inst_dir/Path::basename(exe->get_name())).str());
 374                                                 add_target(inst);
 375                                                 install->add_depend(inst);
 376                                         }
 377                                 }
 378                         }
 379                 }
 380         }
 381
 382         while(!new_tgts.empty())
 383         {
 384                 Target *tgt=new_tgts.front();
 385                 new_tgts.erase(new_tgts.begin());
 386                 tgt->find_depends();
 387                 if(!tgt->get_depends_ready())
 388                         new_tgts.push_back(tgt);
 389         }
 390
 391         Target *cmdline=new VirtualTarget(*this, "cmdline");
 392         add_target(cmdline);
 393         world->add_depend(cmdline);
 394         for(list<string>::iterator i=cmdline_targets.begin(); i!=cmdline_targets.end(); ++i)
 395         {
 396                 Target *tgt=get_target(*i);
 397                 if(!tgt)
 398                         tgt=get_target((cwd/ *i).str());
 399                 if(!tgt)
 400                 {
 401                         cerr<<"I don't know anything about "<<*i<<'\n';
 402                         return -1;
 403                 }
 404                 cmdline->add_depend(tgt);
 405         }
 406
 407         world->prepare();
 408
 409         return 0;
 410 }
 411
 412 Target *Builder::check_header(const Msp::Path::Path &fn)
 413 {
 414         Target *tgt=get_target(fn.str());
 415         if(tgt) return tgt;
 416
 417         if(Path::exists(fn))
 418         {
 419                 add_target(tgt=new SystemHeader(*this, fn.str()));
 420                 return tgt;
 421         }
 422         return 0;
 423 }
 424
 425 void Builder::add_target(Target *t)
 426 {
 427         targets.insert(TargetMap::value_type(t->get_name(), t));
 428         new_tgts.push_back(t);
 429 }
 430
 431 int Builder::build()
 432 {
 433         Target *cmdline=get_target("cmdline");
 434
 435         unsigned total=cmdline->count_rebuild();
 436         if(!total)
 437         {
 438                 cout<<"Already up to date\n";
 439                 return 0;
 440         }
 441         cout<<"Will build "<<total<<" target(s)\n";
 442
 443         vector<Action *> actions;
 444
 445         //ProgressBar  *progress=0;
 446         if(chrome)
 447         {
 448                 //progress=new ProgressBar(cout, total);
 449                 cout<<"0 targets built\n";
 450         }
 451         unsigned count=0;
 452
 453         bool fail=false;
 454         bool finish=false;
 455
 456         while(!finish)
 457         {
 458                 if(actions.size()<jobs && !fail)
 459                 {
 460                         Target *tgt=cmdline->get_buildable_target();
 461                         if(tgt)
 462                         {
 463                                 /*if(chrome)
 464                                 {
 465                                         cout<<"\e["<<actions.size()+1<<'A';
 466                                         //progress->set(count);
 467                                         cout<<"\e["<<actions.size()+1<<'B';
 468                                 }*/
 469                                 Action *action=tgt->build();
 470                                 if(action)
 471                                         actions.push_back(action);
 472                         }
 473                         else if(actions.empty())
 474                                 finish=true;
 475                 }
 476                 else
 477                         Time::sleep(10*Time::msec);
 478
 479                 for(unsigned i=0; i<actions.size();)
 480                 {
 481                         int status=actions[i]->check();
 482                         if(status>=0)
 483                         {
 484                                 ++count;
 485                                 if(chrome)
 486                                 {
 487                                         cout<<"\e["<<actions.size()+1<<'A';
 488                                         cout<<count<<" targets built\n";
 489                                         if(i)
 490                                                 cout<<"\e["<<i<<"B";
 491                                         cout<<"\e[M";
 492                                         if(i<actions.size()-1)
 493                                                 cout<<"\e["<<actions.size()-i-1<<"B";
 494                                         cout.flush();
 495                                 }
 496                                 delete actions[i];
 497                                 actions.erase(actions.begin()+i);
 498                                 if(status>0)
 499                                         fail=true;
 500                                 if(actions.empty() && fail)
 501                                         finish=true;
 502                         }
 503                         else
 504                                 ++i;
 505                 }
 506         }
 507
 508         //delete progress;
 509
 510         return fail?-1:0;
 511 }
 512
 513 Application::RegApp<Builder> Builder::reg;
 514
 515 Builder::Loader::Loader(Builder &b, const Path::Path &s):
 516         bld(b),
 517         src(s)
 518 {
 519         add("package", &Loader::package);
 520 }
 521
 522 void Builder::Loader::package(const string &n)
 523 {
 524         Package *pkg=new Package(bld, n, src);
 525         load_sub(*pkg);
 526         bld.packages.insert(PackageMap::value_type(n, pkg));
 527         bld.new_pkgs.push_back(pkg);
 528 }
 529