source/gnulinker.cpp

   1 #include <stdexcept>
   2 #include <vector>
   3 #include <msp/fs/dir.h>
   4 #include <msp/fs/utils.h>
   5 #include <msp/strings/format.h>
   6 #include <msp/strings/utils.h>
   7 #include "builder.h"
   8 #include "component.h"
   9 #include "executable.h"
  10 #include "exportdefinitions.h"
  11 #include "externaltask.h"
  12 #include "gnucompiler.h"
  13 #include "gnulinker.h"
  14 #include "importlibrary.h"
  15 #include "installedfile.h"
  16 #include "objectfile.h"
  17 #include "sharedlibrary.h"
  18 #include "sourcepackage.h"
  19 #include "staticlibrary.h"
  20
  21 using namespace std;
  22 using namespace Msp;
  23
  24 GnuLinker::GnuLinker(Builder &b, const Architecture &a):
  25         Tool(b, a, "LINK")
  26 {
  27         input_suffixes.push_back(".o");
  28         input_suffixes.push_back(".a");
  29
  30         processing_unit = COMPONENT;
  31
  32         default_linker = new Linker(*this, "CC");
  33         cxx_linker = new Linker(*this, "CXX");
  34 }
  35
  36 GnuLinker::~GnuLinker()
  37 {
  38         delete default_linker;
  39         delete cxx_linker;
  40 }
  41
  42 Target *GnuLinker::create_target(const list<Target *> &sources, const string &arg)
  43 {
  44         if(sources.empty())
  45                 throw invalid_argument("GnuLinker::create_target");
  46         list<ObjectFile *> objs;
  47         Linker *linker = default_linker;
  48         for(list<Target *>::const_iterator i=sources.begin(); i!=sources.end(); ++i)
  49         {
  50                 if(ObjectFile *obj = dynamic_cast<ObjectFile *>(*i))
  51                 {
  52                         objs.push_back(obj);
  53                         if(obj->get_tool()->get_tag()=="CXX")
  54                                 linker = cxx_linker;
  55                 }
  56                 else
  57                         throw invalid_argument("GnuLinker::create_target");
  58         }
  59
  60         const Component &comp = *objs.front()->get_component();
  61         Binary *bin = 0;
  62         if(arg=="shared")
  63         {
  64                 SharedLibrary *shlib = new SharedLibrary(builder, comp, objs);
  65                 if(architecture->get_system()=="windows")
  66                 {
  67                         Tool &dlltool = builder.get_toolchain().get_tool("DLL");
  68                         dlltool.create_target(*shlib);
  69                 }
  70                 bin = shlib;
  71         }
  72         else
  73                 bin = new Executable(builder, comp, objs);
  74         bin->set_tool(*linker);
  75         return bin;
  76 }
  77
  78 Target *GnuLinker::create_install(Target &target) const
  79 {
  80         if(SharedLibrary *shlib = dynamic_cast<SharedLibrary *>(&target))
  81         {
  82                 Tool &copy = builder.get_toolchain().get_tool("CP");
  83                 InstalledFile *inst_tgt = dynamic_cast<InstalledFile *>(copy.create_target(target));
  84                 if(architecture->get_system()=="windows")
  85                         builder.get_build_graph().add_installed_target(*shlib->get_import_library());
  86                 else
  87                 {
  88                         string link_name = architecture->create_filename<SharedLibrary>(shlib->get_libname());
  89                         if(link_name!=FS::basename(inst_tgt->get_path()))
  90                                 inst_tgt->set_symlink(link_name);
  91                 }
  92                 return inst_tgt;
  93         }
  94         else
  95                 return 0;
  96 }
  97
  98 void GnuLinker::do_prepare()
  99 {
 100         bool path_found = false;
 101         const FS::Path &sysroot = build_info.sysroot;
 102
 103         Tool &compiler = builder.get_toolchain().get_tool("CC");
 104         if(dynamic_cast<GnuCompiler *>(&compiler))
 105         {
 106                 compiler.prepare();
 107                 FileTarget *compiler_exe = compiler.get_executable();
 108                 if(compiler_exe)
 109                 {
 110                         ExternalTask::Arguments argv;
 111                         argv.push_back(compiler_exe->get_path().str());
 112                         argv.push_back("-Wl,--verbose");
 113                         argv.push_back("-nostdlib");
 114                         if(!sysroot.empty())
 115                                 argv.push_back("--sysroot="+sysroot.str());
 116
 117                         builder.get_logger().log("auxcommands", format("Running %s", join(argv.begin(), argv.end())));
 118                         try
 119                         {
 120                                 string output = ExternalTask::run_and_capture_output(argv, FS::Path(), true);
 121                                 string::size_type start = 0;
 122                                 while(start<output.size())
 123                                 {
 124                                         string::size_type search_dir = output.find("SEARCH_DIR(\"", start);
 125                                         if(search_dir==string::npos)
 126                                                 break;
 127
 128                                         search_dir += 12;
 129                                         string::size_type end = output.find("\");", search_dir);
 130                                         if(end==string::npos)
 131                                                 break;
 132
 133                                         FS::Path path;
 134                                         if(!output.compare(search_dir, 2, "=/"))
 135                                         {
 136                                                 search_dir += 2;
 137                                                 if(sysroot.empty())
 138                                                         path = "/";
 139                                                 else
 140                                                         path = sysroot;
 141                                         }
 142
 143                                         path /= output.substr(search_dir, end-search_dir);
 144                                         builder.get_logger().log("tools", format("Got %s system path: %s", tag, path));
 145                                         system_path.push_back(path);
 146                                         path_found = true;
 147
 148                                         start = end+3;
 149                                 }
 150                         }
 151                         catch(...)
 152                         { }
 153                 }
 154         }
 155
 156         if(!path_found)
 157         {
 158                 builder.get_logger().log("tools", format("No %s system path found, using defaults", tag));
 159                 if(!sysroot.empty())
 160                         system_path.push_back(sysroot/"usr/lib");
 161                 else if(architecture->is_native())
 162                 {
 163                         system_path.push_back("/lib");
 164                         system_path.push_back("/usr/lib");
 165                         if(architecture->match_name("pc-32-linux"))
 166                         {
 167                                 system_path.push_back("/lib/i386-linux-gnu");
 168                                 system_path.push_back("/usr/lib/i386-linux-gnu");
 169                         }
 170                         else if(architecture->match_name("pc-64-linux"))
 171                         {
 172                                 system_path.push_back("/lib/x86_64-linux-gnu");
 173                                 system_path.push_back("/usr/lib/x86_64-linux-gnu");
 174                         }
 175                 }
 176                 else
 177                         system_path.push_back("/usr/"+architecture->get_cross_prefix()+"/lib");
 178         }
 179 }
 180
 181 Task *GnuLinker::run(const Target &) const
 182 {
 183         throw logic_error("GnuLinker should not be run directly");
 184 }
 185
 186
 187 GnuLinker::Linker::Linker(GnuLinker &p, const string &ct):
 188         SubTool(p),
 189         compiler_tag(ct)
 190 {
 191         if(compiler_tag=="CC")
 192                 set_command("gcc", true);
 193         else if(compiler_tag=="CXX")
 194                 set_command("g++", true);
 195         else
 196                 throw invalid_argument("GnuLinker::Linker::Linker");
 197 }
 198
 199 string GnuLinker::Linker::create_build_signature(const BuildInfo &binfo) const
 200 {
 201         string result = FS::basename(executable->get_path());
 202         result += ',';
 203         if(binfo.libmode<=BuildInfo::STATIC)
 204                 result += 't';
 205         else
 206                 result += 'd';
 207         if(binfo.strip)
 208                 result += 's';
 209         if(!binfo.libs.empty())
 210         {
 211                 result += ",l";
 212                 result += join(binfo.libs.begin(), binfo.libs.end(), ",l");
 213         }
 214         return result;
 215 }
 216
 217 void GnuLinker::Linker::do_prepare()
 218 {
 219         parent.prepare();
 220         build_info = parent.get_build_info();
 221         system_path = parent.get_system_path();
 222
 223         Tool &compiler = builder.get_toolchain().get_tool(compiler_tag);
 224         if(dynamic_cast<GnuCompiler *>(&compiler))
 225         {
 226                 compiler.prepare();
 227                 executable = compiler.get_executable();
 228         }
 229 }
 230
 231 Task *GnuLinker::Linker::run(const Target &target) const
 232 {
 233         const Binary &bin = dynamic_cast<const Binary &>(target);
 234
 235         vector<string> argv;
 236         argv.push_back(executable->get_path().str());
 237
 238         FS::Path work_dir = bin.get_component()->get_package().get_source_directory();
 239
 240         if(const SharedLibrary *shlib = dynamic_cast<const SharedLibrary *>(&bin))
 241         {
 242                 argv.push_back("-shared");
 243                 argv.push_back("-fPIC");
 244                 if(architecture->get_system()!="windows" && !shlib->get_soname().empty())
 245                 {
 246                         if(architecture->get_system()=="darwin")
 247                         {
 248                                 argv.push_back("-install_name");
 249                                 argv.push_back(shlib->get_soname());
 250
 251                                 const string &ver = shlib->get_package()->get_version();
 252                                 const string &if_ver = shlib->get_package()->get_interface_version();
 253                                 if(!ver.empty() && !if_ver.empty())
 254                                 {
 255                                         argv.push_back("-current_version");
 256                                         argv.push_back(ver);
 257                                         argv.push_back("-compatibility_version");
 258                                         argv.push_back(if_ver);
 259                                 }
 260                         }
 261                         else
 262                                 argv.push_back("-Wl,-soname,"+shlib->get_soname());
 263                 }
 264         }
 265
 266         BuildInfo binfo;
 267         target.collect_build_info(binfo);
 268
 269         const FS::Path &sysroot = binfo.sysroot;
 270         if(!sysroot.empty())
 271                 argv.push_back("--sysroot="+sysroot.str());
 272
 273         FS::Path lib_dir = builder.get_prefix()/"lib";
 274         if(binfo.rpath_mode==BuildInfo::ABSOLUTE)
 275                 argv.push_back("-Wl,-rpath,"+lib_dir.str());
 276         else
 277         {
 278                 if(binfo.rpath_mode==BuildInfo::RELATIVE)
 279                         argv.push_back("-Wl,-rpath,$ORIGIN/../lib");
 280                 argv.push_back("-Wl,-rpath-link,"+lib_dir.str());
 281         }
 282
 283         for(BuildInfo::PathList::const_iterator i=binfo.libpath.begin(); i!=binfo.libpath.end(); ++i)
 284                 argv.push_back("-L"+i->str());
 285         if(binfo.strip)
 286                 argv.push_back("-s");
 287         if(binfo.threads && architecture->get_system()!="windows" && architecture->get_system()!="darwin")
 288                 argv.push_back("-pthread");
 289
 290         const Architecture &native_arch = builder.get_native_arch();
 291         if(architecture->is_native() && architecture->get_bits()!=native_arch.get_bits())
 292                 argv.push_back(format("-m%d", architecture->get_bits()));
 293
 294         argv.push_back("-o");
 295         argv.push_back(relative(bin.get_path(), work_dir).str());
 296
 297         for(BuildInfo::WordList::const_iterator i=binfo.keep_symbols.begin(); i!=binfo.keep_symbols.end(); ++i)
 298                 argv.push_back("-u"+*i);
 299
 300         bool static_link_ok = (binfo.libmode<=BuildInfo::STATIC);
 301
 302         const Target::Dependencies &depends = target.get_dependencies();
 303         for(Target::Dependencies::const_iterator i=depends.begin(); i!=depends.end(); ++i)
 304         {
 305                 FileTarget *file = dynamic_cast<FileTarget *>(*i);
 306                 Target *tgt = (*i)->get_real_target();
 307
 308                 if(ObjectFile *obj = dynamic_cast<ObjectFile *>(tgt))
 309                         argv.push_back(relative(obj->get_path(), work_dir).str());
 310                 else if(StaticLibrary *stlib = dynamic_cast<StaticLibrary *>(tgt))
 311                         argv.push_back((file?file:stlib)->get_path().str());
 312                 else if(SharedLibrary *shlib = dynamic_cast<SharedLibrary *>(tgt))
 313                 {
 314                         argv.push_back("-l"+shlib->get_libname());
 315                         static_link_ok = false;
 316                 }
 317                 else if(ImportLibrary *imp = dynamic_cast<ImportLibrary *>(tgt))
 318                 {
 319                         shlib = imp->get_shared_library();
 320                         if(shlib)
 321                                 argv.push_back("-l"+shlib->get_libname());
 322                         else
 323                                 argv.push_back((file?file:imp)->get_path().str());
 324                         static_link_ok = false;
 325                 }
 326         }
 327
 328         for(BuildInfo::WordList::const_iterator i=binfo.libs.begin(); i!=binfo.libs.end(); ++i)
 329                 if(i->size()>10 && !i->compare(i->size()-10, 10, ".framework"))
 330                 {
 331                         argv.push_back("-framework");
 332                         argv.push_back(i->substr(0, i->size()-10));
 333                 }
 334
 335         if(static_link_ok)
 336                 argv.push_back("-static");
 337         else
 338         {
 339                 if(compiler_tag=="CXX")
 340                 {
 341                         BuildInfo::LibModeMap::const_iterator i = binfo.libmodes.find("stdc++");
 342                         if(i!=binfo.libmodes.end() && i->second<=BuildInfo::STATIC)
 343                                 argv.push_back("-static-libstdc++");
 344                 }
 345
 346                 if(architecture->get_system()=="windows")
 347                         argv.push_back("-Wl,--enable-auto-import");
 348         }
 349
 350         return new ExternalTask(argv, work_dir);
 351 }