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, const FS::Path &sysroot):
  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         if(!sysroot.empty())
  33                 build_info.sysroot = sysroot;
  34
  35         default_linker = new Linker(*this, "CC");
  36         cxx_linker = new Linker(*this, "CXX");
  37 }
  38
  39 GnuLinker::~GnuLinker()
  40 {
  41         delete default_linker;
  42         delete cxx_linker;
  43 }
  44
  45 Target *GnuLinker::create_target(const list<Target *> &sources, const string &arg)
  46 {
  47         if(sources.empty())
  48                 throw invalid_argument("GnuLinker::create_target");
  49         list<ObjectFile *> objs;
  50         Linker *linker = default_linker;
  51         for(list<Target *>::const_iterator i=sources.begin(); i!=sources.end(); ++i)
  52         {
  53                 if(ObjectFile *obj = dynamic_cast<ObjectFile *>(*i))
  54                 {
  55                         objs.push_back(obj);
  56                         if(obj->get_tool()->get_tag()=="CXX")
  57                                 linker = cxx_linker;
  58                 }
  59                 else
  60                         throw invalid_argument("GnuLinker::create_target");
  61         }
  62
  63         const Component &comp = *objs.front()->get_component();
  64         Binary *bin = 0;
  65         if(arg=="shared")
  66         {
  67                 SharedLibrary *shlib = new SharedLibrary(builder, comp, objs);
  68                 if(architecture->get_system()=="windows")
  69                 {
  70                         Tool &dlltool = builder.get_toolchain().get_tool("DLL");
  71                         dlltool.create_target(*shlib);
  72                 }
  73                 bin = shlib;
  74         }
  75         else
  76                 bin = new Executable(builder, comp, objs);
  77         bin->set_tool(*linker);
  78         return bin;
  79 }
  80
  81 Target *GnuLinker::create_install(Target &target) const
  82 {
  83         if(SharedLibrary *shlib = dynamic_cast<SharedLibrary *>(&target))
  84         {
  85                 Tool &copy = builder.get_toolchain().get_tool("CP");
  86                 InstalledFile *inst_tgt = dynamic_cast<InstalledFile *>(copy.create_target(target));
  87                 if(architecture->get_system()=="windows")
  88                         builder.get_build_graph().add_installed_target(*shlib->get_import_library());
  89                 else
  90                 {
  91                         const Pattern &pattern = architecture->get_shared_library_patterns().front();
  92                         string link_name = pattern.apply(shlib->get_libname());
  93                         if(link_name!=FS::basename(inst_tgt->get_path()))
  94                                 inst_tgt->set_symlink(link_name);
  95                 }
  96                 return inst_tgt;
  97         }
  98         else
  99                 return 0;
 100 }
 101
 102 void GnuLinker::do_prepare()
 103 {
 104         bool path_found = false;
 105         const FS::Path &sysroot = build_info.sysroot;
 106
 107         Tool &compiler = builder.get_toolchain().get_tool("CC");
 108         if(dynamic_cast<GnuCompiler *>(&compiler))
 109         {
 110                 compiler.prepare();
 111                 FileTarget *compiler_exe = compiler.get_executable();
 112                 if(compiler_exe)
 113                 {
 114                         ExternalTask::Arguments argv;
 115                         argv.push_back(compiler_exe->get_path().str());
 116                         argv.push_back("-Wl,--verbose");
 117                         argv.push_back("-nostdlib");
 118                         if(!sysroot.empty())
 119                                 argv.push_back("--sysroot="+sysroot.str());
 120
 121                         builder.get_logger().log("auxcommands", format("Running %s", join(argv.begin(), argv.end())));
 122                         try
 123                         {
 124                                 string output = ExternalTask::run_and_capture_output(argv, FS::Path(), true);
 125                                 string::size_type start = 0;
 126                                 while(start<output.size())
 127                                 {
 128                                         string::size_type search_dir = output.find("SEARCH_DIR(\"", start);
 129                                         if(search_dir==string::npos)
 130                                                 break;
 131
 132                                         search_dir += 12;
 133                                         string::size_type end = output.find("\");", search_dir);
 134                                         if(end==string::npos)
 135                                                 break;
 136
 137                                         FS::Path path;
 138                                         if(!output.compare(search_dir, 2, "=/"))
 139                                         {
 140                                                 search_dir += 2;
 141                                                 if(sysroot.empty())
 142                                                         path = "/";
 143                                                 else
 144                                                         path = sysroot;
 145                                         }
 146
 147                                         path /= output.substr(search_dir, end-search_dir);
 148                                         builder.get_logger().log("tools", format("Got %s system path: %s", tag, path));
 149                                         system_path.push_back(path);
 150                                         path_found = true;
 151
 152                                         start = end+3;
 153                                 }
 154                         }
 155                         catch(...)
 156                         { }
 157                 }
 158         }
 159
 160         if(!path_found)
 161         {
 162                 builder.get_logger().log("tools", format("No %s system path found, using defaults", tag));
 163                 if(!sysroot.empty())
 164                         system_path.push_back(sysroot/"usr/lib");
 165                 else if(architecture->is_native())
 166                 {
 167                         system_path.push_back("/lib");
 168                         system_path.push_back("/usr/lib");
 169                         if(architecture->match_name("pc-32-linux"))
 170                         {
 171                                 system_path.push_back("/lib/i386-linux-gnu");
 172                                 system_path.push_back("/usr/lib/i386-linux-gnu");
 173                         }
 174                         else if(architecture->match_name("pc-64-linux"))
 175                         {
 176                                 system_path.push_back("/lib/x86_64-linux-gnu");
 177                                 system_path.push_back("/usr/lib/x86_64-linux-gnu");
 178                         }
 179                 }
 180                 else
 181                         system_path.push_back("/usr/"+architecture->get_cross_prefix()+"/lib");
 182         }
 183 }
 184
 185 Task *GnuLinker::run(const Target &) const
 186 {
 187         throw logic_error("GnuLinker should not be run directly");
 188 }
 189
 190
 191 GnuLinker::Linker::Linker(GnuLinker &p, const string &ct):
 192         SubTool(p),
 193         compiler_tag(ct)
 194 {
 195         if(compiler_tag=="CC")
 196                 set_command("gcc", true);
 197         else if(compiler_tag=="CXX")
 198                 set_command("g++", true);
 199         else
 200                 throw invalid_argument("GnuLinker::Linker::Linker");
 201 }
 202
 203 string GnuLinker::Linker::create_build_signature(const BuildInfo &binfo) const
 204 {
 205         string result = FS::basename(executable->get_path());
 206         result += ',';
 207         if(binfo.libmode<=BuildInfo::STATIC)
 208                 result += 't';
 209         else
 210                 result += 'd';
 211         if(binfo.strip)
 212                 result += 's';
 213         if(!binfo.libs.empty())
 214         {
 215                 result += ",l";
 216                 result += join(binfo.libs.begin(), binfo.libs.end(), ",l");
 217         }
 218         return result;
 219 }
 220
 221 void GnuLinker::Linker::do_prepare()
 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         for(BuildInfo::PathList::const_iterator i=binfo.libpath.begin(); i!=binfo.libpath.end(); ++i)
 274                 argv.push_back("-L"+i->str());
 275         if(binfo.strip)
 276                 argv.push_back("-s");
 277         if(binfo.threads && architecture->get_system()!="windows" && architecture->get_system()!="darwin")
 278                 argv.push_back("-pthread");
 279
 280         const Architecture &native_arch = builder.get_native_arch();
 281         if(architecture->is_native() && architecture->get_bits()!=native_arch.get_bits())
 282                 argv.push_back(format("-m%d", architecture->get_bits()));
 283
 284         argv.push_back("-o");
 285         argv.push_back(relative(bin.get_path(), work_dir).str());
 286
 287         for(BuildInfo::WordList::const_iterator i=binfo.keep_symbols.begin(); i!=binfo.keep_symbols.end(); ++i)
 288                 argv.push_back("-u"+*i);
 289
 290         bool static_link_ok = (binfo.libmode<=BuildInfo::STATIC);
 291
 292         if(architecture->get_system()=="windows" && architecture->get_cross_prefix().find("mingw")!=string::npos)
 293                 argv.push_back("-lmingw32");
 294
 295         const Target::Dependencies &depends = target.get_dependencies();
 296         for(Target::Dependencies::const_iterator i=depends.begin(); i!=depends.end(); ++i)
 297         {
 298                 FileTarget *file = dynamic_cast<FileTarget *>(*i);
 299                 Target *tgt = (*i)->get_real_target();
 300
 301                 if(ObjectFile *obj = dynamic_cast<ObjectFile *>(tgt))
 302                         argv.push_back(relative(obj->get_path(), work_dir).str());
 303                 else if(StaticLibrary *stlib = dynamic_cast<StaticLibrary *>(tgt))
 304                         argv.push_back((file?file:stlib)->get_path().str());
 305                 else if(SharedLibrary *shlib = dynamic_cast<SharedLibrary *>(tgt))
 306                 {
 307                         argv.push_back("-l"+shlib->get_libname());
 308                         static_link_ok = false;
 309                 }
 310                 else if(ImportLibrary *imp = dynamic_cast<ImportLibrary *>(tgt))
 311                 {
 312                         shlib = imp->get_shared_library();
 313                         if(shlib)
 314                                 argv.push_back("-l"+shlib->get_libname());
 315                         else
 316                                 argv.push_back((file?file:imp)->get_path().str());
 317                         static_link_ok = false;
 318                 }
 319         }
 320
 321         for(BuildInfo::WordList::const_iterator i=binfo.libs.begin(); i!=binfo.libs.end(); ++i)
 322                 if(i->size()>10 && !i->compare(i->size()-10, 10, ".framework"))
 323                 {
 324                         argv.push_back("-framework");
 325                         argv.push_back(i->substr(0, i->size()-10));
 326                 }
 327
 328         if(static_link_ok)
 329                 argv.push_back("-static");
 330         else if(architecture->get_system()=="windows")
 331                 argv.push_back("-Wl,--enable-auto-import");
 332
 333         return new ExternalTask(argv, work_dir);
 334 }