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         set_command("gcc");
  33         set_run(_run);
  34 }
  35
  36 Target *GnuLinker::create_target(const vector<Target *> &sources, const string &arg)
  37 {
  38         if(sources.empty())
  39                 throw invalid_argument("GnuLinker::create_target");
  40         vector<ObjectFile *> objs;
  41         objs.reserve(sources.size());
  42         for(Target *s: sources)
  43                 objs.push_back(&dynamic_cast<ObjectFile &>(*s));
  44
  45         const Component &comp = *objs.front()->get_component();
  46         Binary *bin = 0;
  47         if(arg=="shared")
  48         {
  49                 SharedLibrary *shlib = new SharedLibrary(builder, comp, objs);
  50                 if(architecture->get_system()=="windows")
  51                 {
  52                         Tool &dlltool = builder.get_toolchain().get_tool("DLL");
  53                         dlltool.create_target(*shlib);
  54                 }
  55                 bin = shlib;
  56         }
  57         else
  58                 bin = new Executable(builder, comp, objs);
  59         bin->set_tool(*this);
  60         return bin;
  61 }
  62
  63 Target *GnuLinker::create_install(Target &target) const
  64 {
  65         if(SharedLibrary *shlib = dynamic_cast<SharedLibrary *>(&target))
  66         {
  67                 Tool &copy = builder.get_toolchain().get_tool("CP");
  68                 InstalledFile *inst_tgt = dynamic_cast<InstalledFile *>(copy.create_target(target));
  69                 if(architecture->get_system()=="windows")
  70                         builder.get_build_graph().add_installed_target(*shlib->get_import_library());
  71                 else
  72                 {
  73                         string link_name = architecture->create_filename<SharedLibrary>(shlib->get_libname());
  74                         if(link_name!=FS::basename(inst_tgt->get_path()))
  75                                 inst_tgt->set_symlink(link_name);
  76                 }
  77                 return inst_tgt;
  78         }
  79         else
  80                 return 0;
  81 }
  82
  83 string GnuLinker::create_build_signature(const BuildInfo &binfo) const
  84 {
  85         string result = Tool::create_build_signature(binfo);
  86         result += ',';
  87         if(binfo.libmode<=BuildInfo::STATIC)
  88                 result += 't';
  89         else
  90                 result += 'd';
  91         if(binfo.strip)
  92                 result += 's';
  93         if(!binfo.libs.empty())
  94         {
  95                 result += ",l";
  96                 result += join(binfo.libs.begin(), binfo.libs.end(), ",l");
  97         }
  98         return result;
  99 }
 100
 101 void GnuLinker::do_prepare()
 102 {
 103         bool path_found = false;
 104         const FS::Path &sysroot = build_info.sysroot;
 105
 106         if(executable)
 107         {
 108                 ExternalTask::Arguments argv;
 109                 argv.push_back(executable->get_path().str());
 110                 argv.push_back("-Wl,--verbose");
 111                 argv.push_back("-nostdlib");
 112                 if(!sysroot.empty())
 113                         argv.push_back("--sysroot="+sysroot.str());
 114
 115                 builder.get_logger().log("auxcommands", "Running %s", join(argv.begin(), argv.end()));
 116                 try
 117                 {
 118                         string output = ExternalTask::run_and_capture_output(argv, FS::Path(), true);
 119                         string::size_type start = 0;
 120                         while(start<output.size())
 121                         {
 122                                 string::size_type search_dir = output.find("SEARCH_DIR(\"", start);
 123                                 if(search_dir==string::npos)
 124                                         break;
 125
 126                                 search_dir += 12;
 127                                 string::size_type end = output.find("\");", search_dir);
 128                                 if(end==string::npos)
 129                                         break;
 130
 131                                 FS::Path path;
 132                                 if(!output.compare(search_dir, 2, "=/"))
 133                                 {
 134                                         search_dir += 2;
 135                                         if(sysroot.empty())
 136                                                 path = "/";
 137                                         else
 138                                                 path = sysroot;
 139                                 }
 140
 141                                 path /= output.substr(search_dir, end-search_dir);
 142                                 builder.get_logger().log("tools", "Got %s system path: %s", tag, path);
 143                                 system_path.push_back(path);
 144                                 path_found = true;
 145
 146                                 start = end+3;
 147                         }
 148                 }
 149                 catch(...)
 150                 { }
 151         }
 152
 153         if(!path_found)
 154         {
 155                 builder.get_logger().log("tools", "No %s system path found, using defaults", tag);
 156                 if(!sysroot.empty())
 157                         system_path.push_back(sysroot/"usr/lib");
 158                 else if(architecture->is_native())
 159                 {
 160                         system_path.push_back("/lib");
 161                         system_path.push_back("/usr/lib");
 162                         if(architecture->match_name("pc-32-linux"))
 163                         {
 164                                 system_path.push_back("/lib/i386-linux-gnu");
 165                                 system_path.push_back("/usr/lib/i386-linux-gnu");
 166                         }
 167                         else if(architecture->match_name("pc-64-linux"))
 168                         {
 169                                 system_path.push_back("/lib/x86_64-linux-gnu");
 170                                 system_path.push_back("/usr/lib/x86_64-linux-gnu");
 171                         }
 172                 }
 173                 else
 174                         system_path.push_back(format("/usr/%s/lib", architecture->get_cross_prefix()));
 175         }
 176 }
 177
 178 Task *GnuLinker::_run(const Binary &bin)
 179 {
 180         const Tool &tool = *bin.get_tool();
 181         const Builder &builder = tool.get_builder();
 182         const Architecture &arch = *tool.get_architecture();
 183
 184         ExternalTask::Arguments argv;
 185         argv.push_back(tool.get_executable()->get_path().str());
 186
 187         FS::Path work_dir = bin.get_component()->get_package().get_source_directory();
 188
 189         if(const SharedLibrary *shlib = dynamic_cast<const SharedLibrary *>(&bin))
 190         {
 191                 argv.push_back("-shared");
 192                 argv.push_back("-fPIC");
 193                 if(arch.get_system()!="windows" && !shlib->get_soname().empty())
 194                 {
 195                         if(arch.get_system()=="darwin")
 196                         {
 197                                 argv.push_back("-install_name");
 198                                 argv.push_back(shlib->get_soname());
 199
 200                                 const string &ver = shlib->get_package()->get_version();
 201                                 const string &if_ver = shlib->get_package()->get_interface_version();
 202                                 if(!ver.empty() && !if_ver.empty())
 203                                 {
 204                                         argv.push_back("-current_version");
 205                                         argv.push_back(ver);
 206                                         argv.push_back("-compatibility_version");
 207                                         argv.push_back(if_ver);
 208                                 }
 209                         }
 210                         else
 211                                 argv.push_back("-Wl,-soname,"+shlib->get_soname());
 212                 }
 213         }
 214
 215         BuildInfo binfo;
 216         bin.collect_build_info(binfo);
 217
 218         const FS::Path &sysroot = binfo.sysroot;
 219         if(!sysroot.empty())
 220                 argv.push_back("--sysroot="+sysroot.str());
 221
 222         FS::Path lib_dir = builder.get_prefix()/"lib";
 223         if(binfo.rpath_mode==BuildInfo::ABSOLUTE)
 224                 argv.push_back("-Wl,-rpath,"+lib_dir.str());
 225         else
 226         {
 227                 if(binfo.rpath_mode==BuildInfo::RELATIVE)
 228                         argv.push_back("-Wl,-rpath,$ORIGIN/../lib");
 229                 argv.push_back("-Wl,-rpath-link,"+lib_dir.str());
 230         }
 231
 232         for(const FS::Path &p: binfo.libpath)
 233                 argv.push_back("-L"+p.str());
 234         if(binfo.strip)
 235                 argv.push_back("-s");
 236         if(binfo.threads && arch.get_system()!="windows" && arch.get_system()!="darwin")
 237                 argv.push_back("-pthread");
 238
 239         const Architecture &native_arch = builder.get_native_arch();
 240         if(arch.is_native() && arch.get_bits()!=native_arch.get_bits())
 241                 argv.push_back(format("-m%d", arch.get_bits()));
 242
 243         argv.push_back("-o");
 244         argv.push_back(relative(bin.get_path(), work_dir).str());
 245
 246         for(const string &s: binfo.keep_symbols)
 247                 argv.push_back("-u"+s);
 248
 249         bool static_link_ok = (binfo.libmode<=BuildInfo::STATIC);
 250
 251         bool has_cplusplus = false;
 252         for(Target *d: bin.get_dependencies())
 253         {
 254                 FileTarget *file = dynamic_cast<FileTarget *>(d);
 255                 Target *tgt = d->get_real_target();
 256
 257                 if(ObjectFile *obj = dynamic_cast<ObjectFile *>(tgt))
 258                 {
 259                         argv.push_back(relative(obj->get_path(), work_dir).str());
 260                         if(obj->get_tool()->get_tag()=="CXX")
 261                                 has_cplusplus = true;
 262                 }
 263                 else if(StaticLibrary *stlib = dynamic_cast<StaticLibrary *>(tgt))
 264                         argv.push_back((file?file:stlib)->get_path().str());
 265                 else if(SharedLibrary *shlib = dynamic_cast<SharedLibrary *>(tgt))
 266                 {
 267                         argv.push_back("-l"+shlib->get_libname());
 268                         static_link_ok = false;
 269                 }
 270                 else if(ImportLibrary *imp = dynamic_cast<ImportLibrary *>(tgt))
 271                 {
 272                         shlib = imp->get_shared_library();
 273                         if(shlib)
 274                                 argv.push_back("-l"+shlib->get_libname());
 275                         else
 276                                 argv.push_back((file?file:imp)->get_path().str());
 277                         static_link_ok = false;
 278                 }
 279         }
 280
 281         for(const string &l: binfo.libs)
 282                 if(l.size()>10 && !l.compare(l.size()-10, 10, ".framework"))
 283                 {
 284                         argv.push_back("-framework");
 285                         argv.push_back(l.substr(0, l.size()-10));
 286                 }
 287
 288         if(has_cplusplus)
 289                 argv.push_back("-lstdc++");
 290
 291         if(static_link_ok)
 292                 argv.push_back("-static");
 293         else
 294         {
 295                 if(has_cplusplus)
 296                 {
 297                         auto i = binfo.libmodes.find("stdc++");
 298                         if(i!=binfo.libmodes.end() && i->second<=BuildInfo::STATIC)
 299                                 argv.push_back("-static-libstdc++");
 300                 }
 301
 302                 if(arch.get_system()=="windows")
 303                         argv.push_back("-Wl,--enable-auto-import");
 304         }
 305
 306         return new ExternalTask(argv, work_dir);
 307 }