source/gnulinker.cpp

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