plugins/gnu/gnulinker.cpp

   1 #include <stdexcept>
   2 #include <vector>
   3 #include <msp/builder/builder.h>
   4 #include <msp/builder/component.h>
   5 #include <msp/builder/executable.h>
   6 #include <msp/builder/exportdefinitions.h>
   7 #include <msp/builder/importlibrary.h>
   8 #include <msp/builder/installedfile.h>
   9 #include <msp/builder/objectfile.h>
  10 #include <msp/builder/sharedlibrary.h>
  11 #include <msp/builder/sourcepackage.h>
  12 #include <msp/builder/staticlibrary.h>
  13 #include <msp/core/algorithm.h>
  14 #include <msp/fs/dir.h>
  15 #include <msp/fs/utils.h>
  16 #include <msp/strings/format.h>
  17 #include <msp/strings/utils.h>
  18 #include "gnucompiler.h"
  19 #include "gnulinker.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", true);
  33         set_run_external(_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(ToolData &tool) const
 102 {
 103         bool path_found = false;
 104         const FS::Path &sysroot = tool.build_info.sysroot;
 105         const std::string &tool_tag = static_cast<Tool &>(tool).get_tag();
 106
 107         const FileTarget *exe = static_cast<Tool &>(tool).get_executable();
 108         if(exe)
 109         {
 110                 ExternalTask::Arguments argv;
 111                 argv.push_back(exe->get_path().str());
 112                 argv.push_back("-v");
 113                 argv.push_back("-Wl,--verbose");
 114                 argv.push_back("-nostdlib");
 115                 if(!sysroot.empty())
 116                         argv.push_back("--sysroot="+sysroot.str());
 117
 118                 builder.get_logger().log("auxcommands", "Running %s", join(argv.begin(), argv.end()));
 119                 try
 120                 {
 121                         string output = ExternalTask::run_and_capture_output(argv, FS::Path(), true);
 122
 123                         string::size_type lib_path = output.find("LIBRARY_PATH=");
 124                         if(lib_path!=string::npos)
 125                         {
 126                                 string::size_type newline = output.find('\n', lib_path);
 127                                 for(const string &p: split(output.substr(lib_path+13, newline-lib_path-13), ':'))
 128                                 {
 129                                         FS::Path path = strip(p);
 130                                         if(!any_equals(tool.system_path, path))
 131                                         {
 132                                                 builder.get_logger().log("tools", "Got %s frontend system path: %s", tool_tag, path);
 133                                                 tool.system_path.push_back(path);
 134                                         }
 135                                         path_found = true;
 136                                 }
 137                         }
 138
 139                         string::size_type start = 0;
 140                         while(start<output.size())
 141                         {
 142                                 string::size_type search_dir = output.find("SEARCH_DIR(\"", start);
 143                                 if(search_dir==string::npos)
 144                                         break;
 145
 146                                 search_dir += 12;
 147                                 string::size_type end = output.find("\");", search_dir);
 148                                 if(end==string::npos)
 149                                         break;
 150
 151                                 FS::Path path;
 152                                 if(!output.compare(search_dir, 2, "=/"))
 153                                 {
 154                                         search_dir += 2;
 155                                         if(sysroot.empty())
 156                                                 path = "/";
 157                                         else
 158                                                 path = sysroot;
 159                                 }
 160
 161                                 path /= output.substr(search_dir, end-search_dir);
 162                                 if(!any_equals(tool.system_path, path))
 163                                 {
 164                                         builder.get_logger().log("tools", "Got %s implicit system path: %s", tool_tag, path);
 165                                         tool.system_path.push_back(path);
 166                                 }
 167                                 path_found = true;
 168
 169                                 start = end+3;
 170                         }
 171                 }
 172                 catch(...)
 173                 { }
 174         }
 175
 176         if(!path_found)
 177         {
 178                 builder.get_logger().log("tools", "No %s system path found, using defaults", tool_tag);
 179                 if(!sysroot.empty())
 180                         tool.system_path.push_back(sysroot/"usr/lib");
 181                 else if(architecture->is_native())
 182                 {
 183                         tool.system_path.push_back("/lib");
 184                         tool.system_path.push_back("/usr/lib");
 185                         if(architecture->match_name("pc-32-linux"))
 186                         {
 187                                 tool.system_path.push_back("/lib/i386-linux-gnu");
 188                                 tool.system_path.push_back("/usr/lib/i386-linux-gnu");
 189                         }
 190                         else if(architecture->match_name("pc-64-linux"))
 191                         {
 192                                 tool.system_path.push_back("/lib/x86_64-linux-gnu");
 193                                 tool.system_path.push_back("/usr/lib/x86_64-linux-gnu");
 194                         }
 195                 }
 196                 else
 197                         tool.system_path.push_back(format("/usr/%s/lib", architecture->get_cross_prefix()));
 198         }
 199 }
 200
 201 ExternalTask::Arguments GnuLinker::_run(const Binary &bin, FS::Path &work_dir)
 202 {
 203         const Tool &tool = *bin.get_tool();
 204         const Builder &builder = tool.get_builder();
 205         const Architecture &arch = *tool.get_architecture();
 206
 207         ExternalTask::Arguments argv;
 208         argv.push_back(tool.get_executable()->get_path().str());
 209
 210         if(const SharedLibrary *shlib = dynamic_cast<const SharedLibrary *>(&bin))
 211         {
 212                 argv.push_back("-shared");
 213                 argv.push_back("-fPIC");
 214                 if(arch.get_system()!="windows" && !shlib->get_soname().empty())
 215                 {
 216                         if(arch.get_system()=="darwin")
 217                         {
 218                                 argv.push_back("-install_name");
 219                                 argv.push_back(shlib->get_soname());
 220
 221                                 const string &ver = shlib->get_package()->get_version();
 222                                 const string &if_ver = shlib->get_package()->get_interface_version();
 223                                 if(!ver.empty() && !if_ver.empty())
 224                                 {
 225                                         argv.push_back("-current_version");
 226                                         argv.push_back(ver);
 227                                         argv.push_back("-compatibility_version");
 228                                         argv.push_back(if_ver);
 229                                 }
 230                         }
 231                         else
 232                                 argv.push_back("-Wl,-soname,"+shlib->get_soname());
 233                 }
 234         }
 235
 236         BuildInfo binfo;
 237         bin.collect_build_info(binfo);
 238
 239         const FS::Path &sysroot = binfo.sysroot;
 240         if(!sysroot.empty())
 241                 argv.push_back("--sysroot="+sysroot.str());
 242
 243         FS::Path lib_dir = builder.get_prefix()/"lib";
 244         if(binfo.rpath_mode==BuildInfo::ABSOLUTE)
 245                 argv.push_back("-Wl,-rpath,"+lib_dir.str());
 246         else
 247         {
 248                 if(binfo.rpath_mode==BuildInfo::RELATIVE)
 249                         argv.push_back("-Wl,-rpath,$ORIGIN/../lib");
 250                 argv.push_back("-Wl,-rpath-link,"+lib_dir.str());
 251         }
 252
 253         for(const FS::Path &p: binfo.libpath)
 254                 argv.push_back("-L"+p.str());
 255         if(binfo.strip)
 256                 argv.push_back("-s");
 257         if(binfo.threads && arch.get_system()!="windows" && arch.get_system()!="darwin")
 258                 argv.push_back("-pthread");
 259
 260         const Architecture &native_arch = builder.get_native_arch();
 261         if(arch.is_native() && arch.get_bits()!=native_arch.get_bits())
 262                 argv.push_back(format("-m%d", arch.get_bits()));
 263
 264         argv.push_back("-o");
 265         argv.push_back(relative(bin.get_path(), work_dir).str());
 266
 267         for(const string &s: binfo.keep_symbols)
 268                 argv.push_back("-u"+s);
 269
 270         bool static_link_ok = (binfo.libmode<=BuildInfo::STATIC);
 271
 272         bool has_cplusplus = false;
 273         for(Target *d: bin.get_dependencies())
 274         {
 275                 FileTarget *file = dynamic_cast<FileTarget *>(d);
 276                 Target *tgt = d->get_real_target();
 277
 278                 if(ObjectFile *obj = dynamic_cast<ObjectFile *>(tgt))
 279                 {
 280                         argv.push_back(relative(obj->get_path(), work_dir).str());
 281                         if(obj->get_tool()->get_tag()=="CXX")
 282                                 has_cplusplus = true;
 283                 }
 284                 else if(StaticLibrary *stlib = dynamic_cast<StaticLibrary *>(tgt))
 285                         argv.push_back((file?file:stlib)->get_path().str());
 286                 else if(SharedLibrary *shlib = dynamic_cast<SharedLibrary *>(tgt))
 287                 {
 288                         argv.push_back("-l"+shlib->get_libname());
 289                         static_link_ok = false;
 290                 }
 291                 else if(ImportLibrary *imp = dynamic_cast<ImportLibrary *>(tgt))
 292                 {
 293                         shlib = imp->get_shared_library();
 294                         if(shlib)
 295                                 argv.push_back("-l"+shlib->get_libname());
 296                         else
 297                                 argv.push_back((file?file:imp)->get_path().str());
 298                         static_link_ok = false;
 299                 }
 300         }
 301
 302         for(const string &l: binfo.libs)
 303                 if(l.size()>10 && !l.compare(l.size()-10, 10, ".framework"))
 304                 {
 305                         argv.push_back("-framework");
 306                         argv.push_back(l.substr(0, l.size()-10));
 307                 }
 308
 309         if(static_link_ok)
 310                 argv.push_back("-static");
 311         else
 312         {
 313                 if(has_cplusplus)
 314                 {
 315                         auto i = binfo.libmodes.find("stdc++");
 316                         if(i!=binfo.libmodes.end() && i->second<=BuildInfo::STATIC)
 317                                 argv.push_back("-static-libstdc++");
 318                 }
 319         }
 320
 321         return argv;
 322 }