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         {
  34                 build_info.sysroot = sysroot;
  35                 system_path.push_back(sysroot/"usr"/"lib");
  36         }
  37         else if(architecture->is_native())
  38         {
  39                 system_path.push_back("/lib");
  40                 system_path.push_back("/usr/lib");
  41                 if(architecture->match_name("pc-32-linux"))
  42                         system_path.push_back("/usr/lib/i386-linux-gnu");
  43                 else if(architecture->match_name("pc-64-linux"))
  44                         system_path.push_back("/usr/lib/x86_64-linux-gnu");
  45         }
  46         else
  47                 system_path.push_back("/usr/"+architecture->get_cross_prefix()+"/lib");
  48
  49         default_linker = new Linker(*this, "CC");
  50         cxx_linker = new Linker(*this, "CXX");
  51 }
  52
  53 GnuLinker::~GnuLinker()
  54 {
  55         delete default_linker;
  56         delete cxx_linker;
  57 }
  58
  59 Target *GnuLinker::create_target(const list<Target *> &sources, const string &arg)
  60 {
  61         if(sources.empty())
  62                 throw invalid_argument("GnuLinker::create_target");
  63         list<ObjectFile *> objs;
  64         Linker *linker = default_linker;
  65         for(list<Target *>::const_iterator i=sources.begin(); i!=sources.end(); ++i)
  66         {
  67                 if(ObjectFile *obj = dynamic_cast<ObjectFile *>(*i))
  68                 {
  69                         objs.push_back(obj);
  70                         if(obj->get_tool()->get_tag()=="CXX")
  71                                 linker = cxx_linker;
  72                 }
  73                 else
  74                         throw invalid_argument("GnuLinker::create_target");
  75         }
  76
  77         const Component &comp = *objs.front()->get_component();
  78         Binary *bin = 0;
  79         if(arg=="shared")
  80         {
  81                 SharedLibrary *shlib = new SharedLibrary(builder, comp, objs);
  82                 if(architecture->get_system()=="windows")
  83                 {
  84                         Tool &dlltool = builder.get_toolchain().get_tool("DLL");
  85                         dlltool.create_target(*shlib);
  86                 }
  87                 bin = shlib;
  88         }
  89         else
  90                 bin = new Executable(builder, comp, objs);
  91         bin->set_tool(*linker);
  92         return bin;
  93 }
  94
  95 Target *GnuLinker::create_install(Target &target) const
  96 {
  97         if(SharedLibrary *shlib = dynamic_cast<SharedLibrary *>(&target))
  98         {
  99                 Tool &copy = builder.get_toolchain().get_tool("CP");
 100                 InstalledFile *inst_tgt = dynamic_cast<InstalledFile *>(copy.create_target(target));
 101                 if(architecture->get_system()=="windows")
 102                         builder.get_build_graph().add_installed_target(*shlib->get_import_library());
 103                 else
 104                 {
 105                         const Pattern &pattern = architecture->get_shared_library_patterns().front();
 106                         string link_name = pattern.apply(shlib->get_libname());
 107                         if(link_name!=FS::basename(inst_tgt->get_path()))
 108                                 inst_tgt->set_symlink(link_name);
 109                 }
 110                 return inst_tgt;
 111         }
 112         else
 113                 return 0;
 114 }
 115
 116 Task *GnuLinker::run(const Target &) const
 117 {
 118         throw logic_error("GnuLinker should not be run directly");
 119 }
 120
 121
 122 GnuLinker::Linker::Linker(GnuLinker &p, const string &ct):
 123         SubTool(p),
 124         compiler_tag(ct)
 125 {
 126         if(compiler_tag=="CC")
 127                 set_command("gcc", true);
 128         else if(compiler_tag=="CXX")
 129                 set_command("g++", true);
 130         else
 131                 throw invalid_argument("GnuLinker::Linker::Linker");
 132 }
 133
 134 Target *GnuLinker::Linker::create_target(const list<Target *> &sources, const string &arg)
 135 {
 136         return parent.create_target(sources, arg);
 137 }
 138
 139 Target *GnuLinker::Linker::create_install(Target &target) const
 140 {
 141         return parent.create_install(target);
 142 }
 143
 144 string GnuLinker::Linker::create_build_signature(const BuildInfo &binfo) const
 145 {
 146         string result = FS::basename(executable->get_path());
 147         result += ',';
 148         if(binfo.libmode<=BuildInfo::STATIC)
 149                 result += 't';
 150         else
 151                 result += 'd';
 152         if(binfo.strip)
 153                 result += 's';
 154         if(!binfo.libs.empty())
 155         {
 156                 result += ",l";
 157                 result += join(binfo.libs.begin(), binfo.libs.end(), ",l");
 158         }
 159         return result;
 160 }
 161
 162 void GnuLinker::Linker::do_prepare()
 163 {
 164         Tool &compiler = builder.get_toolchain().get_tool(compiler_tag);
 165         if(dynamic_cast<GnuCompiler *>(&compiler))
 166         {
 167                 compiler.prepare();
 168                 executable = compiler.get_executable();
 169         }
 170 }
 171
 172 Task *GnuLinker::Linker::run(const Target &target) const
 173 {
 174         const Binary &bin = dynamic_cast<const Binary &>(target);
 175
 176         vector<string> argv;
 177         argv.push_back(executable->get_path().str());
 178
 179         FS::Path work_dir = bin.get_component()->get_package().get_source_directory();
 180
 181         if(const SharedLibrary *shlib = dynamic_cast<const SharedLibrary *>(&bin))
 182         {
 183                 argv.push_back("-shared");
 184                 argv.push_back("-fPIC");
 185                 if(architecture->get_system()!="windows" && !shlib->get_soname().empty())
 186                 {
 187                         if(architecture->get_system()=="darwin")
 188                         {
 189                                 argv.push_back("-install_name");
 190                                 argv.push_back(shlib->get_soname());
 191
 192                                 const string &ver = shlib->get_package()->get_version();
 193                                 const string &if_ver = shlib->get_package()->get_interface_version();
 194                                 if(!ver.empty() && !if_ver.empty())
 195                                 {
 196                                         argv.push_back("-current_version");
 197                                         argv.push_back(ver);
 198                                         argv.push_back("-compatibility_version");
 199                                         argv.push_back(if_ver);
 200                                 }
 201                         }
 202                         else
 203                                 argv.push_back("-Wl,-soname,"+shlib->get_soname());
 204                 }
 205         }
 206
 207         BuildInfo binfo;
 208         target.collect_build_info(binfo);
 209
 210         const FS::Path &sysroot = binfo.sysroot;
 211         if(!sysroot.empty())
 212                 argv.push_back("--sysroot="+sysroot.str());
 213
 214         for(BuildInfo::PathList::const_iterator i=binfo.libpath.begin(); i!=binfo.libpath.end(); ++i)
 215                 argv.push_back("-L"+i->str());
 216         if(binfo.strip)
 217                 argv.push_back("-s");
 218         if(binfo.threads && architecture->get_system()!="windows" && architecture->get_system()!="darwin")
 219                 argv.push_back("-pthread");
 220
 221         const Architecture &native_arch = builder.get_native_arch();
 222         if(architecture->is_native() && architecture->get_bits()!=native_arch.get_bits())
 223                 argv.push_back(format("-m%d", architecture->get_bits()));
 224
 225         argv.push_back("-o");
 226         argv.push_back(relative(bin.get_path(), work_dir).str());
 227
 228         for(BuildInfo::WordList::const_iterator i=binfo.keep_symbols.begin(); i!=binfo.keep_symbols.end(); ++i)
 229                 argv.push_back("-u"+*i);
 230
 231         bool static_link_ok = (binfo.libmode<=BuildInfo::STATIC);
 232
 233         if(architecture->get_system()=="windows" && architecture->get_cross_prefix().find("mingw")!=string::npos)
 234                 argv.push_back("-lmingw32");
 235
 236         const Target::Dependencies &depends = target.get_dependencies();
 237         for(Target::Dependencies::const_iterator i=depends.begin(); i!=depends.end(); ++i)
 238         {
 239                 FileTarget *file = dynamic_cast<FileTarget *>(*i);
 240                 Target *tgt = (*i)->get_real_target();
 241
 242                 if(ObjectFile *obj = dynamic_cast<ObjectFile *>(tgt))
 243                         argv.push_back(relative(obj->get_path(), work_dir).str());
 244                 else if(StaticLibrary *stlib = dynamic_cast<StaticLibrary *>(tgt))
 245                         argv.push_back((file?file:stlib)->get_path().str());
 246                 else if(SharedLibrary *shlib = dynamic_cast<SharedLibrary *>(tgt))
 247                 {
 248                         argv.push_back("-l"+shlib->get_libname());
 249                         static_link_ok = false;
 250                 }
 251                 else if(ImportLibrary *imp = dynamic_cast<ImportLibrary *>(tgt))
 252                 {
 253                         shlib = imp->get_shared_library();
 254                         if(shlib)
 255                                 argv.push_back("-l"+shlib->get_libname());
 256                         else
 257                                 argv.push_back((file?file:imp)->get_path().str());
 258                         static_link_ok = false;
 259                 }
 260         }
 261
 262         for(BuildInfo::WordList::const_iterator i=binfo.libs.begin(); i!=binfo.libs.end(); ++i)
 263                 if(i->size()>10 && !i->compare(i->size()-10, 10, ".framework"))
 264                 {
 265                         argv.push_back("-framework");
 266                         argv.push_back(i->substr(0, i->size()-10));
 267                 }
 268
 269         if(static_link_ok)
 270                 argv.push_back("-static");
 271         else if(architecture->get_system()=="windows")
 272                 argv.push_back("-Wl,--enable-auto-import");
 273
 274         return new ExternalTask(argv, work_dir);
 275 }