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         if(architecture->is_native())
  31         {
  32                 system_path.push_back("/lib");
  33                 system_path.push_back("/usr/lib");
  34                 if(architecture->match_name("pc-32-linux"))
  35                         system_path.push_back("/usr/lib/i386-linux-gnu");
  36                 else if(architecture->match_name("pc-64-linux"))
  37                         system_path.push_back("/usr/lib/x86_64-linux-gnu");
  38         }
  39         else
  40                 system_path.push_back("/usr/"+architecture->get_cross_prefix()+"/lib");
  41
  42         default_linker = new Linker(*this, "CC");
  43         cxx_linker = new Linker(*this, "CXX");
  44 }
  45
  46 GnuLinker::~GnuLinker()
  47 {
  48         delete default_linker;
  49         delete cxx_linker;
  50 }
  51
  52 Target *GnuLinker::create_target(const list<Target *> &sources, const string &arg) const
  53 {
  54         if(sources.empty())
  55                 throw invalid_argument("GnuLinker::create_target");
  56         list<ObjectFile *> objs;
  57         Linker *linker = default_linker;
  58         for(list<Target *>::const_iterator i=sources.begin(); i!=sources.end(); ++i)
  59         {
  60                 if(ObjectFile *obj = dynamic_cast<ObjectFile *>(*i))
  61                 {
  62                         objs.push_back(obj);
  63                         if(obj->get_tool()->get_tag()=="CXX")
  64                                 linker = cxx_linker;
  65                 }
  66                 else
  67                         throw invalid_argument("GnuLinker::create_target");
  68         }
  69
  70         const Component &comp = *objs.front()->get_component();
  71         Binary *bin = 0;
  72         if(arg=="shared")
  73         {
  74                 SharedLibrary *shlib = new SharedLibrary(builder, comp, objs);
  75                 if(architecture->get_system()=="windows")
  76                 {
  77                         ExportDefinitions *exp = new ExportDefinitions(builder, comp, *shlib);
  78                         shlib->add_side_effect(*exp);
  79                         const Tool &dlltool = builder.get_toolchain().get_tool("DLL");
  80                         ImportLibrary *imp = dynamic_cast<ImportLibrary *>(dlltool.create_target(*exp));
  81                         shlib->set_import_library(imp);
  82                 }
  83                 bin = shlib;
  84         }
  85         else
  86                 bin = new Executable(builder, comp, objs);
  87         bin->set_tool(*linker);
  88         return bin;
  89 }
  90
  91 Target *GnuLinker::create_install(Target &target) const
  92 {
  93         if(SharedLibrary *shlib = dynamic_cast<SharedLibrary *>(&target))
  94         {
  95                 const Tool &copy = builder.get_toolchain().get_tool("CP");
  96                 InstalledFile *inst_tgt = dynamic_cast<InstalledFile *>(copy.create_target(target));
  97                 if(architecture->get_system()=="windows")
  98                         builder.add_installed_target(*shlib->get_import_library());
  99                 else
 100                 {
 101                         const Pattern &pattern = architecture->get_shared_library_patterns().front();
 102                         string link_name = pattern.apply(shlib->get_libname());
 103                         if(link_name!=FS::basename(inst_tgt->get_path()))
 104                                 inst_tgt->set_symlink(link_name);
 105                 }
 106                 return inst_tgt;
 107         }
 108         else
 109                 return 0;
 110 }
 111
 112 Task *GnuLinker::run(const Target &) const
 113 {
 114         throw logic_error("GnuLinker should not be run directly");
 115 }
 116
 117
 118 GnuLinker::Linker::Linker(GnuLinker &p, const string &compiler_tag):
 119         SubTool(p)
 120 {
 121         const Tool &compiler = builder.get_toolchain().get_tool(compiler_tag);
 122         if(dynamic_cast<const GnuCompiler *>(&compiler))
 123                 executable = compiler.get_executable();
 124         else
 125         {
 126                 string command;
 127                 if(compiler_tag=="CC")
 128                         command = "gcc";
 129                 else if(compiler_tag=="CXX")
 130                         command = "g++";
 131                 else
 132                         throw invalid_argument("GnuLinker::Linker::Linker");
 133                 if(architecture->is_cross())
 134                         command = format("%s-%s", architecture->get_cross_prefix(), command);
 135                 executable = builder.get_vfs().find_binary(command);
 136         }
 137 }
 138
 139 Target *GnuLinker::Linker::create_target(const list<Target *> &sources, const string &arg) const
 140 {
 141         return parent.create_target(sources, arg);
 142 }
 143
 144 Target *GnuLinker::Linker::create_install(Target &target) const
 145 {
 146         return parent.create_install(target);
 147 }
 148
 149 string GnuLinker::Linker::create_build_signature(const BuildInfo &binfo) const
 150 {
 151         string result = FS::basename(executable->get_path());
 152         result += ',';
 153         if(binfo.libmode<=BuildInfo::STATIC)
 154                 result += 't';
 155         else
 156                 result += 'd';
 157         if(binfo.strip)
 158                 result += 's';
 159         result += ",l";
 160         result += join(binfo.libs.begin(), binfo.libs.end(), ",l");
 161         return result;
 162 }
 163
 164 Task *GnuLinker::Linker::run(const Target &target) const
 165 {
 166         const Binary &bin = dynamic_cast<const Binary &>(target);
 167
 168         vector<string> argv;
 169         argv.push_back(executable->get_path().str());
 170
 171         const Component &comp = *bin.get_component();
 172
 173         FS::Path work_dir = comp.get_package().get_source_directory();
 174
 175         if(const SharedLibrary *shlib = dynamic_cast<const SharedLibrary *>(&bin))
 176         {
 177                 argv.push_back("-shared");
 178                 argv.push_back("-fPIC");
 179                 const Target::Dependencies &side_eff = target.get_side_effects();
 180                 for(Target::Dependencies::const_iterator i=side_eff.begin(); i!=side_eff.end(); ++i)
 181                 {
 182                         if(ExportDefinitions *exp = dynamic_cast<ExportDefinitions *>(*i))
 183                                 argv.push_back("-Wl,--output-def,"+relative(exp->get_path(), work_dir).str());
 184                 }
 185                 if(architecture->get_system()!="windows" && !shlib->get_soname().empty())
 186                         argv.push_back("-Wl,-soname,"+shlib->get_soname());
 187         }
 188
 189         const BuildInfo &binfo = comp.get_build_info();
 190         for(BuildInfo::PathList::const_iterator i=binfo.libpath.begin(); i!=binfo.libpath.end(); ++i)
 191                 argv.push_back("-L"+i->str());
 192         if(binfo.strip)
 193                 argv.push_back("-s");
 194         if(binfo.threads)
 195                 argv.push_back("-pthread");
 196
 197         const Architecture &native_arch = builder.get_native_arch();
 198         if(architecture->get_bits()!=native_arch.get_bits())
 199                 argv.push_back(format("-m%d", architecture->get_bits()));
 200
 201         argv.push_back("-o");
 202         argv.push_back(relative(bin.get_path(), work_dir).str());
 203
 204         bool static_link_ok = (binfo.libmode<=BuildInfo::STATIC);
 205
 206         const Target::Dependencies &depends = target.get_dependencies();
 207         for(Target::Dependencies::const_iterator i=depends.begin(); i!=depends.end(); ++i)
 208         {
 209                 Target *tgt = (*i)->get_real_target();
 210
 211                 if(ObjectFile *obj = dynamic_cast<ObjectFile *>(tgt))
 212                         argv.push_back(relative(obj->get_path(), work_dir).str());
 213                 else if(StaticLibrary *stlib = dynamic_cast<StaticLibrary *>(tgt))
 214                         argv.push_back(stlib->get_path().str());
 215                 else if(SharedLibrary *shlib = dynamic_cast<SharedLibrary *>(tgt))
 216                 {
 217                         argv.push_back("-l"+shlib->get_libname());
 218                         static_link_ok = false;
 219                 }
 220                 else if(ImportLibrary *imp = dynamic_cast<ImportLibrary *>(tgt))
 221                 {
 222                         shlib = imp->get_shared_library();
 223                         if(shlib)
 224                                 argv.push_back("-l"+shlib->get_libname());
 225                         else
 226                                 argv.push_back(imp->get_path().str());
 227                         static_link_ok = false;
 228                 }
 229         }
 230
 231         if(static_link_ok)
 232                 argv.push_back("-static");
 233         else if(architecture->get_system()=="windows")
 234                 argv.push_back("-Wl,--enable-auto-import");
 235
 236         return new ExternalTask(argv, work_dir);
 237 }