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 string GnuLinker::Linker::create_build_signature(const BuildInfo &binfo) const
 135 {
 136         string result = FS::basename(executable->get_path());
 137         result += ',';
 138         if(binfo.libmode<=BuildInfo::STATIC)
 139                 result += 't';
 140         else
 141                 result += 'd';
 142         if(binfo.strip)
 143                 result += 's';
 144         if(!binfo.libs.empty())
 145         {
 146                 result += ",l";
 147                 result += join(binfo.libs.begin(), binfo.libs.end(), ",l");
 148         }
 149         return result;
 150 }
 151
 152 void GnuLinker::Linker::do_prepare()
 153 {
 154         Tool &compiler = builder.get_toolchain().get_tool(compiler_tag);
 155         if(dynamic_cast<GnuCompiler *>(&compiler))
 156         {
 157                 compiler.prepare();
 158                 executable = compiler.get_executable();
 159         }
 160 }
 161
 162 Task *GnuLinker::Linker::run(const Target &target) const
 163 {
 164         const Binary &bin = dynamic_cast<const Binary &>(target);
 165
 166         vector<string> argv;
 167         argv.push_back(executable->get_path().str());
 168
 169         FS::Path work_dir = bin.get_component()->get_package().get_source_directory();
 170
 171         if(const SharedLibrary *shlib = dynamic_cast<const SharedLibrary *>(&bin))
 172         {
 173                 argv.push_back("-shared");
 174                 argv.push_back("-fPIC");
 175                 if(architecture->get_system()!="windows" && !shlib->get_soname().empty())
 176                 {
 177                         if(architecture->get_system()=="darwin")
 178                         {
 179                                 argv.push_back("-install_name");
 180                                 argv.push_back(shlib->get_soname());
 181
 182                                 const string &ver = shlib->get_package()->get_version();
 183                                 const string &if_ver = shlib->get_package()->get_interface_version();
 184                                 if(!ver.empty() && !if_ver.empty())
 185                                 {
 186                                         argv.push_back("-current_version");
 187                                         argv.push_back(ver);
 188                                         argv.push_back("-compatibility_version");
 189                                         argv.push_back(if_ver);
 190                                 }
 191                         }
 192                         else
 193                                 argv.push_back("-Wl,-soname,"+shlib->get_soname());
 194                 }
 195         }
 196
 197         BuildInfo binfo;
 198         target.collect_build_info(binfo);
 199
 200         const FS::Path &sysroot = binfo.sysroot;
 201         if(!sysroot.empty())
 202                 argv.push_back("--sysroot="+sysroot.str());
 203
 204         for(BuildInfo::PathList::const_iterator i=binfo.libpath.begin(); i!=binfo.libpath.end(); ++i)
 205                 argv.push_back("-L"+i->str());
 206         if(binfo.strip)
 207                 argv.push_back("-s");
 208         if(binfo.threads && architecture->get_system()!="windows" && architecture->get_system()!="darwin")
 209                 argv.push_back("-pthread");
 210
 211         const Architecture &native_arch = builder.get_native_arch();
 212         if(architecture->is_native() && architecture->get_bits()!=native_arch.get_bits())
 213                 argv.push_back(format("-m%d", architecture->get_bits()));
 214
 215         argv.push_back("-o");
 216         argv.push_back(relative(bin.get_path(), work_dir).str());
 217
 218         for(BuildInfo::WordList::const_iterator i=binfo.keep_symbols.begin(); i!=binfo.keep_symbols.end(); ++i)
 219                 argv.push_back("-u"+*i);
 220
 221         bool static_link_ok = (binfo.libmode<=BuildInfo::STATIC);
 222
 223         if(architecture->get_system()=="windows" && architecture->get_cross_prefix().find("mingw")!=string::npos)
 224                 argv.push_back("-lmingw32");
 225
 226         const Target::Dependencies &depends = target.get_dependencies();
 227         for(Target::Dependencies::const_iterator i=depends.begin(); i!=depends.end(); ++i)
 228         {
 229                 FileTarget *file = dynamic_cast<FileTarget *>(*i);
 230                 Target *tgt = (*i)->get_real_target();
 231
 232                 if(ObjectFile *obj = dynamic_cast<ObjectFile *>(tgt))
 233                         argv.push_back(relative(obj->get_path(), work_dir).str());
 234                 else if(StaticLibrary *stlib = dynamic_cast<StaticLibrary *>(tgt))
 235                         argv.push_back((file?file:stlib)->get_path().str());
 236                 else if(SharedLibrary *shlib = dynamic_cast<SharedLibrary *>(tgt))
 237                 {
 238                         argv.push_back("-l"+shlib->get_libname());
 239                         static_link_ok = false;
 240                 }
 241                 else if(ImportLibrary *imp = dynamic_cast<ImportLibrary *>(tgt))
 242                 {
 243                         shlib = imp->get_shared_library();
 244                         if(shlib)
 245                                 argv.push_back("-l"+shlib->get_libname());
 246                         else
 247                                 argv.push_back((file?file:imp)->get_path().str());
 248                         static_link_ok = false;
 249                 }
 250         }
 251
 252         for(BuildInfo::WordList::const_iterator i=binfo.libs.begin(); i!=binfo.libs.end(); ++i)
 253                 if(i->size()>10 && !i->compare(i->size()-10, 10, ".framework"))
 254                 {
 255                         argv.push_back("-framework");
 256                         argv.push_back(i->substr(0, i->size()-10));
 257                 }
 258
 259         if(static_link_ok)
 260                 argv.push_back("-static");
 261         else if(architecture->get_system()=="windows")
 262                 argv.push_back("-Wl,--enable-auto-import");
 263
 264         return new ExternalTask(argv, work_dir);
 265 }