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 "externaltask.h"
  11 #include "gnucompiler.h"
  12 #include "gnulinker.h"
  13 #include "importlibrary.h"
  14 #include "installedfile.h"
  15 #include "objectfile.h"
  16 #include "sharedlibrary.h"
  17 #include "sourcepackage.h"
  18 #include "staticlibrary.h"
  19
  20 using namespace std;
  21 using namespace Msp;
  22
  23 GnuLinker::GnuLinker(Builder &b, const Architecture &a):
  24         Tool(b, a, "LINK")
  25 {
  26         input_suffixes.push_back(".o");
  27         input_suffixes.push_back(".a");
  28
  29         if(architecture->is_native())
  30         {
  31                 system_path.push_back("/lib");
  32                 system_path.push_back("/usr/lib");
  33                 if(architecture->match_name("pc-32-linux"))
  34                         system_path.push_back("/usr/lib/i386-linux-gnu");
  35                 else if(architecture->match_name("pc-64-linux"))
  36                         system_path.push_back("/usr/lib/x86_64-linux-gnu");
  37         }
  38         else
  39                 system_path.push_back("/usr/"+architecture->get_cross_prefix()+"/lib");
  40
  41         default_linker = new Linker(*this, "CC");
  42         cxx_linker = new Linker(*this, "CXX");
  43 }
  44
  45 GnuLinker::~GnuLinker()
  46 {
  47         delete default_linker;
  48         delete cxx_linker;
  49 }
  50
  51 Target *GnuLinker::create_target(const list<Target *> &sources, const string &arg) const
  52 {
  53         if(sources.empty())
  54                 throw invalid_argument("GnuLinker::create_target");
  55         list<ObjectFile *> objs;
  56         Linker *linker = default_linker;
  57         for(list<Target *>::const_iterator i=sources.begin(); i!=sources.end(); ++i)
  58         {
  59                 if(ObjectFile *obj = dynamic_cast<ObjectFile *>(*i))
  60                 {
  61                         objs.push_back(obj);
  62                         if(obj->get_tool()->get_tag()=="CXX")
  63                                 linker = cxx_linker;
  64                 }
  65                 else
  66                         throw invalid_argument("GnuLinker::create_target");
  67         }
  68
  69         const Component &comp = *objs.front()->get_component();
  70         Binary *bin = 0;
  71         if(arg=="shared")
  72                 bin = new SharedLibrary(builder, comp, objs);
  73         else
  74                 bin = new Executable(builder, comp, objs);
  75         bin->set_tool(*linker);
  76         return bin;
  77 }
  78
  79 Target *GnuLinker::create_install(Target &target) const
  80 {
  81         if(SharedLibrary *shlib = dynamic_cast<SharedLibrary *>(&target))
  82         {
  83                 const Tool &copy = builder.get_toolchain().get_tool("CP");
  84                 InstalledFile *inst_tgt = dynamic_cast<InstalledFile *>(copy.create_target(target));
  85                 const Pattern &pattern = architecture->get_shared_library_patterns().front();
  86                 inst_tgt->set_symlink(pattern.apply(shlib->get_libname()));
  87                 return inst_tgt;
  88         }
  89         else
  90                 return 0;
  91 }
  92
  93 Task *GnuLinker::run(const Target &) const
  94 {
  95         throw logic_error("GnuLinker should not be run directly");
  96 }
  97
  98
  99 GnuLinker::Linker::Linker(GnuLinker &p, const string &compiler_tag):
 100         SubTool(p)
 101 {
 102         const Tool &compiler = builder.get_toolchain().get_tool(compiler_tag);
 103         if(dynamic_cast<const GnuCompiler *>(&compiler))
 104                 executable = compiler.get_executable();
 105         else
 106         {
 107                 string command;
 108                 if(compiler_tag=="CC")
 109                         command = "gcc";
 110                 else if(compiler_tag=="CXX")
 111                         command = "g++";
 112                 else
 113                         throw invalid_argument("GnuLinker::Linker::Linker");
 114                 if(architecture->is_cross())
 115                         command = format("%s-%s", architecture->get_cross_prefix(), command);
 116                 executable = builder.get_vfs().find_binary(command);
 117         }
 118 }
 119
 120 Target *GnuLinker::Linker::create_target(const list<Target *> &sources, const string &arg) const
 121 {
 122         return parent.create_target(sources, arg);
 123 }
 124
 125 Target *GnuLinker::Linker::create_install(Target &target) const
 126 {
 127         return parent.create_install(target);
 128 }
 129
 130 string GnuLinker::Linker::create_build_signature(const BuildInfo &binfo) const
 131 {
 132         string result = FS::basename(executable->get_path());
 133         result += ',';
 134         if(binfo.libmode<=BuildInfo::STATIC)
 135                 result += 't';
 136         else
 137                 result += 'd';
 138         if(binfo.strip)
 139                 result += 's';
 140         result += ",l";
 141         result += join(binfo.libs.begin(), binfo.libs.end(), ",l");
 142         return result;
 143 }
 144
 145 Task *GnuLinker::Linker::run(const Target &target) const
 146 {
 147         const Binary &bin = dynamic_cast<const Binary &>(target);
 148
 149         vector<string> argv;
 150         argv.push_back(executable->get_path().str());
 151
 152         const Component &comp = *bin.get_component();
 153
 154         if(const SharedLibrary *shlib = dynamic_cast<const SharedLibrary *>(&bin))
 155         {
 156                 argv.push_back("-shared");
 157                 argv.push_back("-fPIC");
 158                 if(!shlib->get_soname().empty())
 159                         argv.push_back("-Wl,-soname,"+shlib->get_soname());
 160         }
 161
 162         const BuildInfo &binfo = comp.get_build_info();
 163         for(BuildInfo::PathList::const_iterator i=binfo.libpath.begin(); i!=binfo.libpath.end(); ++i)
 164                 argv.push_back("-L"+i->str());
 165         if(binfo.strip)
 166                 argv.push_back("-s");
 167         if(binfo.threads)
 168                 argv.push_back("-pthread");
 169
 170         const Architecture &native_arch = builder.get_native_arch();
 171         if(architecture->get_bits()!=native_arch.get_bits())
 172                 argv.push_back(format("-m%d", architecture->get_bits()));
 173
 174         FS::Path work_dir = comp.get_package().get_source_directory();
 175
 176         argv.push_back("-o");
 177         argv.push_back(relative(bin.get_path(), work_dir).str());
 178
 179         bool static_link_ok = (binfo.libmode<=BuildInfo::STATIC);
 180
 181         const Target::Dependencies &depends = target.get_dependencies();
 182         for(Target::Dependencies::const_iterator i=depends.begin(); i!=depends.end(); ++i)
 183         {
 184                 Target *tgt = (*i)->get_real_target();
 185
 186                 if(ObjectFile *obj = dynamic_cast<ObjectFile *>(tgt))
 187                         argv.push_back(relative(obj->get_path(), work_dir).str());
 188                 else if(StaticLibrary *stlib = dynamic_cast<StaticLibrary *>(tgt))
 189                         argv.push_back(stlib->get_path().str());
 190                 else if(SharedLibrary *shlib = dynamic_cast<SharedLibrary *>(tgt))
 191                 {
 192                         argv.push_back("-l"+shlib->get_libname());
 193                         static_link_ok = false;
 194                 }
 195                 else if(ImportLibrary *imp = dynamic_cast<ImportLibrary *>(tgt))
 196                 {
 197                         argv.push_back(imp->get_path().str());
 198                         static_link_ok = false;
 199                 }
 200         }
 201
 202         if(static_link_ok)
 203                 argv.push_back("-static");
 204         else if(architecture->get_system()=="windows")
 205                 argv.push_back("-Wl,--enable-auto-import");
 206
 207         return new ExternalTask(argv, work_dir);
 208 }