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