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 "builder.h"
   7 #include "component.h"
   8 #include "executable.h"
   9 #include "externaltask.h"
  10 #include "gnucxxcompiler.h"
  11 #include "gnulinker.h"
  12 #include "objectfile.h"
  13 #include "sharedlibrary.h"
  14 #include "sourcepackage.h"
  15 #include "staticlibrary.h"
  16
  17 using namespace std;
  18 using namespace Msp;
  19
  20 GnuLinker::GnuLinker(Builder &b):
  21         Tool(b, "LINK")
  22 {
  23         input_suffixes.push_back(".o");
  24         input_suffixes.push_back(".a");
  25
  26         const Architecture &arch = builder.get_current_arch();
  27         if(arch.is_native())
  28         {
  29                 system_path.push_back("/lib");
  30                 system_path.push_back("/usr/lib");
  31                 if(arch.match_name("pc-32-linux"))
  32                         system_path.push_back("/usr/lib/i386-linux-gnu");
  33                 else if(arch.match_name("pc-64-linux"))
  34                         system_path.push_back("/usr/lib/x86_64-linux-gnu");
  35         }
  36         else
  37                 system_path.push_back("/usr/"+arch.get_cross_prefix()+"/lib");
  38 }
  39
  40 Target *GnuLinker::create_target(const list<Target *> &sources, const std::string &arg) const
  41 {
  42         if(sources.empty())
  43                 throw invalid_argument("GnuLinker::create_target");
  44         list<ObjectFile *> objs;
  45         for(list<Target *>::const_iterator i=sources.begin(); i!=sources.end(); ++i)
  46         {
  47                 if(ObjectFile *obj = dynamic_cast<ObjectFile *>(*i))
  48                         objs.push_back(obj);
  49                 else
  50                         throw invalid_argument("GnuLinker::create_target");
  51         }
  52
  53         const Component &comp = objs.front()->get_component();
  54         Binary *bin = 0;
  55         if(arg=="shared")
  56                 bin = new SharedLibrary(builder, comp, objs);
  57         else
  58                 bin = new Executable(builder, comp, objs);
  59         bin->set_tool(*this);
  60         return bin;
  61 }
  62
  63 Task *GnuLinker::run(const Target &target) const
  64 {
  65         const Binary &bin = dynamic_cast<const Binary &>(target);
  66
  67         string command = "gcc";
  68
  69         const Target::Dependencies &depends = target.get_depends();
  70         for(Target::Dependencies::const_iterator i=depends.begin(); i!=depends.end(); ++i)
  71                 if(ObjectFile *obj = dynamic_cast<ObjectFile *>(*i))
  72                 {
  73                         const Tool *tool = obj->get_tool();
  74                         if(tool->get_tag()=="CXX")
  75                                 command = "g++";
  76                 }
  77
  78         vector<string> argv;
  79         argv.push_back(command);
  80
  81         const Component &comp = *bin.get_component();
  82
  83         if(const SharedLibrary *shlib = dynamic_cast<const SharedLibrary *>(&bin))
  84         {
  85                 argv.push_back("-shared");
  86                 argv.push_back("-fPIC");
  87                 if(!shlib->get_soname().empty())
  88                         argv.push_back("-Wl,-soname,"+shlib->get_soname());
  89         }
  90         else if(comp.get_package().get_library_mode()==ALL_STATIC)
  91                 argv.push_back("-static");
  92
  93         const BuildInfo &binfo = comp.get_build_info();
  94         for(BuildInfo::PathList::const_iterator i=binfo.libpath.begin(); i!=binfo.libpath.end(); ++i)
  95                 argv.push_back("-L"+i->str());
  96         if(binfo.strip)
  97                 argv.push_back("-s");
  98         if(binfo.threads)
  99                 argv.push_back("-pthread");
 100
 101         const Architecture &arch = builder.get_current_arch();
 102         const Architecture &native_arch = builder.get_native_arch();
 103         if(arch.get_bits()!=native_arch.get_bits())
 104                 argv.push_back(format("-m%d", arch.get_bits()));
 105
 106         FS::Path work_dir = comp.get_package().get_source();
 107
 108         argv.push_back("-o");
 109         argv.push_back(relative(bin.get_path(), work_dir).str());
 110         for(Target::Dependencies::const_iterator i=depends.begin(); i!=depends.end(); ++i)
 111         {
 112                 Target *tgt = (*i)->get_real_target();
 113
 114                 if(ObjectFile *obj = dynamic_cast<ObjectFile *>(tgt))
 115                         argv.push_back(relative(obj->get_path(), work_dir).str());
 116                 else if(StaticLibrary *stlib = dynamic_cast<StaticLibrary *>(tgt))
 117                         argv.push_back(stlib->get_path().str());
 118                 else if(SharedLibrary *shlib = dynamic_cast<SharedLibrary *>(tgt))
 119                         argv.push_back("-l"+shlib->get_libname());
 120         }
 121
 122         if(!builder.get_dry_run())
 123                 FS::mkpath(FS::dirname(bin.get_path()), 0755);
 124
 125         return new ExternalTask(argv, work_dir);
 126 }