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
  27 Target *GnuLinker::create_target(const list<Target *> &sources, const std::string &arg) const
  28 {
  29         if(sources.empty())
  30                 throw invalid_argument("GnuLinker::create_target");
  31         list<ObjectFile *> objs;
  32         for(list<Target *>::const_iterator i=sources.begin(); i!=sources.end(); ++i)
  33         {
  34                 if(ObjectFile *obj = dynamic_cast<ObjectFile *>(*i))
  35                         objs.push_back(obj);
  36                 else
  37                         throw invalid_argument("GnuLinker::create_target");
  38         }
  39
  40         const Component &comp = objs.front()->get_component();
  41         Binary *bin = 0;
  42         if(arg=="shared")
  43                 bin = new SharedLibrary(builder, comp, objs);
  44         else
  45                 bin = new Executable(builder, comp, objs);
  46         bin->set_tool(*this);
  47         return bin;
  48 }
  49
  50 Task *GnuLinker::run(const Target &target) const
  51 {
  52         const Binary &bin = dynamic_cast<const Binary &>(target);
  53
  54         string command = "gcc";
  55
  56         const Target::Dependencies &depends = target.get_depends();
  57         for(Target::Dependencies::const_iterator i=depends.begin(); i!=depends.end(); ++i)
  58                 if(ObjectFile *obj = dynamic_cast<ObjectFile *>(*i))
  59                 {
  60                         const Tool *tool = obj->get_tool();
  61                         if(tool->get_tag()=="CXX")
  62                                 command = "g++";
  63                 }
  64
  65         vector<string> argv;
  66         argv.push_back(command);
  67
  68         const Component &comp = *bin.get_component();
  69
  70         if(const SharedLibrary *shlib = dynamic_cast<const SharedLibrary *>(&bin))
  71         {
  72                 argv.push_back("-shared");
  73                 argv.push_back("-fPIC");
  74                 if(!shlib->get_soname().empty())
  75                         argv.push_back("-Wl,-soname,"+shlib->get_soname());
  76         }
  77         else if(comp.get_package().get_library_mode()==ALL_STATIC)
  78                 argv.push_back("-static");
  79
  80         const BuildInfo &binfo = comp.get_build_info();
  81         for(list<string>::const_iterator i=binfo.libpath.begin(); i!=binfo.libpath.end(); ++i)
  82                 argv.push_back("-L"+*i);
  83         if(binfo.strip)
  84                 argv.push_back("-s");
  85         if(binfo.threads)
  86                 argv.push_back("-pthread");
  87
  88         const Architecture &arch = builder.get_current_arch();
  89         const Architecture &native_arch = builder.get_native_arch();
  90         if(arch.get_bits()!=native_arch.get_bits())
  91                 argv.push_back(format("-m%d", arch.get_bits()));
  92
  93         FS::Path work_dir = comp.get_package().get_source();
  94
  95         argv.push_back("-o");
  96         argv.push_back(relative(bin.get_path(), work_dir).str());
  97         for(Target::Dependencies::const_iterator i=depends.begin(); i!=depends.end(); ++i)
  98         {
  99                 Target *tgt = (*i)->get_real_target();
 100
 101                 if(ObjectFile *obj = dynamic_cast<ObjectFile *>(tgt))
 102                         argv.push_back(relative(obj->get_path(), work_dir).str());
 103                 else if(StaticLibrary *stlib = dynamic_cast<StaticLibrary *>(tgt))
 104                         argv.push_back(stlib->get_path().str());
 105                 else if(SharedLibrary *shlib = dynamic_cast<SharedLibrary *>(tgt))
 106                         argv.push_back("-l"+shlib->get_libname());
 107         }
 108
 109         if(!builder.get_dry_run())
 110                 FS::mkpath(FS::dirname(bin.get_path()), 0755);
 111
 112         return new ExternalTask(argv, work_dir);
 113 }