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         const SharedLibrary *shlib = dynamic_cast<const SharedLibrary *>(&bin);
  54
  55         string command = "gcc";
  56
  57         const Target::Dependencies &depends = target.get_depends();
  58         for(Target::Dependencies::const_iterator i=depends.begin(); i!=depends.end(); ++i)
  59                 if(ObjectFile *obj = dynamic_cast<ObjectFile *>(*i))
  60                 {
  61                         const Tool *tool = obj->get_tool();
  62                         if(dynamic_cast<const GnuCxxCompiler *>(tool))
  63                                 command = "g++";
  64                 }
  65
  66         vector<string> argv;
  67         argv.push_back(command);
  68
  69         const Component &comp = *bin.get_component();
  70
  71         if(shlib)
  72         {
  73                 argv.push_back("-shared");
  74                 argv.push_back("-fPIC");
  75                 if(!shlib->get_soname().empty())
  76                         argv.push_back("-Wl,-soname,"+shlib->get_soname());
  77         }
  78         else if(comp.get_package().get_library_mode()==ALL_STATIC)
  79                 argv.push_back("-static");
  80
  81         const BuildInfo &binfo = comp.get_build_info();
  82         for(list<string>::const_iterator i=binfo.libpath.begin(); i!=binfo.libpath.end(); ++i)
  83                 argv.push_back("-L"+*i);
  84         if(binfo.strip)
  85                 argv.push_back("-s");
  86         if(binfo.threads)
  87                 argv.push_back("-pthread");
  88
  89         const Architecture &arch = builder.get_current_arch();
  90         const Architecture &native_arch = builder.get_native_arch();
  91         if(arch.get_bits()!=native_arch.get_bits())
  92                 argv.push_back(format("-m%d", arch.get_bits()));
  93
  94         FS::Path work_dir = comp.get_package().get_source();
  95
  96         argv.push_back("-o");
  97         argv.push_back(relative(bin.get_path(), work_dir).str());
  98         for(Target::Dependencies::const_iterator i=depends.begin(); i!=depends.end(); ++i)
  99         {
 100                 Target *tgt = (*i)->get_real_target();
 101
 102                 if(ObjectFile *obj = dynamic_cast<ObjectFile *>(tgt))
 103                         argv.push_back(relative(obj->get_path(), work_dir).str());
 104                 else if(StaticLibrary *stlib = dynamic_cast<StaticLibrary *>(tgt))
 105                         argv.push_back(stlib->get_path().str());
 106                 else if(Library *lib = dynamic_cast<Library *>(tgt))
 107                         argv.push_back("-l"+lib->get_libname());
 108         }
 109
 110         if(!builder.get_dry_run())
 111                 FS::mkpath(FS::dirname(bin.get_path()), 0755);
 112
 113         return new ExternalTask(argv, work_dir);
 114 }