source/gnulinker.cpp

   1 #include <stdexcept>
   2 #include <vector>
   3 #include <msp/fs/dir.h>
   4 #include <msp/fs/utils.h>
   5 #include "builder.h"
   6 #include "component.h"
   7 #include "executable.h"
   8 #include "externaltask.h"
   9 #include "gnucxxcompiler.h"
  10 #include "gnulinker.h"
  11 #include "objectfile.h"
  12 #include "sharedlibrary.h"
  13 #include "sourcepackage.h"
  14 #include "staticlibrary.h"
  15
  16 using namespace std;
  17 using namespace Msp;
  18
  19 GnuLinker::GnuLinker(Builder &b):
  20         Tool(b, "LINK")
  21 {
  22         input_suffixes.push_back(".o");
  23         input_suffixes.push_back(".a");
  24 }
  25
  26 Target *GnuLinker::create_target(const list<Target *> &sources, const std::string &arg) const
  27 {
  28         if(sources.empty())
  29                 throw invalid_argument("GnuLinker::create_target");
  30         list<ObjectFile *> objs;
  31         for(list<Target *>::const_iterator i=sources.begin(); i!=sources.end(); ++i)
  32         {
  33                 if(ObjectFile *obj = dynamic_cast<ObjectFile *>(*i))
  34                         objs.push_back(obj);
  35                 else
  36                         throw invalid_argument("GnuLinker::create_target");
  37         }
  38
  39         const Component &comp = objs.front()->get_component();
  40         Binary *bin = 0;
  41         if(arg=="shared")
  42                 bin = new SharedLibrary(builder, comp, objs);
  43         else
  44                 bin = new Executable(builder, comp, objs);
  45         bin->set_tool(*this);
  46         return bin;
  47 }
  48
  49 Task *GnuLinker::run(const Target &target) const
  50 {
  51         const Binary &bin = dynamic_cast<const Binary &>(target);
  52         const SharedLibrary *shlib = dynamic_cast<const SharedLibrary *>(&bin);
  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(dynamic_cast<const GnuCxxCompiler *>(tool))
  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(shlib)
  71         {
  72                 argv.push_back("-shared");
  73                 if(!shlib->get_soname().empty())
  74                         argv.push_back("-Wl,-soname,"+shlib->get_soname());
  75         }
  76         else if(comp.get_package().get_library_mode()==ALL_STATIC)
  77                 argv.push_back("-static");
  78
  79         const BuildInfo &binfo = comp.get_build_info();
  80         for(list<string>::const_iterator i=binfo.ldflags.begin(); i!=binfo.ldflags.end(); ++i)
  81                 argv.push_back(*i);
  82         for(list<string>::const_iterator i=binfo.libpath.begin(); i!=binfo.libpath.end(); ++i)
  83                 argv.push_back("-L"+*i);
  84
  85         FS::Path work_dir = comp.get_package().get_source();
  86
  87         argv.push_back("-o");
  88         argv.push_back(relative(bin.get_path(), work_dir).str());
  89         for(Target::Dependencies::const_iterator i=depends.begin(); i!=depends.end(); ++i)
  90         {
  91                 Target *tgt = (*i)->get_real_target();
  92
  93                 if(ObjectFile *obj = dynamic_cast<ObjectFile *>(tgt))
  94                         argv.push_back(relative(obj->get_path(), work_dir).str());
  95                 else if(StaticLibrary *stlib = dynamic_cast<StaticLibrary *>(tgt))
  96                         argv.push_back(stlib->get_path().str());
  97                 else if(Library *lib = dynamic_cast<Library *>(tgt))
  98                         argv.push_back("-l"+lib->get_libname());
  99         }
 100
 101         if(!builder.get_dry_run())
 102                 FS::mkpath(FS::dirname(bin.get_path()), 0755);
 103
 104         return new ExternalTask(argv, work_dir);
 105 }