Пример #1
0
ToolChain::InvocationInfo
toolchains::Darwin::constructInvocation(const LinkJobAction &job,
                                        const JobContext &context) const {
  assert(context.Output.getPrimaryOutputType() == types::TY_Image &&
         "Invalid linker output type.");

  const Driver &D = getDriver();
  const llvm::Triple &Triple = getTriple();

  InvocationInfo II{"ld"};
  ArgStringList &Arguments = II.Arguments;

  if (context.Args.hasArg(options::OPT_driver_use_filelists) ||
      context.Inputs.size() > TOO_MANY_FILES) {
    Arguments.push_back("-filelist");
    Arguments.push_back(context.getTemporaryFilePath("inputs", "LinkFileList"));
    II.FilelistInfo = {Arguments.back(), types::TY_Object, FilelistInfo::Input};
  } else {
    addPrimaryInputsOfType(Arguments, context.Inputs, types::TY_Object);
  }

  addInputsOfType(Arguments, context.InputActions, types::TY_Object);

  if (context.OI.DebugInfoKind == IRGenDebugInfoKind::Normal) {
    size_t argCount = Arguments.size();
    if (context.OI.CompilerMode == OutputInfo::Mode::SingleCompile)
      addInputsOfType(Arguments, context.Inputs, types::TY_SwiftModuleFile);
    else
      addPrimaryInputsOfType(Arguments, context.Inputs,
                             types::TY_SwiftModuleFile);

    if (Arguments.size() > argCount) {
      assert(argCount + 1 == Arguments.size() &&
             "multiple swiftmodules found for -g");
      Arguments.insert(Arguments.end() - 1, "-add_ast_path");
    }
  }

  switch (job.getKind()) {
  case LinkKind::None:
    llvm_unreachable("invalid link kind");
  case LinkKind::Executable:
    // The default for ld; no extra flags necessary.
    break;
  case LinkKind::DynamicLibrary:
    Arguments.push_back("-dylib");
    break;
  }

  assert(Triple.isOSDarwin());

  // FIXME: If we used Clang as a linker instead of going straight to ld,
  // we wouldn't have to replicate Clang's logic here.
  bool wantsObjCRuntime = false;
  if (Triple.isiOS())
    wantsObjCRuntime = Triple.isOSVersionLT(8);
  else if (Triple.isWatchOS())
    wantsObjCRuntime = Triple.isOSVersionLT(2);
  else if (Triple.isMacOSX())
    wantsObjCRuntime = Triple.isMacOSXVersionLT(10, 10);

  if (context.Args.hasFlag(options::OPT_link_objc_runtime,
                           options::OPT_no_link_objc_runtime,
                           /*default=*/wantsObjCRuntime)) {
    llvm::SmallString<128> ARCLiteLib(D.getSwiftProgramPath());
    llvm::sys::path::remove_filename(ARCLiteLib); // 'swift'
    llvm::sys::path::remove_filename(ARCLiteLib); // 'bin'
    llvm::sys::path::append(ARCLiteLib, "lib", "arc");

    if (!llvm::sys::fs::is_directory(ARCLiteLib)) {
      // If we don't have a 'lib/arc/' directory, find the "arclite" library
      // relative to the Clang in the active Xcode.
      ARCLiteLib.clear();
      if (findXcodeClangPath(ARCLiteLib)) {
        llvm::sys::path::remove_filename(ARCLiteLib); // 'clang'
        llvm::sys::path::remove_filename(ARCLiteLib); // 'bin'
        llvm::sys::path::append(ARCLiteLib, "lib", "arc");
      }
    }

    if (!ARCLiteLib.empty()) {
      llvm::sys::path::append(ARCLiteLib, "libarclite_");
      ARCLiteLib += getPlatformNameForTriple(Triple);
      ARCLiteLib += ".a";

      Arguments.push_back("-force_load");
      Arguments.push_back(context.Args.MakeArgString(ARCLiteLib));

      // Arclite depends on CoreFoundation.
      Arguments.push_back("-framework");
      Arguments.push_back("CoreFoundation");
    } else {
      // FIXME: We should probably diagnose this, but this is not a place where
      // we can emit diagnostics. Silently ignore it for now.
    }
  }

  context.Args.AddAllArgValues(Arguments, options::OPT_Xlinker);
  context.Args.AddAllArgs(Arguments, options::OPT_linker_option_Group);
  context.Args.AddAllArgs(Arguments, options::OPT_F);

  if (context.Args.hasArg(options::OPT_enable_app_extension)) {
    // Keep this string fixed in case the option used by the
    // compiler itself changes.
    Arguments.push_back("-application_extension");
  }

  // Liking in sanitizers will add rpaths, which might negatively interact when
  // other rpaths are involved, so we should make sure we add the rpaths after
  // all user-specified rpaths.
  if (context.OI.SelectedSanitizer == SanitizerKind::Address)
    addLinkSanitizerLibArgsForDarwin(context.Args, Arguments, "asan", *this);

  if (context.OI.SelectedSanitizer == SanitizerKind::Thread)
    addLinkSanitizerLibArgsForDarwin(context.Args, Arguments, "tsan", *this);

  if (context.Args.hasArg(options::OPT_embed_bitcode,
                          options::OPT_embed_bitcode_marker)) {
    Arguments.push_back("-bitcode_bundle");
  }

  if (!context.OI.SDKPath.empty()) {
    Arguments.push_back("-syslibroot");
    Arguments.push_back(context.Args.MakeArgString(context.OI.SDKPath));
  }

  Arguments.push_back("-lobjc");
  Arguments.push_back("-lSystem");

  Arguments.push_back("-arch");
  Arguments.push_back(context.Args.MakeArgString(getTriple().getArchName()));

  // Add the runtime library link path, which is platform-specific and found
  // relative to the compiler.
  SmallString<128> RuntimeLibPath;
  getRuntimeLibraryPath(RuntimeLibPath, context.Args, *this);
  Arguments.push_back("-L");
  Arguments.push_back(context.Args.MakeArgString(RuntimeLibPath));

  if (context.Args.hasArg(options::OPT_profile_generate)) {
    SmallString<128> LibProfile(RuntimeLibPath);
    llvm::sys::path::remove_filename(LibProfile); // remove platform name
    llvm::sys::path::append(LibProfile, "clang", "lib", "darwin");

    StringRef RT;
    if (Triple.isiOS()) {
      if (Triple.isTvOS())
        RT = "tvos";
      else
        RT = "ios";
    } else if (Triple.isWatchOS()) {
      RT = "watchos";
    } else {
      assert(Triple.isMacOSX());
      RT = "osx";
    }

    StringRef Sim;
    if (tripleIsAnySimulator(Triple)) {
      Sim = "sim";
    }

    llvm::sys::path::append(LibProfile,
                            "libclang_rt.profile_" + RT + Sim + ".a");

    // FIXME: Continue accepting the old path for simulator libraries for now.
    if (!Sim.empty() && !llvm::sys::fs::exists(LibProfile)) {
      llvm::sys::path::remove_filename(LibProfile);
      llvm::sys::path::append(LibProfile,
                              "libclang_rt.profile_" + RT + ".a");
    }

    Arguments.push_back(context.Args.MakeArgString(LibProfile));
  }

  // FIXME: We probably shouldn't be adding an rpath here unless we know ahead
  // of time the standard library won't be copied.
  Arguments.push_back("-rpath");
  Arguments.push_back(context.Args.MakeArgString(RuntimeLibPath));

  // FIXME: Properly handle deployment targets.
  assert(Triple.isiOS() || Triple.isWatchOS() || Triple.isMacOSX());
  if (Triple.isiOS()) {
    bool isiOSSimulator = tripleIsiOSSimulator(Triple);
    if (Triple.isTvOS()) {
      if (isiOSSimulator)
        Arguments.push_back("-tvos_simulator_version_min");
      else
        Arguments.push_back("-tvos_version_min");
    } else {
      if (isiOSSimulator)
        Arguments.push_back("-ios_simulator_version_min");
      else
        Arguments.push_back("-iphoneos_version_min");
    }
    unsigned major, minor, micro;
    Triple.getiOSVersion(major, minor, micro);
    addVersionString(context.Args, Arguments, major, minor, micro);
  } else if (Triple.isWatchOS()) {
    if (tripleIsWatchSimulator(Triple))
      Arguments.push_back("-watchos_simulator_version_min");
    else
      Arguments.push_back("-watchos_version_min");
    unsigned major, minor, micro;
    Triple.getOSVersion(major, minor, micro);
    addVersionString(context.Args, Arguments, major, minor, micro);
  } else {
    Arguments.push_back("-macosx_version_min");
    unsigned major, minor, micro;
    Triple.getMacOSXVersion(major, minor, micro);
    addVersionString(context.Args, Arguments, major, minor, micro);
  }

  Arguments.push_back("-no_objc_category_merging");

  // This should be the last option, for convenience in checking output.
  Arguments.push_back("-o");
  Arguments.push_back(context.Output.getPrimaryOutputFilename().c_str());

  return II;
}
Пример #2
0
ToolChain::InvocationInfo
toolchains::GenericUnix::constructInvocation(const LinkJobAction &job,
                                             const JobContext &context) const {
  const Driver &D = getDriver();

  assert(context.Output.getPrimaryOutputType() == types::TY_Image &&
         "Invalid linker output type.");

  ArgStringList Arguments;

  switch (job.getKind()) {
  case LinkKind::None:
    llvm_unreachable("invalid link kind");
  case LinkKind::Executable:
    // Default case, nothing extra needed
    break;
  case LinkKind::DynamicLibrary:
    Arguments.push_back("-shared");
    break;
  }

  addPrimaryInputsOfType(Arguments, context.Inputs, types::TY_Object);
  addInputsOfType(Arguments, context.InputActions, types::TY_Object);

  context.Args.AddAllArgs(Arguments, options::OPT_Xlinker);
  context.Args.AddAllArgs(Arguments, options::OPT_linker_option_Group);
  context.Args.AddAllArgs(Arguments, options::OPT_F);

  if (!context.OI.SDKPath.empty()) {
    Arguments.push_back("--sysroot");
    Arguments.push_back(context.Args.MakeArgString(context.OI.SDKPath));
  }

  // Add the runtime library link path, which is platform-specific and found
  // relative to the compiler.
  // FIXME: Duplicated from CompilerInvocation, but in theory the runtime
  // library link path and the standard library module import path don't
  // need to be the same.
  llvm::SmallString<128> RuntimeLibPath;

  if (const Arg *A = context.Args.getLastArg(options::OPT_resource_dir)) {
    RuntimeLibPath = A->getValue();
  } else {
    RuntimeLibPath = D.getSwiftProgramPath();
    llvm::sys::path::remove_filename(RuntimeLibPath); // remove /swift
    llvm::sys::path::remove_filename(RuntimeLibPath); // remove /bin
    llvm::sys::path::append(RuntimeLibPath, "lib", "swift");
  }
  llvm::sys::path::append(RuntimeLibPath,
                          getPlatformNameForTriple(getTriple()));
  Arguments.push_back("-L");
  Arguments.push_back(context.Args.MakeArgString(RuntimeLibPath));

  if (context.Args.hasArg(options::OPT_profile_generate)) {
    SmallString<128> LibProfile(RuntimeLibPath);
    llvm::sys::path::remove_filename(LibProfile); // remove platform name
    llvm::sys::path::append(LibProfile, "clang", CLANG_VERSION_STRING);

    llvm::sys::path::append(LibProfile, "lib", getTriple().getOSName(),
                            Twine("libclang_rt.profile-") +
                              getTriple().getArchName() +
                              ".a");
    Arguments.push_back(context.Args.MakeArgString(LibProfile));
  }

  if (getTriple().isAndroid()) {
    // FIXME: Android: hard-coded paths to arm; needs to fix for arm64, x86
    Arguments.push_back("-target");
    Arguments.push_back("armv7-none-linux-androideabi");
    //Arguments.push_back(context.Args.MakeArgString(getTriple().str()));

    const char* ndkhome = getenv("ANDROID_NDK_HOME");
    assert(ndkhome && "ANDROID_NDK_HOME needs to be set to NDK "
      "install directory for linking");

    auto libgccpath = Twine(ndkhome) + "/toolchains/"
      "arm-linux-androideabi-4.8/prebuilt/linux-x86_64/"
      "lib/gcc/arm-linux-androideabi/4.8";
    Arguments.push_back("-L");
    Arguments.push_back(context.Args.MakeArgString(libgccpath));

    auto libcxxpath = Twine(ndkhome) + "/sources/"
      "cxx-stl/llvm-libc++/libs/armeabi-v7a";
    Arguments.push_back("-L");
    Arguments.push_back(context.Args.MakeArgString(libcxxpath));

    Arguments.push_back("-lgcc");
    Arguments.push_back("-lc");
  } else {
    // rpaths are not supported on Android.

    // FIXME: We probably shouldn't be adding an rpath here unless we know ahead
    // of time the standard library won't be copied.
    Arguments.push_back("-Xlinker");
    Arguments.push_back("-rpath");
    Arguments.push_back("-Xlinker");
    Arguments.push_back(context.Args.MakeArgString(RuntimeLibPath));
  }

  // Always add the stdlib
  Arguments.push_back("-lswiftCore");

  // Add any autolinking scripts to the arguments
  for (const Job *Cmd : context.Inputs) {
    auto &OutputInfo = Cmd->getOutput();
    if (OutputInfo.getPrimaryOutputType() == types::TY_AutolinkFile)
      Arguments.push_back(context.Args.MakeArgString(
        Twine("@") + OutputInfo.getPrimaryOutputFilename()));
  }

  // Add the linker script that coalesces protocol conformance sections.
  Arguments.push_back("-Xlinker");
  Arguments.push_back("-T");
    
  // FIXME: This should also query the abi type (i.e. gnueabihf)
  Arguments.push_back(context.Args.MakeArgString(
    Twine(RuntimeLibPath) + "/" + getTriple().getArchName() + "/swift.ld"));

  // This should be the last option, for convenience in checking output.
  Arguments.push_back("-o");
  Arguments.push_back(context.Output.getPrimaryOutputFilename().c_str());

  return {"clang++", Arguments};
}
Пример #3
0
ToolChain::InvocationInfo
toolchains::GenericUnix::constructInvocation(const LinkJobAction &job,
                                             const JobContext &context) const {
  assert(context.Output.getPrimaryOutputType() == types::TY_Image &&
         "Invalid linker output type.");

  ArgStringList Arguments;

  switch (job.getKind()) {
  case LinkKind::None:
    llvm_unreachable("invalid link kind");
  case LinkKind::Executable:
    // Default case, nothing extra needed
    break;
  case LinkKind::DynamicLibrary:
    Arguments.push_back("-shared");
    break;
  }

  // Select the linker to use
  std::string Linker;
  if (const Arg *A = context.Args.getLastArg(options::OPT_use_ld)) {
    Linker = A->getValue();
  } else {
    Linker = getDefaultLinker();
  }
  if (!Linker.empty()) {
    Arguments.push_back(context.Args.MakeArgString("-fuse-ld=" + Linker));
  }

  std::string Target = getTargetForLinker();
  if (!Target.empty()) {
    Arguments.push_back("-target");
    Arguments.push_back(context.Args.MakeArgString(Target));
  }

  // Add the runtime library link path, which is platform-specific and found
  // relative to the compiler.
  llvm::SmallString<128> RuntimeLibPath;
  getRuntimeLibraryPath(RuntimeLibPath, context.Args, *this);
  if (shouldProvideRPathToLinker()) {
    // FIXME: We probably shouldn't be adding an rpath here unless we know
    //        ahead of time the standard library won't be copied.
    Arguments.push_back("-Xlinker");
    Arguments.push_back("-rpath");
    Arguments.push_back("-Xlinker");
    Arguments.push_back(context.Args.MakeArgString(RuntimeLibPath));
  }

  auto PreInputObjectPath = getPreInputObjectPath(RuntimeLibPath);
  if (!PreInputObjectPath.empty()) {
    Arguments.push_back(context.Args.MakeArgString(PreInputObjectPath));
  }
  addPrimaryInputsOfType(Arguments, context.Inputs, types::TY_Object);
  addInputsOfType(Arguments, context.InputActions, types::TY_Object);

  context.Args.AddAllArgs(Arguments, options::OPT_Xlinker);
  context.Args.AddAllArgs(Arguments, options::OPT_linker_option_Group);
  context.Args.AddAllArgs(Arguments, options::OPT_F);

  if (!context.OI.SDKPath.empty()) {
    Arguments.push_back("--sysroot");
    Arguments.push_back(context.Args.MakeArgString(context.OI.SDKPath));
  }

  Arguments.push_back("-L");
  Arguments.push_back(context.Args.MakeArgString(RuntimeLibPath));

  if (context.Args.hasArg(options::OPT_profile_generate)) {
    SmallString<128> LibProfile(RuntimeLibPath);
    llvm::sys::path::remove_filename(LibProfile); // remove platform name
    llvm::sys::path::append(LibProfile, "clang", "lib");

    llvm::sys::path::append(LibProfile, getTriple().getOSName(),
                            Twine("libclang_rt.profile-") +
                              getTriple().getArchName() +
                              ".a");
    Arguments.push_back(context.Args.MakeArgString(LibProfile));
  }

  // Always add the stdlib
  Arguments.push_back("-lswiftCore");

  // Add any autolinking scripts to the arguments
  for (const Job *Cmd : context.Inputs) {
    auto &OutputInfo = Cmd->getOutput();
    if (OutputInfo.getPrimaryOutputType() == types::TY_AutolinkFile)
      Arguments.push_back(context.Args.MakeArgString(
        Twine("@") + OutputInfo.getPrimaryOutputFilename()));
  }

  // Just before the output option, allow GenericUnix toolchains to add
  // additional inputs.
  auto PostInputObjectPath = getPostInputObjectPath(RuntimeLibPath);
  if (!PostInputObjectPath.empty()) {
    Arguments.push_back(context.Args.MakeArgString(PostInputObjectPath));
  }

  // This should be the last option, for convenience in checking output.
  Arguments.push_back("-o");
  Arguments.push_back(context.Output.getPrimaryOutputFilename().c_str());

  return {"clang++", Arguments};
}
Пример #4
0
ToolChain::InvocationInfo
toolchains::Windows::constructInvocation(const LinkJobAction &job,
                                         const JobContext &context) const {
  assert(context.Output.getPrimaryOutputType() == file_types::TY_Image &&
         "Invalid linker output type.");

  ArgStringList Arguments;

  switch (job.getKind()) {
  case LinkKind::None:
    llvm_unreachable("invalid link kind");
  case LinkKind::Executable:
    // Default case, nothing extra needed.
    break;
  case LinkKind::DynamicLibrary:
    Arguments.push_back("-shared");
    break;
  }

  // Select the linker to use.
  std::string Linker;
  if (const Arg *A = context.Args.getLastArg(options::OPT_use_ld)) {
    Linker = A->getValue();
  }
  if (!Linker.empty())
    Arguments.push_back(context.Args.MakeArgString("-fuse-ld=" + Linker));

  if (context.OI.DebugInfoFormat == IRGenDebugInfoFormat::CodeView)
      Arguments.push_back("-Wl,/DEBUG");

  // Configure the toolchain.
  // By default, use the system clang++ to link.
  const char *Clang = nullptr;
  if (const Arg *A = context.Args.getLastArg(options::OPT_tools_directory)) {
    StringRef toolchainPath(A->getValue());

    // If there is a clang in the toolchain folder, use that instead.
    if (auto toolchainClang =
            llvm::sys::findProgramByName("clang++", {toolchainPath}))
      Clang = context.Args.MakeArgString(toolchainClang.get());
  }
  if (Clang == nullptr) {
    if (auto pathClang = llvm::sys::findProgramByName("clang++", None))
      Clang = context.Args.MakeArgString(pathClang.get());
  }
  assert(Clang &&
         "clang++ was not found in the toolchain directory or system path.");

  std::string Target = getTriple().str();
  if (!Target.empty()) {
    Arguments.push_back("-target");
    Arguments.push_back(context.Args.MakeArgString(Target));
  }

  SmallString<128> SharedRuntimeLibPath;
  getRuntimeLibraryPath(SharedRuntimeLibPath, context.Args,
                        /*Shared=*/true);

  // Link the standard library.
  Arguments.push_back("-L");
  if (context.Args.hasFlag(options::OPT_static_stdlib,
                           options::OPT_no_static_stdlib, false)) {
    SmallString<128> StaticRuntimeLibPath;
    getRuntimeLibraryPath(StaticRuntimeLibPath, context.Args,
                          /*Shared=*/false);

    // Since Windows has separate libraries per architecture, link against the
    // architecture specific version of the static library.
    Arguments.push_back(context.Args.MakeArgString(StaticRuntimeLibPath + "/" +
                                                   getTriple().getArchName()));
  } else {
    Arguments.push_back(context.Args.MakeArgString(SharedRuntimeLibPath + "/" +
                                                   getTriple().getArchName()));
  }

  SmallString<128> swiftrtPath = SharedRuntimeLibPath;
  llvm::sys::path::append(swiftrtPath,
                          swift::getMajorArchitectureName(getTriple()));
  llvm::sys::path::append(swiftrtPath, "swiftrt.o");
  Arguments.push_back(context.Args.MakeArgString(swiftrtPath));

  addPrimaryInputsOfType(Arguments, context.Inputs, context.Args,
                         file_types::TY_Object);
  addInputsOfType(Arguments, context.InputActions, file_types::TY_Object);

  for (const Arg *arg :
       context.Args.filtered(options::OPT_F, options::OPT_Fsystem)) {
    if (arg->getOption().matches(options::OPT_Fsystem))
      Arguments.push_back("-iframework");
    else
      Arguments.push_back(context.Args.MakeArgString(arg->getSpelling()));
    Arguments.push_back(arg->getValue());
  }

  if (!context.OI.SDKPath.empty()) {
    Arguments.push_back("-I");
    Arguments.push_back(context.Args.MakeArgString(context.OI.SDKPath));
  }

  if (job.getKind() == LinkKind::Executable) {
    if (context.OI.SelectedSanitizers & SanitizerKind::Address)
      addLinkRuntimeLib(context.Args, Arguments,
                        sanitizerRuntimeLibName("asan"));
  }

  if (context.Args.hasArg(options::OPT_profile_generate)) {
    SmallString<128> LibProfile(SharedRuntimeLibPath);
    llvm::sys::path::remove_filename(LibProfile); // remove platform name
    llvm::sys::path::append(LibProfile, "clang", "lib");

    llvm::sys::path::append(LibProfile, getTriple().getOSName(),
                            Twine("clang_rt.profile-") +
                                getTriple().getArchName() + ".lib");
    Arguments.push_back(context.Args.MakeArgString(LibProfile));
    Arguments.push_back(context.Args.MakeArgString(
        Twine("-u", llvm::getInstrProfRuntimeHookVarName())));
  }

  context.Args.AddAllArgs(Arguments, options::OPT_Xlinker);
  context.Args.AddAllArgs(Arguments, options::OPT_linker_option_Group);

  // Run clang++ in verbose mode if "-v" is set
  if (context.Args.hasArg(options::OPT_v)) {
    Arguments.push_back("-v");
  }

  // This should be the last option, for convenience in checking output.
  Arguments.push_back("-o");
  Arguments.push_back(
      context.Args.MakeArgString(context.Output.getPrimaryOutputFilename()));

  InvocationInfo II{Clang, Arguments};
  II.allowsResponseFiles = true;

  return II;
}
Пример #5
0
ToolChain::InvocationInfo
toolchains::Windows::constructInvocation(const LinkJobAction &job,
                                         const JobContext &context) const {
  const Driver &D = getDriver();

  assert(context.Output.getPrimaryOutputType() == types::TY_Image &&
         "Invalid linker output type.");

  ArgStringList Arguments;

  switch (job.getKind()) {
  case LinkKind::None:
    llvm_unreachable("invalid link kind");
  case LinkKind::Executable:
    // Default case, nothing extra needed
    break;
  case LinkKind::DynamicLibrary:
    Arguments.push_back("-shared");
    break;
  }

  addPrimaryInputsOfType(Arguments, context.Inputs, types::TY_Object);
  addInputsOfType(Arguments, context.InputActions, types::TY_Object);

  context.Args.AddAllArgs(Arguments, options::OPT_Xlinker);
  context.Args.AddAllArgs(Arguments, options::OPT_linker_option_Group);
  context.Args.AddAllArgs(Arguments, options::OPT_F);

  if (!context.OI.SDKPath.empty()) {
    Arguments.push_back("--sysroot");
    Arguments.push_back(context.Args.MakeArgString(context.OI.SDKPath));
  }

  // Add the runtime library link path, which is platform-specific and found
  // relative to the compiler.
  // FIXME: Duplicated from CompilerInvocation, but in theory the runtime
  // library link path and the standard library module import path don't
  // need to be the same.
  llvm::SmallString<128> RuntimeLibPath;

  if (const Arg *A = context.Args.getLastArg(options::OPT_resource_dir)) {
    RuntimeLibPath = A->getValue();
  } else {
    RuntimeLibPath = D.getSwiftProgramPath();
    llvm::sys::path::remove_filename(RuntimeLibPath); // remove /swift
    llvm::sys::path::remove_filename(RuntimeLibPath); // remove /bin
    llvm::sys::path::append(RuntimeLibPath, "lib", "swift");
  }
  llvm::sys::path::append(RuntimeLibPath,
                          getPlatformNameForTriple(getTriple()));
  Arguments.push_back("-L");
  Arguments.push_back(context.Args.MakeArgString(RuntimeLibPath));

  if (context.Args.hasArg(options::OPT_profile_generate)) {
    SmallString<128> LibProfile(RuntimeLibPath);
    llvm::sys::path::remove_filename(LibProfile); // remove platform name
    llvm::sys::path::append(LibProfile, "clang", CLANG_VERSION_STRING);

    llvm::sys::path::append(LibProfile, "lib", getTriple().getOSName(),
                            Twine("libclang_rt.profile-") +
                                getTriple().getArchName() + ".a");
    Arguments.push_back(context.Args.MakeArgString(LibProfile));
  }

  // FIXME: We probably shouldn't be adding an rpath here unless we know ahead
  // of time the standard library won't be copied.
  Arguments.push_back("-Xlinker");
  Arguments.push_back("-rpath");
  Arguments.push_back("-Xlinker");
  Arguments.push_back(context.Args.MakeArgString(RuntimeLibPath));

  // Always add the stdlib
  Arguments.push_back("-lswiftCore");

  // Add any autolinking scripts to the arguments
  for (const Job *Cmd : context.Inputs) {
    auto &OutputInfo = Cmd->getOutput();
    if (OutputInfo.getPrimaryOutputType() == types::TY_AutolinkFile)
      Arguments.push_back(context.Args.MakeArgString(
          Twine("@") + OutputInfo.getPrimaryOutputFilename()));
  }

  // This should be the last option, for convenience in checking output.
  Arguments.push_back("-o");
  Arguments.push_back(context.Output.getPrimaryOutputFilename().c_str());

  return {"clang++", Arguments};
}
Пример #6
0
ToolChain::InvocationInfo
toolchains::GenericUnix::constructInvocation(const LinkJobAction &job,
                                             const JobContext &context) const {
  const Driver &D = getDriver();

  assert(context.Output.getPrimaryOutputType() == types::TY_Image &&
         "Invalid linker output type.");

  ArgStringList Arguments;

  switch (job.getKind()) {
  case LinkKind::None:
    llvm_unreachable("invalid link kind");
  case LinkKind::Executable:
    // Default case, nothing extra needed
    break;
  case LinkKind::DynamicLibrary:
    Arguments.push_back("-shared");
    break;
  }

  // Select the linker to use
  StringRef Linker;

  if (const Arg *A = context.Args.getLastArg(options::OPT_use_ld)) {
    Linker = A->getValue();
  } else {
    switch(getTriple().getArch()) {
    default:
      break;
    case llvm::Triple::arm:
    case llvm::Triple::armeb:
    case llvm::Triple::thumb:
    case llvm::Triple::thumbeb:
    // BFD linker has issues wrt relocation of the protocol conformance
    // section on these targets, it also generates COPY relocations for
    // final executables, as such, unless specified, we default to gold
    // linker.
      Linker = "gold";
    }
  }

  if (!Linker.empty()) {
    Arguments.push_back(context.Args.MakeArgString("-fuse-ld=" + Linker));
  }

  // Add the runtime library link path, which is platform-specific and found
  // relative to the compiler.
  // FIXME: Duplicated from CompilerInvocation, but in theory the runtime
  // library link path and the standard library module import path don't
  // need to be the same.
  llvm::SmallString<128> RuntimeLibPath;

  if (const Arg *A = context.Args.getLastArg(options::OPT_resource_dir)) {
    RuntimeLibPath = A->getValue();
  } else {
    RuntimeLibPath = D.getSwiftProgramPath();
    llvm::sys::path::remove_filename(RuntimeLibPath); // remove /swift
    llvm::sys::path::remove_filename(RuntimeLibPath); // remove /bin
    llvm::sys::path::append(RuntimeLibPath, "lib", "swift");
  }
  llvm::sys::path::append(RuntimeLibPath,
                          getPlatformNameForTriple(getTriple()));

 // On Linux and FreeBSD (really, ELF binaries) we need to add objects
 // to provide markers and size for the metadata sections.
  Arguments.push_back(context.Args.MakeArgString(
    Twine(RuntimeLibPath) + "/" + getSectionMagicArch(getTriple()) + "/swift_begin.o"));
  addPrimaryInputsOfType(Arguments, context.Inputs, types::TY_Object);
  addInputsOfType(Arguments, context.InputActions, types::TY_Object);

  context.Args.AddAllArgs(Arguments, options::OPT_Xlinker);
  context.Args.AddAllArgs(Arguments, options::OPT_linker_option_Group);
  context.Args.AddAllArgs(Arguments, options::OPT_F);

  if (!context.OI.SDKPath.empty()) {
    Arguments.push_back("--sysroot");
    Arguments.push_back(context.Args.MakeArgString(context.OI.SDKPath));
  }

  Arguments.push_back("-L");
  Arguments.push_back(context.Args.MakeArgString(RuntimeLibPath));

  // Explicitly pass the target to the linker
  Arguments.push_back(context.Args.MakeArgString("--target=" + getTriple().str()));

  if (context.Args.hasArg(options::OPT_profile_generate)) {
    SmallString<128> LibProfile(RuntimeLibPath);
    llvm::sys::path::remove_filename(LibProfile); // remove platform name
    llvm::sys::path::append(LibProfile, "clang", "lib");

    llvm::sys::path::append(LibProfile, getTriple().getOSName(),
                            Twine("libclang_rt.profile-") +
                              getTriple().getArchName() +
                              ".a");
    Arguments.push_back(context.Args.MakeArgString(LibProfile));
  }

  if (getTriple().isAndroid()) {
    // FIXME: These should be set in CMake.
    Arguments.push_back("-target");
    Arguments.push_back("armv7-none-linux-androideabi");

    const char* ndkhome = getenv("ANDROID_NDK_HOME");
    assert(ndkhome && "ANDROID_NDK_HOME needs to be set to NDK "
      "install directory for linking");

    auto libgccpath = Twine(ndkhome) + "/toolchains/"
      "arm-linux-androideabi-4.8/prebuilt/linux-x86_64/"
      "lib/gcc/arm-linux-androideabi/4.8";
    Arguments.push_back("-L");
    Arguments.push_back(context.Args.MakeArgString(libgccpath));

    auto libcxxpath = Twine(ndkhome) + "/sources/"
      "cxx-stl/llvm-libc++/libs/armeabi-v7a";
    Arguments.push_back("-L");
    Arguments.push_back(context.Args.MakeArgString(libcxxpath));
  } else {
    // FIXME: We probably shouldn't be adding an rpath here unless we know ahead
    // of time the standard library won't be copied.
    Arguments.push_back("-Xlinker");
    Arguments.push_back("-rpath");
    Arguments.push_back("-Xlinker");
    Arguments.push_back(context.Args.MakeArgString(RuntimeLibPath));
  }

  // Always add the stdlib
  Arguments.push_back("-lswiftCore");

  // Add any autolinking scripts to the arguments
  for (const Job *Cmd : context.Inputs) {
    auto &OutputInfo = Cmd->getOutput();
    if (OutputInfo.getPrimaryOutputType() == types::TY_AutolinkFile)
      Arguments.push_back(context.Args.MakeArgString(
        Twine("@") + OutputInfo.getPrimaryOutputFilename()));
  }

  // It is important that swift_end.o be the last object on the link line
  // therefore, it is included just before the output filename.
  Arguments.push_back(context.Args.MakeArgString(
    Twine(RuntimeLibPath) + "/" + getSectionMagicArch(getTriple()) + "/swift_end.o"));

  // This should be the last option, for convenience in checking output.
  Arguments.push_back("-o");
  Arguments.push_back(context.Output.getPrimaryOutputFilename().c_str());

  return {"clang++", Arguments};
}
Пример #7
0
ToolChain::InvocationInfo
toolchains::GenericUnix::constructInvocation(const LinkJobAction &job,
                                             const JobContext &context) const {
  assert(context.Output.getPrimaryOutputType() == file_types::TY_Image &&
         "Invalid linker output type.");

  ArgStringList Arguments;

  switch (job.getKind()) {
  case LinkKind::None:
    llvm_unreachable("invalid link kind");
  case LinkKind::Executable:
    // Default case, nothing extra needed.
    break;
  case LinkKind::DynamicLibrary:
    Arguments.push_back("-shared");
    break;
  }

  // Select the linker to use.
  std::string Linker;
  if (const Arg *A = context.Args.getLastArg(options::OPT_use_ld)) {
    Linker = A->getValue();
  } else {
    Linker = getDefaultLinker();
  }
  if (!Linker.empty()) {
#if defined(__HAIKU__)
    // For now, passing -fuse-ld on Haiku doesn't work as swiftc doesn't
    // recognise it. Passing -use-ld= as the argument works fine.
    Arguments.push_back(context.Args.MakeArgString("-use-ld=" + Linker));
#else
    Arguments.push_back(context.Args.MakeArgString("-fuse-ld=" + Linker));
#endif
  }

  // Configure the toolchain.
  // By default, use the system clang++ to link.
  const char *Clang = "clang++";
  if (const Arg *A = context.Args.getLastArg(options::OPT_tools_directory)) {
    StringRef toolchainPath(A->getValue());

    // If there is a clang in the toolchain folder, use that instead.
    if (auto toolchainClang =
            llvm::sys::findProgramByName("clang++", {toolchainPath})) {
      Clang = context.Args.MakeArgString(toolchainClang.get());
    }

    // Look for binutils in the toolchain folder.
    Arguments.push_back("-B");
    Arguments.push_back(context.Args.MakeArgString(A->getValue()));
  }

  if (getTriple().getOS() == llvm::Triple::Linux &&
      job.getKind() == LinkKind::Executable) {
    Arguments.push_back("-pie");
  }

  std::string Target = getTargetForLinker();
  if (!Target.empty()) {
    Arguments.push_back("-target");
    Arguments.push_back(context.Args.MakeArgString(Target));
  }

  bool staticExecutable = false;
  bool staticStdlib = false;

  if (context.Args.hasFlag(options::OPT_static_executable,
                           options::OPT_no_static_executable, false)) {
    staticExecutable = true;
  } else if (context.Args.hasFlag(options::OPT_static_stdlib,
                                  options::OPT_no_static_stdlib, false)) {
    staticStdlib = true;
  }

  SmallString<128> SharedRuntimeLibPath;
  getRuntimeLibraryPath(SharedRuntimeLibPath, context.Args, /*Shared=*/true);

  SmallString<128> StaticRuntimeLibPath;
  getRuntimeLibraryPath(StaticRuntimeLibPath, context.Args, /*Shared=*/false);

  // Add the runtime library link path, which is platform-specific and found
  // relative to the compiler.
  if (!(staticExecutable || staticStdlib) && shouldProvideRPathToLinker()) {
    // FIXME: We probably shouldn't be adding an rpath here unless we know
    //        ahead of time the standard library won't be copied.
    Arguments.push_back("-Xlinker");
    Arguments.push_back("-rpath");
    Arguments.push_back("-Xlinker");
    Arguments.push_back(context.Args.MakeArgString(SharedRuntimeLibPath));
  }

  SmallString<128> swiftrtPath = SharedRuntimeLibPath;
  llvm::sys::path::append(swiftrtPath,
                          swift::getMajorArchitectureName(getTriple()));
  llvm::sys::path::append(swiftrtPath, "swiftrt.o");
  Arguments.push_back(context.Args.MakeArgString(swiftrtPath));

  addPrimaryInputsOfType(Arguments, context.Inputs, context.Args,
                         file_types::TY_Object);
  addInputsOfType(Arguments, context.InputActions, file_types::TY_Object);

  for (const Arg *arg :
       context.Args.filtered(options::OPT_F, options::OPT_Fsystem)) {
    if (arg->getOption().matches(options::OPT_Fsystem))
      Arguments.push_back("-iframework");
    else
      Arguments.push_back(context.Args.MakeArgString(arg->getSpelling()));
    Arguments.push_back(arg->getValue());
  }

  if (!context.OI.SDKPath.empty()) {
    Arguments.push_back("--sysroot");
    Arguments.push_back(context.Args.MakeArgString(context.OI.SDKPath));
  }

  // Add any autolinking scripts to the arguments
  for (const Job *Cmd : context.Inputs) {
    auto &OutputInfo = Cmd->getOutput();
    if (OutputInfo.getPrimaryOutputType() == file_types::TY_AutolinkFile)
      Arguments.push_back(context.Args.MakeArgString(
          Twine("@") + OutputInfo.getPrimaryOutputFilename()));
  }

  // Link the standard library.
  Arguments.push_back("-L");

  if (staticExecutable) {
    Arguments.push_back(context.Args.MakeArgString(StaticRuntimeLibPath));

    SmallString<128> linkFilePath = StaticRuntimeLibPath;
    llvm::sys::path::append(linkFilePath, "static-executable-args.lnk");
    auto linkFile = linkFilePath.str();

    if (llvm::sys::fs::is_regular_file(linkFile)) {
      Arguments.push_back(context.Args.MakeArgString(Twine("@") + linkFile));
    } else {
      llvm::report_fatal_error(
          "-static-executable not supported on this platform");
    }
  } else if (staticStdlib) {
    Arguments.push_back(context.Args.MakeArgString(StaticRuntimeLibPath));

    SmallString<128> linkFilePath = StaticRuntimeLibPath;
    llvm::sys::path::append(linkFilePath, "static-stdlib-args.lnk");
    auto linkFile = linkFilePath.str();
    if (llvm::sys::fs::is_regular_file(linkFile)) {
      Arguments.push_back(context.Args.MakeArgString(Twine("@") + linkFile));
    } else {
      llvm::report_fatal_error(linkFile + " not found");
    }
  } else {
    Arguments.push_back(context.Args.MakeArgString(SharedRuntimeLibPath));
    Arguments.push_back("-lswiftCore");
  }

  // Explicitly pass the target to the linker
  Arguments.push_back(
      context.Args.MakeArgString("--target=" + getTriple().str()));

  if (getTriple().getOS() == llvm::Triple::Linux) {
    // Make sure we only add SanitizerLibs for executables
    if (job.getKind() == LinkKind::Executable) {
      if (context.OI.SelectedSanitizers & SanitizerKind::Address)
        addLinkSanitizerLibArgsForLinux(context.Args, Arguments, "asan", *this);

      if (context.OI.SelectedSanitizers & SanitizerKind::Thread)
        addLinkSanitizerLibArgsForLinux(context.Args, Arguments, "tsan", *this);

      if (context.OI.SelectedSanitizers & SanitizerKind::Fuzzer)
        addLinkRuntimeLib(context.Args, Arguments,
                          sanitizerRuntimeLibName("fuzzer"));
    }
  }

  if (context.Args.hasArg(options::OPT_profile_generate)) {
    SmallString<128> LibProfile(SharedRuntimeLibPath);
    llvm::sys::path::remove_filename(LibProfile); // remove platform name
    llvm::sys::path::append(LibProfile, "clang", "lib");

    llvm::sys::path::append(LibProfile, getTriple().getOSName(),
                            Twine("libclang_rt.profile-") +
                                getTriple().getArchName() + ".a");
    Arguments.push_back(context.Args.MakeArgString(LibProfile));
    Arguments.push_back(context.Args.MakeArgString(
        Twine("-u", llvm::getInstrProfRuntimeHookVarName())));
  }

  context.Args.AddAllArgs(Arguments, options::OPT_Xlinker);
  context.Args.AddAllArgs(Arguments, options::OPT_linker_option_Group);

  // This should be the last option, for convenience in checking output.
  Arguments.push_back("-o");
  Arguments.push_back(
      context.Args.MakeArgString(context.Output.getPrimaryOutputFilename()));

  InvocationInfo II{Clang, Arguments};
  II.allowsResponseFiles = true;

  return II;
}
Пример #8
0
ToolChain::InvocationInfo
toolchains::Darwin::constructInvocation(const LinkJobAction &job,
                                        const JobContext &context) const {
  assert(context.Output.getPrimaryOutputType() == file_types::TY_Image &&
         "Invalid linker output type.");

  if (context.Args.hasFlag(options::OPT_static_executable,
                           options::OPT_no_static_executable, false)) {
    llvm::report_fatal_error("-static-executable is not supported on Darwin");
  }

  const Driver &D = getDriver();
  const llvm::Triple &Triple = getTriple();

  // Configure the toolchain.
  // By default, use the system `ld` to link.
  const char *LD = "ld";
  if (const Arg *A = context.Args.getLastArg(options::OPT_tools_directory)) {
    StringRef toolchainPath(A->getValue());

    // If there is a 'ld' in the toolchain folder, use that instead.
    if (auto toolchainLD =
            llvm::sys::findProgramByName("ld", {toolchainPath})) {
      LD = context.Args.MakeArgString(toolchainLD.get());
    }
  }

  InvocationInfo II = {LD};
  ArgStringList &Arguments = II.Arguments;

  if (context.shouldUseInputFileList()) {
    Arguments.push_back("-filelist");
    Arguments.push_back(context.getTemporaryFilePath("inputs", "LinkFileList"));
    II.FilelistInfos.push_back({Arguments.back(), file_types::TY_Object,
                                FilelistInfo::WhichFiles::Input});
  } else {
    addPrimaryInputsOfType(Arguments, context.Inputs, context.Args,
                           file_types::TY_Object);
  }

  addInputsOfType(Arguments, context.InputActions, file_types::TY_Object);

  if (context.OI.CompilerMode == OutputInfo::Mode::SingleCompile)
    addInputsOfType(Arguments, context.Inputs, context.Args,
                    file_types::TY_SwiftModuleFile, "-add_ast_path");
  else
    addPrimaryInputsOfType(Arguments, context.Inputs, context.Args,
                           file_types::TY_SwiftModuleFile, "-add_ast_path");

  // Add all .swiftmodule file inputs as arguments, preceded by the
  // "-add_ast_path" linker option.
  addInputsOfType(Arguments, context.InputActions,
                  file_types::TY_SwiftModuleFile, "-add_ast_path");

  switch (job.getKind()) {
  case LinkKind::None:
    llvm_unreachable("invalid link kind");
  case LinkKind::Executable:
    // The default for ld; no extra flags necessary.
    break;
  case LinkKind::DynamicLibrary:
    Arguments.push_back("-dylib");
    break;
  }

  assert(Triple.isOSDarwin());

  // FIXME: If we used Clang as a linker instead of going straight to ld,
  // we wouldn't have to replicate a bunch of Clang's logic here.

  // Always link the regular compiler_rt if it's present.
  //
  // Note: Normally we'd just add this unconditionally, but it's valid to build
  // Swift and use it as a linker without building compiler_rt.
  SmallString<128> CompilerRTPath;
  getClangLibraryPath(context.Args, CompilerRTPath);
  llvm::sys::path::append(
      CompilerRTPath,
      Twine("libclang_rt.") +
        getDarwinLibraryNameSuffixForTriple(Triple, /*simulator*/false) +
        ".a");
  if (llvm::sys::fs::exists(CompilerRTPath))
    Arguments.push_back(context.Args.MakeArgString(CompilerRTPath));

  if (context.Args.hasFlag(options::OPT_link_objc_runtime,
                           options::OPT_no_link_objc_runtime,
                           /*Default=*/wantsObjCRuntime(Triple))) {
    llvm::SmallString<128> ARCLiteLib(D.getSwiftProgramPath());
    llvm::sys::path::remove_filename(ARCLiteLib); // 'swift'
    llvm::sys::path::remove_filename(ARCLiteLib); // 'bin'
    llvm::sys::path::append(ARCLiteLib, "lib", "arc");

    if (!llvm::sys::fs::is_directory(ARCLiteLib)) {
      // If we don't have a 'lib/arc/' directory, find the "arclite" library
      // relative to the Clang in the active Xcode.
      ARCLiteLib.clear();
      if (findXcodeClangPath(ARCLiteLib)) {
        llvm::sys::path::remove_filename(ARCLiteLib); // 'clang'
        llvm::sys::path::remove_filename(ARCLiteLib); // 'bin'
        llvm::sys::path::append(ARCLiteLib, "lib", "arc");
      }
    }

    if (!ARCLiteLib.empty()) {
      llvm::sys::path::append(ARCLiteLib, "libarclite_");
      ARCLiteLib += getPlatformNameForTriple(Triple);
      ARCLiteLib += ".a";

      Arguments.push_back("-force_load");
      Arguments.push_back(context.Args.MakeArgString(ARCLiteLib));

      // Arclite depends on CoreFoundation.
      Arguments.push_back("-framework");
      Arguments.push_back("CoreFoundation");
    } else {
      // FIXME: We should probably diagnose this, but this is not a place where
      // we can emit diagnostics. Silently ignore it for now.
    }
  }

  context.Args.AddAllArgValues(Arguments, options::OPT_Xlinker);
  context.Args.AddAllArgs(Arguments, options::OPT_linker_option_Group);
  for (const Arg *arg :
       context.Args.filtered(options::OPT_F, options::OPT_Fsystem)) {
    Arguments.push_back("-F");
    Arguments.push_back(arg->getValue());
  }

  if (context.Args.hasArg(options::OPT_enable_app_extension)) {
    // Keep this string fixed in case the option used by the
    // compiler itself changes.
    Arguments.push_back("-application_extension");
  }

  // Linking sanitizers will add rpaths, which might negatively interact when
  // other rpaths are involved, so we should make sure we add the rpaths after
  // all user-specified rpaths.
  if (context.OI.SelectedSanitizers & SanitizerKind::Address)
    addLinkSanitizerLibArgsForDarwin(context.Args, Arguments, "asan", *this);

  if (context.OI.SelectedSanitizers & SanitizerKind::Thread)
    addLinkSanitizerLibArgsForDarwin(context.Args, Arguments, "tsan", *this);

  // Only link in libFuzzer for executables.
  if (job.getKind() == LinkKind::Executable &&
      (context.OI.SelectedSanitizers & SanitizerKind::Fuzzer))
    addLinkSanitizerLibArgsForDarwin(context.Args, Arguments, "fuzzer", *this,
                                     /*shared=*/false);

  if (context.Args.hasArg(options::OPT_embed_bitcode,
                          options::OPT_embed_bitcode_marker)) {
    Arguments.push_back("-bitcode_bundle");
  }

  if (!context.OI.SDKPath.empty()) {
    Arguments.push_back("-syslibroot");
    Arguments.push_back(context.Args.MakeArgString(context.OI.SDKPath));
  }

  Arguments.push_back("-lobjc");
  Arguments.push_back("-lSystem");

  Arguments.push_back("-arch");
  Arguments.push_back(context.Args.MakeArgString(getTriple().getArchName()));

  // Add the runtime library link path, which is platform-specific and found
  // relative to the compiler.
  SmallString<128> RuntimeLibPath;
  getRuntimeLibraryPath(RuntimeLibPath, context.Args, /*Shared=*/true);

  // Link the standard library.
  Arguments.push_back("-L");
  if (context.Args.hasFlag(options::OPT_static_stdlib,
                           options::OPT_no_static_stdlib, false)) {
    SmallString<128> StaticRuntimeLibPath;
    getRuntimeLibraryPath(StaticRuntimeLibPath, context.Args, /*Shared=*/false);
    Arguments.push_back(context.Args.MakeArgString(StaticRuntimeLibPath));
    Arguments.push_back("-lc++");
    Arguments.push_back("-framework");
    Arguments.push_back("Foundation");
    Arguments.push_back("-force_load_swift_libs");
  } else {
    Arguments.push_back(context.Args.MakeArgString(RuntimeLibPath));
    // FIXME: We probably shouldn't be adding an rpath here unless we know ahead
    // of time the standard library won't be copied. SR-1967
    Arguments.push_back("-rpath");
    Arguments.push_back(context.Args.MakeArgString(RuntimeLibPath));
  }

  if (context.Args.hasArg(options::OPT_profile_generate)) {
    SmallString<128> LibProfile;
    getClangLibraryPath(context.Args, LibProfile);

    StringRef RT;
    if (Triple.isiOS()) {
      if (Triple.isTvOS())
        RT = "tvos";
      else
        RT = "ios";
    } else if (Triple.isWatchOS()) {
      RT = "watchos";
    } else {
      assert(Triple.isMacOSX());
      RT = "osx";
    }

    StringRef Sim;
    if (tripleIsAnySimulator(Triple)) {
      Sim = "sim";
    }

    llvm::sys::path::append(LibProfile,
                            "libclang_rt.profile_" + RT + Sim + ".a");

    // FIXME: Continue accepting the old path for simulator libraries for now.
    if (!Sim.empty() && !llvm::sys::fs::exists(LibProfile)) {
      llvm::sys::path::remove_filename(LibProfile);
      llvm::sys::path::append(LibProfile, "libclang_rt.profile_" + RT + ".a");
    }

    Arguments.push_back(context.Args.MakeArgString(LibProfile));
  }

  // FIXME: Properly handle deployment targets.
  assert(Triple.isiOS() || Triple.isWatchOS() || Triple.isMacOSX());
  if (Triple.isiOS()) {
    bool isiOSSimulator = tripleIsiOSSimulator(Triple);
    if (Triple.isTvOS()) {
      if (isiOSSimulator)
        Arguments.push_back("-tvos_simulator_version_min");
      else
        Arguments.push_back("-tvos_version_min");
    } else {
      if (isiOSSimulator)
        Arguments.push_back("-ios_simulator_version_min");
      else
        Arguments.push_back("-iphoneos_version_min");
    }
    unsigned major, minor, micro;
    Triple.getiOSVersion(major, minor, micro);
    addVersionString(context.Args, Arguments, major, minor, micro);
  } else if (Triple.isWatchOS()) {
    if (tripleIsWatchSimulator(Triple))
      Arguments.push_back("-watchos_simulator_version_min");
    else
      Arguments.push_back("-watchos_version_min");
    unsigned major, minor, micro;
    Triple.getOSVersion(major, minor, micro);
    addVersionString(context.Args, Arguments, major, minor, micro);
  } else {
    Arguments.push_back("-macosx_version_min");
    unsigned major, minor, micro;
    Triple.getMacOSXVersion(major, minor, micro);
    addVersionString(context.Args, Arguments, major, minor, micro);
  }

  Arguments.push_back("-no_objc_category_merging");

  // This should be the last option, for convenience in checking output.
  Arguments.push_back("-o");
  Arguments.push_back(
      context.Args.MakeArgString(context.Output.getPrimaryOutputFilename()));

  return II;
}