lld/MachO/DriverUtils.cpp

   1 //===- DriverUtils.cpp ----------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "DriverUtils.h"
  10 #include "InputFiles.h"
  11
  12 #include "lld/Common/ErrorHandler.h"
  13 #include "lld/Common/Memory.h"
  14 #include "llvm/Support/Path.h"
  15 #include "llvm/TextAPI/MachO/TextAPIReader.h"
  16
  17 using namespace llvm;
  18 using namespace llvm::MachO;
  19 using namespace llvm::sys;
  20 using namespace lld;
  21 using namespace lld::macho;
  22
  23 Optional<std::string> macho::resolveDylibPath(StringRef path) {
  24   // TODO: if a tbd and dylib are both present, we should check to make sure
  25   // they are consistent.
  26   if (fs::exists(path))
  27     return std::string(path);
  28
  29   SmallString<261> location = path;
  30   path::replace_extension(location, ".tbd");
  31   if (fs::exists(location))
  32     return std::string(location);
  33
  34   return {};
  35 }
  36
  37 Optional<DylibFile *> macho::makeDylibFromTAPI(MemoryBufferRef mbref,
  38                                                DylibFile *umbrella) {
  39   Expected<std::unique_ptr<InterfaceFile>> result = TextAPIReader::get(mbref);
  40   if (!result) {
  41     error("could not load TAPI file at " + mbref.getBufferIdentifier() + ": " +
  42           toString(result.takeError()));
  43     return {};
  44   }
  45   return make<DylibFile>(**result, umbrella);
  46 }