1 //===- Driver.h -------------------------------------------------*- C++ -*-===// 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 #ifndef LLD_ELF_DRIVER_H 10 #define LLD_ELF_DRIVER_H 11 12 #include "LTO.h" 13 #include "lld/Common/LLVM.h" 14 #include "llvm/ADT/Optional.h" 15 #include "llvm/ADT/StringRef.h" 16 #include "llvm/Option/ArgList.h" 17 18 namespace lld { 19 namespace elf { 20 class InputFile; 21 class Symbol; 22 23 extern std::unique_ptr<class LinkerDriver> driver; 24 25 class LinkerDriver { 26 public: 27 void linkerMain(ArrayRef<const char *> args); 28 void addFile(StringRef path, bool withLOption); 29 void addLibrary(StringRef name); 30 31 private: 32 void createFiles(llvm::opt::InputArgList &args); 33 void inferMachineType(); 34 void link(llvm::opt::InputArgList &args); 35 template <class ELFT> void compileBitcodeFiles(bool skipLinkedOutput); 36 37 // True if we are in --whole-archive and --no-whole-archive. 38 bool inWholeArchive = false; 39 40 // True if we are in --start-lib and --end-lib. 41 bool inLib = false; 42 43 // For LTO. 44 std::unique_ptr<BitcodeCompiler> lto; 45 46 std::vector<InputFile *> files; 47 48 public: 49 SmallVector<std::pair<StringRef, unsigned>, 0> archiveFiles; 50 }; 51 52 // Parses command line options. 53 class ELFOptTable : public llvm::opt::OptTable { 54 public: 55 ELFOptTable(); 56 llvm::opt::InputArgList parse(ArrayRef<const char *> argv); 57 }; 58 59 // Create enum with OPT_xxx values for each option in Options.td 60 enum { 61 OPT_INVALID = 0, 62 #define OPTION(_1, _2, ID, _4, _5, _6, _7, _8, _9, _10, _11, _12) OPT_##ID, 63 #include "Options.inc" 64 #undef OPTION 65 }; 66 67 void printHelp(); 68 std::string createResponseFile(const llvm::opt::InputArgList &args); 69 70 llvm::Optional<std::string> findFromSearchPaths(StringRef path); 71 llvm::Optional<std::string> searchScript(StringRef path); 72 llvm::Optional<std::string> searchLibraryBaseName(StringRef path); 73 llvm::Optional<std::string> searchLibrary(StringRef path); 74 75 } // namespace elf 76 } // namespace lld 77 78 #endif 79