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