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1 //===- Driver.h -------------------------------------------------*- C++ -*-===//
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2 //
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3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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4 // See https://llvm.org/LICENSE.txt for license information.
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5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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6 //
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7 //===----------------------------------------------------------------------===//
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8
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9 #ifndef LLD_ELF_DRIVER_H
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10 #define LLD_ELF_DRIVER_H
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11
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12 #include "LTO.h"
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13 #include "SymbolTable.h"
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14 #include "lld/Common/LLVM.h"
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15 #include "lld/Common/Reproduce.h"
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16 #include "llvm/ADT/Optional.h"
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17 #include "llvm/ADT/StringRef.h"
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18 #include "llvm/ADT/StringSet.h"
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19 #include "llvm/Option/ArgList.h"
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20 #include "llvm/Support/raw_ostream.h"
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21
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22 namespace lld {
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23 namespace elf {
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24
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25 extern class LinkerDriver *driver;
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26
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27 class LinkerDriver {
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28 public:
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29 void main(ArrayRef<const char *> args);
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30 void addFile(StringRef path, bool withLOption);
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31 void addLibrary(StringRef name);
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32
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33 private:
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34 void createFiles(llvm::opt::InputArgList &args);
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35 void inferMachineType();
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36 template <class ELFT> void link(llvm::opt::InputArgList &args);
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37 template <class ELFT> void compileBitcodeFiles();
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38
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39 // True if we are in --whole-archive and --no-whole-archive.
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40 bool inWholeArchive = false;
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41
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42 // True if we are in --start-lib and --end-lib.
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43 bool inLib = false;
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44
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45 // For LTO.
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46 std::unique_ptr<BitcodeCompiler> lto;
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47
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48 std::vector<InputFile *> files;
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49 };
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50
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51 // Parses command line options.
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52 class ELFOptTable : public llvm::opt::OptTable {
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53 public:
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54 ELFOptTable();
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55 llvm::opt::InputArgList parse(ArrayRef<const char *> argv);
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56 };
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57
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58 // Create enum with OPT_xxx values for each option in Options.td
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59 enum {
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60 OPT_INVALID = 0,
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61 #define OPTION(_1, _2, ID, _4, _5, _6, _7, _8, _9, _10, _11, _12) OPT_##ID,
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62 #include "Options.inc"
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63 #undef OPTION
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64 };
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65
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66 void printHelp();
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67 std::string createResponseFile(const llvm::opt::InputArgList &args);
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68
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69 llvm::Optional<std::string> findFromSearchPaths(StringRef path);
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70 llvm::Optional<std::string> searchScript(StringRef path);
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71 llvm::Optional<std::string> searchLibraryBaseName(StringRef path);
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72 llvm::Optional<std::string> searchLibrary(StringRef path);
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73
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74 } // namespace elf
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75 } // namespace lld
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76
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77 #endif
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