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1 //===--- InitHeaderSearch.cpp - Initialize header search paths ------------===//
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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 // This file implements the InitHeaderSearch class.
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10 //
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11 //===----------------------------------------------------------------------===//
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12
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13 #include "clang/Basic/FileManager.h"
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14 #include "clang/Basic/LangOptions.h"
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15 #include "clang/Config/config.h" // C_INCLUDE_DIRS
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16 #include "clang/Frontend/FrontendDiagnostic.h"
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17 #include "clang/Frontend/Utils.h"
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18 #include "clang/Lex/HeaderMap.h"
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19 #include "clang/Lex/HeaderSearch.h"
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20 #include "clang/Lex/HeaderSearchOptions.h"
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21 #include "llvm/ADT/SmallPtrSet.h"
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22 #include "llvm/ADT/SmallString.h"
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23 #include "llvm/ADT/SmallVector.h"
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24 #include "llvm/ADT/StringExtras.h"
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25 #include "llvm/ADT/Triple.h"
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26 #include "llvm/ADT/Twine.h"
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27 #include "llvm/Support/ErrorHandling.h"
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28 #include "llvm/Support/Path.h"
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29 #include "llvm/Support/raw_ostream.h"
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30
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31 using namespace clang;
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32 using namespace clang::frontend;
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33
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34 namespace {
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35
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36 /// InitHeaderSearch - This class makes it easier to set the search paths of
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37 /// a HeaderSearch object. InitHeaderSearch stores several search path lists
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38 /// internally, which can be sent to a HeaderSearch object in one swoop.
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39 class InitHeaderSearch {
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40 std::vector<std::pair<IncludeDirGroup, DirectoryLookup> > IncludePath;
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41 typedef std::vector<std::pair<IncludeDirGroup,
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42 DirectoryLookup> >::const_iterator path_iterator;
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43 std::vector<std::pair<std::string, bool> > SystemHeaderPrefixes;
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44 HeaderSearch &Headers;
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45 bool Verbose;
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46 std::string IncludeSysroot;
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47 bool HasSysroot;
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48
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49 public:
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50 InitHeaderSearch(HeaderSearch &HS, bool verbose, StringRef sysroot)
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51 : Headers(HS), Verbose(verbose), IncludeSysroot(std::string(sysroot)),
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52 HasSysroot(!(sysroot.empty() || sysroot == "/")) {}
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53
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54 /// AddPath - Add the specified path to the specified group list, prefixing
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55 /// the sysroot if used.
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56 /// Returns true if the path exists, false if it was ignored.
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57 bool AddPath(const Twine &Path, IncludeDirGroup Group, bool isFramework);
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58
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59 /// AddUnmappedPath - Add the specified path to the specified group list,
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60 /// without performing any sysroot remapping.
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61 /// Returns true if the path exists, false if it was ignored.
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62 bool AddUnmappedPath(const Twine &Path, IncludeDirGroup Group,
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63 bool isFramework);
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64
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65 /// AddSystemHeaderPrefix - Add the specified prefix to the system header
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66 /// prefix list.
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67 void AddSystemHeaderPrefix(StringRef Prefix, bool IsSystemHeader) {
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68 SystemHeaderPrefixes.emplace_back(std::string(Prefix), IsSystemHeader);
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69 }
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70
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71 /// AddGnuCPlusPlusIncludePaths - Add the necessary paths to support a gnu
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72 /// libstdc++.
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73 /// Returns true if the \p Base path was found, false if it does not exist.
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74 bool AddGnuCPlusPlusIncludePaths(StringRef Base, StringRef ArchDir,
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75 StringRef Dir32, StringRef Dir64,
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76 const llvm::Triple &triple);
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77
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78 /// AddMinGWCPlusPlusIncludePaths - Add the necessary paths to support a MinGW
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79 /// libstdc++.
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80 void AddMinGWCPlusPlusIncludePaths(StringRef Base,
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81 StringRef Arch,
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82 StringRef Version);
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83
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84 // AddDefaultCIncludePaths - Add paths that should always be searched.
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85 void AddDefaultCIncludePaths(const llvm::Triple &triple,
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86 const HeaderSearchOptions &HSOpts);
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87
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88 // AddDefaultCPlusPlusIncludePaths - Add paths that should be searched when
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89 // compiling c++.
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90 void AddDefaultCPlusPlusIncludePaths(const LangOptions &LangOpts,
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91 const llvm::Triple &triple,
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92 const HeaderSearchOptions &HSOpts);
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93
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94 /// AddDefaultSystemIncludePaths - Adds the default system include paths so
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95 /// that e.g. stdio.h is found.
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96 void AddDefaultIncludePaths(const LangOptions &Lang,
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97 const llvm::Triple &triple,
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98 const HeaderSearchOptions &HSOpts);
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99
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100 /// Realize - Merges all search path lists into one list and send it to
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101 /// HeaderSearch.
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102 void Realize(const LangOptions &Lang);
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103 };
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104
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105 } // end anonymous namespace.
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106
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107 static bool CanPrefixSysroot(StringRef Path) {
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108 #if defined(_WIN32)
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109 return !Path.empty() && llvm::sys::path::is_separator(Path[0]);
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110 #else
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111 return llvm::sys::path::is_absolute(Path);
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112 #endif
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113 }
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114
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115 bool InitHeaderSearch::AddPath(const Twine &Path, IncludeDirGroup Group,
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116 bool isFramework) {
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117 // Add the path with sysroot prepended, if desired and this is a system header
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118 // group.
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119 if (HasSysroot) {
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120 SmallString<256> MappedPathStorage;
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121 StringRef MappedPathStr = Path.toStringRef(MappedPathStorage);
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122 if (CanPrefixSysroot(MappedPathStr)) {
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123 return AddUnmappedPath(IncludeSysroot + Path, Group, isFramework);
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124 }
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125 }
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126
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127 return AddUnmappedPath(Path, Group, isFramework);
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128 }
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129
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130 bool InitHeaderSearch::AddUnmappedPath(const Twine &Path, IncludeDirGroup Group,
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131 bool isFramework) {
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132 assert(!Path.isTriviallyEmpty() && "can't handle empty path here");
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133
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134 FileManager &FM = Headers.getFileMgr();
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135 SmallString<256> MappedPathStorage;
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136 StringRef MappedPathStr = Path.toStringRef(MappedPathStorage);
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137
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138 // If use system headers while cross-compiling, emit the warning.
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139 if (HasSysroot && (MappedPathStr.startswith("/usr/include") ||
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140 MappedPathStr.startswith("/usr/local/include"))) {
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141 Headers.getDiags().Report(diag::warn_poison_system_directories)
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142 << MappedPathStr;
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143 }
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144
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145 // Compute the DirectoryLookup type.
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146 SrcMgr::CharacteristicKind Type;
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147 if (Group == Quoted || Group == Angled || Group == IndexHeaderMap) {
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148 Type = SrcMgr::C_User;
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149 } else if (Group == ExternCSystem) {
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150 Type = SrcMgr::C_ExternCSystem;
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151 } else {
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152 Type = SrcMgr::C_System;
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153 }
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154
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155 // If the directory exists, add it.
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156 if (auto DE = FM.getOptionalDirectoryRef(MappedPathStr)) {
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157 IncludePath.push_back(
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158 std::make_pair(Group, DirectoryLookup(*DE, Type, isFramework)));
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159 return true;
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160 }
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161
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162 // Check to see if this is an apple-style headermap (which are not allowed to
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163 // be frameworks).
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164 if (!isFramework) {
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165 if (auto FE = FM.getFile(MappedPathStr)) {
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166 if (const HeaderMap *HM = Headers.CreateHeaderMap(*FE)) {
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167 // It is a headermap, add it to the search path.
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168 IncludePath.push_back(
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169 std::make_pair(Group,
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170 DirectoryLookup(HM, Type, Group == IndexHeaderMap)));
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171 return true;
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172 }
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173 }
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174 }
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175
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176 if (Verbose)
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177 llvm::errs() << "ignoring nonexistent directory \""
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178 << MappedPathStr << "\"\n";
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179 return false;
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180 }
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181
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182 bool InitHeaderSearch::AddGnuCPlusPlusIncludePaths(StringRef Base,
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183 StringRef ArchDir,
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184 StringRef Dir32,
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185 StringRef Dir64,
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186 const llvm::Triple &triple) {
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187 // Add the base dir
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188 bool IsBaseFound = AddPath(Base, CXXSystem, false);
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189
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190 // Add the multilib dirs
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191 llvm::Triple::ArchType arch = triple.getArch();
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192 bool is64bit = arch == llvm::Triple::ppc64 || arch == llvm::Triple::x86_64;
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193 if (is64bit)
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194 AddPath(Base + "/" + ArchDir + "/" + Dir64, CXXSystem, false);
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195 else
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196 AddPath(Base + "/" + ArchDir + "/" + Dir32, CXXSystem, false);
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197
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198 // Add the backward dir
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199 AddPath(Base + "/backward", CXXSystem, false);
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200 return IsBaseFound;
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201 }
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202
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203 void InitHeaderSearch::AddMinGWCPlusPlusIncludePaths(StringRef Base,
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204 StringRef Arch,
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205 StringRef Version) {
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206 AddPath(Base + "/" + Arch + "/" + Version + "/include/c++",
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207 CXXSystem, false);
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208 AddPath(Base + "/" + Arch + "/" + Version + "/include/c++/" + Arch,
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209 CXXSystem, false);
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210 AddPath(Base + "/" + Arch + "/" + Version + "/include/c++/backward",
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211 CXXSystem, false);
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212 }
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213
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214 void InitHeaderSearch::AddDefaultCIncludePaths(const llvm::Triple &triple,
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215 const HeaderSearchOptions &HSOpts) {
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216 llvm::Triple::OSType os = triple.getOS();
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217
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218 if (triple.isOSDarwin()) {
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219 llvm_unreachable("Include management is handled in the driver.");
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220 }
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221
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222 if (HSOpts.UseStandardSystemIncludes) {
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223 switch (os) {
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224 case llvm::Triple::CloudABI:
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225 case llvm::Triple::FreeBSD:
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226 case llvm::Triple::NetBSD:
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227 case llvm::Triple::OpenBSD:
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228 case llvm::Triple::NaCl:
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229 case llvm::Triple::PS4:
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230 case llvm::Triple::ELFIAMCU:
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231 case llvm::Triple::Fuchsia:
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232 break;
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233 case llvm::Triple::Win32:
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234 if (triple.getEnvironment() != llvm::Triple::Cygnus)
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235 break;
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236 LLVM_FALLTHROUGH;
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237 default:
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238 // FIXME: temporary hack: hard-coded paths.
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239 AddPath("/usr/local/include", System, false);
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240 break;
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241 }
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242 }
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243
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244 // Builtin includes use #include_next directives and should be positioned
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245 // just prior C include dirs.
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246 if (HSOpts.UseBuiltinIncludes) {
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247 // Ignore the sys root, we *always* look for clang headers relative to
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248 // supplied path.
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249 SmallString<128> P = StringRef(HSOpts.ResourceDir);
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250 llvm::sys::path::append(P, "include");
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251 AddUnmappedPath(P, ExternCSystem, false);
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252 }
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253
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254 // All remaining additions are for system include directories, early exit if
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255 // we aren't using them.
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256 if (!HSOpts.UseStandardSystemIncludes)
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257 return;
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258
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259 // Add dirs specified via 'configure --with-c-include-dirs'.
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260 StringRef CIncludeDirs(C_INCLUDE_DIRS);
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261 if (CIncludeDirs != "") {
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262 SmallVector<StringRef, 5> dirs;
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263 CIncludeDirs.split(dirs, ":");
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264 for (StringRef dir : dirs)
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265 AddPath(dir, ExternCSystem, false);
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266 return;
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267 }
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268
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269 switch (os) {
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270 case llvm::Triple::Linux:
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271 case llvm::Triple::Hurd:
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272 case llvm::Triple::Solaris:
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273 llvm_unreachable("Include management is handled in the driver.");
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274
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275 case llvm::Triple::CloudABI: {
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276 // <sysroot>/<triple>/include
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277 SmallString<128> P = StringRef(HSOpts.ResourceDir);
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278 llvm::sys::path::append(P, "../../..", triple.str(), "include");
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279 AddPath(P, System, false);
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280 break;
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281 }
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282
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283 case llvm::Triple::Haiku:
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284 AddPath("/boot/system/non-packaged/develop/headers", System, false);
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285 AddPath("/boot/system/develop/headers/os", System, false);
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286 AddPath("/boot/system/develop/headers/os/app", System, false);
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287 AddPath("/boot/system/develop/headers/os/arch", System, false);
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288 AddPath("/boot/system/develop/headers/os/device", System, false);
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289 AddPath("/boot/system/develop/headers/os/drivers", System, false);
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290 AddPath("/boot/system/develop/headers/os/game", System, false);
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291 AddPath("/boot/system/develop/headers/os/interface", System, false);
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292 AddPath("/boot/system/develop/headers/os/kernel", System, false);
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293 AddPath("/boot/system/develop/headers/os/locale", System, false);
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294 AddPath("/boot/system/develop/headers/os/mail", System, false);
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295 AddPath("/boot/system/develop/headers/os/media", System, false);
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296 AddPath("/boot/system/develop/headers/os/midi", System, false);
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297 AddPath("/boot/system/develop/headers/os/midi2", System, false);
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298 AddPath("/boot/system/develop/headers/os/net", System, false);
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299 AddPath("/boot/system/develop/headers/os/opengl", System, false);
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300 AddPath("/boot/system/develop/headers/os/storage", System, false);
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301 AddPath("/boot/system/develop/headers/os/support", System, false);
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302 AddPath("/boot/system/develop/headers/os/translation", System, false);
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303 AddPath("/boot/system/develop/headers/os/add-ons/graphics", System, false);
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304 AddPath("/boot/system/develop/headers/os/add-ons/input_server", System, false);
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305 AddPath("/boot/system/develop/headers/os/add-ons/mail_daemon", System, false);
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306 AddPath("/boot/system/develop/headers/os/add-ons/registrar", System, false);
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307 AddPath("/boot/system/develop/headers/os/add-ons/screen_saver", System, false);
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308 AddPath("/boot/system/develop/headers/os/add-ons/tracker", System, false);
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309 AddPath("/boot/system/develop/headers/os/be_apps/Deskbar", System, false);
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310 AddPath("/boot/system/develop/headers/os/be_apps/NetPositive", System, false);
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311 AddPath("/boot/system/develop/headers/os/be_apps/Tracker", System, false);
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312 AddPath("/boot/system/develop/headers/3rdparty", System, false);
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313 AddPath("/boot/system/develop/headers/bsd", System, false);
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314 AddPath("/boot/system/develop/headers/glibc", System, false);
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315 AddPath("/boot/system/develop/headers/posix", System, false);
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316 AddPath("/boot/system/develop/headers", System, false);
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317 break;
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318 case llvm::Triple::RTEMS:
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319 break;
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320 case llvm::Triple::Win32:
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321 switch (triple.getEnvironment()) {
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322 default: llvm_unreachable("Include management is handled in the driver.");
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323 case llvm::Triple::Cygnus:
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324 AddPath("/usr/include/w32api", System, false);
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325 break;
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326 case llvm::Triple::GNU:
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327 break;
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328 }
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329 break;
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330 default:
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331 break;
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332 }
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333
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334 switch (os) {
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335 case llvm::Triple::CloudABI:
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336 case llvm::Triple::RTEMS:
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337 case llvm::Triple::NaCl:
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338 case llvm::Triple::ELFIAMCU:
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339 case llvm::Triple::Fuchsia:
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340 break;
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341 case llvm::Triple::PS4: {
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342 // <isysroot> gets prepended later in AddPath().
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343 std::string BaseSDKPath = "";
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344 if (!HasSysroot) {
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345 const char *envValue = getenv("SCE_ORBIS_SDK_DIR");
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346 if (envValue)
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347 BaseSDKPath = envValue;
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348 else {
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349 // HSOpts.ResourceDir variable contains the location of Clang's
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350 // resource files.
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351 // Assuming that Clang is configured for PS4 without
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352 // --with-clang-resource-dir option, the location of Clang's resource
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353 // files is <SDK_DIR>/host_tools/lib/clang
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354 SmallString<128> P = StringRef(HSOpts.ResourceDir);
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355 llvm::sys::path::append(P, "../../..");
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356 BaseSDKPath = std::string(P.str());
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357 }
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358 }
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359 AddPath(BaseSDKPath + "/target/include", System, false);
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360 if (triple.isPS4CPU())
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361 AddPath(BaseSDKPath + "/target/include_common", System, false);
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362 LLVM_FALLTHROUGH;
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363 }
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364 default:
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365 AddPath("/usr/include", ExternCSystem, false);
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366 break;
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367 }
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368 }
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369
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370 void InitHeaderSearch::AddDefaultCPlusPlusIncludePaths(
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371 const LangOptions &LangOpts, const llvm::Triple &triple,
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372 const HeaderSearchOptions &HSOpts) {
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373 llvm::Triple::OSType os = triple.getOS();
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374 // FIXME: temporary hack: hard-coded paths.
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375
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|
|
376 if (triple.isOSDarwin()) {
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377 llvm_unreachable("Include management is handled in the driver.");
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|
378 }
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379
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380 switch (os) {
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381 case llvm::Triple::Linux:
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382 case llvm::Triple::Hurd:
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383 case llvm::Triple::Solaris:
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384 llvm_unreachable("Include management is handled in the driver.");
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|
385 break;
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386 case llvm::Triple::Win32:
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|
387 switch (triple.getEnvironment()) {
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388 default: llvm_unreachable("Include management is handled in the driver.");
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389 case llvm::Triple::Cygnus:
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390 // Cygwin-1.7
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391 AddMinGWCPlusPlusIncludePaths("/usr/lib/gcc", "i686-pc-cygwin", "4.7.3");
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392 AddMinGWCPlusPlusIncludePaths("/usr/lib/gcc", "i686-pc-cygwin", "4.5.3");
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393 AddMinGWCPlusPlusIncludePaths("/usr/lib/gcc", "i686-pc-cygwin", "4.3.4");
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394 // g++-4 / Cygwin-1.5
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395 AddMinGWCPlusPlusIncludePaths("/usr/lib/gcc", "i686-pc-cygwin", "4.3.2");
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|
396 break;
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|
|
397 }
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|
398 break;
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|
|
399 case llvm::Triple::DragonFly:
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|
400 AddPath("/usr/include/c++/5.0", CXXSystem, false);
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401 break;
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|
402 case llvm::Triple::Minix:
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403 AddGnuCPlusPlusIncludePaths("/usr/gnu/include/c++/4.4.3",
|
|
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404 "", "", "", triple);
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405 break;
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406 default:
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|
407 break;
|
|
|
408 }
|
|
|
409 }
|
|
|
410
|
|
|
411 void InitHeaderSearch::AddDefaultIncludePaths(const LangOptions &Lang,
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|
412 const llvm::Triple &triple,
|
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413 const HeaderSearchOptions &HSOpts) {
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414 // NB: This code path is going away. All of the logic is moving into the
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|
|
415 // driver which has the information necessary to do target-specific
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|
416 // selections of default include paths. Each target which moves there will be
|
|
|
417 // exempted from this logic here until we can delete the entire pile of code.
|
|
|
418 switch (triple.getOS()) {
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|
|
419 default:
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|
|
420 break; // Everything else continues to use this routine's logic.
|
|
|
421
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|
|
422 case llvm::Triple::Emscripten:
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|
423 case llvm::Triple::Linux:
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|
424 case llvm::Triple::Hurd:
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|
425 case llvm::Triple::Solaris:
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|
|
426 case llvm::Triple::WASI:
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|
|
427 return;
|
|
|
428
|
|
|
429 case llvm::Triple::Win32:
|
|
|
430 if (triple.getEnvironment() != llvm::Triple::Cygnus ||
|
|
|
431 triple.isOSBinFormatMachO())
|
|
|
432 return;
|
|
|
433 break;
|
|
|
434
|
|
|
435 case llvm::Triple::UnknownOS:
|
|
173
|
436 if (triple.isWasm())
|
|
150
|
437 return;
|
|
|
438 break;
|
|
|
439 }
|
|
|
440
|
|
|
441 // All header search logic is handled in the Driver for Darwin.
|
|
|
442 if (triple.isOSDarwin()) {
|
|
|
443 if (HSOpts.UseStandardSystemIncludes) {
|
|
|
444 // Add the default framework include paths on Darwin.
|
|
|
445 AddPath("/System/Library/Frameworks", System, true);
|
|
|
446 AddPath("/Library/Frameworks", System, true);
|
|
|
447 }
|
|
|
448 return;
|
|
|
449 }
|
|
|
450
|
|
|
451 if (Lang.CPlusPlus && !Lang.AsmPreprocessor &&
|
|
|
452 HSOpts.UseStandardCXXIncludes && HSOpts.UseStandardSystemIncludes) {
|
|
|
453 if (HSOpts.UseLibcxx) {
|
|
|
454 AddPath("/usr/include/c++/v1", CXXSystem, false);
|
|
|
455 } else {
|
|
|
456 AddDefaultCPlusPlusIncludePaths(Lang, triple, HSOpts);
|
|
|
457 }
|
|
|
458 }
|
|
|
459
|
|
|
460 AddDefaultCIncludePaths(triple, HSOpts);
|
|
|
461 }
|
|
|
462
|
|
|
463 /// RemoveDuplicates - If there are duplicate directory entries in the specified
|
|
|
464 /// search list, remove the later (dead) ones. Returns the number of non-system
|
|
|
465 /// headers removed, which is used to update NumAngled.
|
|
|
466 static unsigned RemoveDuplicates(std::vector<DirectoryLookup> &SearchList,
|
|
|
467 unsigned First, bool Verbose) {
|
|
|
468 llvm::SmallPtrSet<const DirectoryEntry *, 8> SeenDirs;
|
|
|
469 llvm::SmallPtrSet<const DirectoryEntry *, 8> SeenFrameworkDirs;
|
|
|
470 llvm::SmallPtrSet<const HeaderMap *, 8> SeenHeaderMaps;
|
|
|
471 unsigned NonSystemRemoved = 0;
|
|
|
472 for (unsigned i = First; i != SearchList.size(); ++i) {
|
|
|
473 unsigned DirToRemove = i;
|
|
|
474
|
|
|
475 const DirectoryLookup &CurEntry = SearchList[i];
|
|
|
476
|
|
|
477 if (CurEntry.isNormalDir()) {
|
|
|
478 // If this isn't the first time we've seen this dir, remove it.
|
|
|
479 if (SeenDirs.insert(CurEntry.getDir()).second)
|
|
|
480 continue;
|
|
|
481 } else if (CurEntry.isFramework()) {
|
|
|
482 // If this isn't the first time we've seen this framework dir, remove it.
|
|
|
483 if (SeenFrameworkDirs.insert(CurEntry.getFrameworkDir()).second)
|
|
|
484 continue;
|
|
|
485 } else {
|
|
|
486 assert(CurEntry.isHeaderMap() && "Not a headermap or normal dir?");
|
|
|
487 // If this isn't the first time we've seen this headermap, remove it.
|
|
|
488 if (SeenHeaderMaps.insert(CurEntry.getHeaderMap()).second)
|
|
|
489 continue;
|
|
|
490 }
|
|
|
491
|
|
|
492 // If we have a normal #include dir/framework/headermap that is shadowed
|
|
|
493 // later in the chain by a system include location, we actually want to
|
|
|
494 // ignore the user's request and drop the user dir... keeping the system
|
|
|
495 // dir. This is weird, but required to emulate GCC's search path correctly.
|
|
|
496 //
|
|
|
497 // Since dupes of system dirs are rare, just rescan to find the original
|
|
|
498 // that we're nuking instead of using a DenseMap.
|
|
|
499 if (CurEntry.getDirCharacteristic() != SrcMgr::C_User) {
|
|
|
500 // Find the dir that this is the same of.
|
|
|
501 unsigned FirstDir;
|
|
|
502 for (FirstDir = First;; ++FirstDir) {
|
|
|
503 assert(FirstDir != i && "Didn't find dupe?");
|
|
|
504
|
|
|
505 const DirectoryLookup &SearchEntry = SearchList[FirstDir];
|
|
|
506
|
|
|
507 // If these are different lookup types, then they can't be the dupe.
|
|
|
508 if (SearchEntry.getLookupType() != CurEntry.getLookupType())
|
|
|
509 continue;
|
|
|
510
|
|
|
511 bool isSame;
|
|
|
512 if (CurEntry.isNormalDir())
|
|
|
513 isSame = SearchEntry.getDir() == CurEntry.getDir();
|
|
|
514 else if (CurEntry.isFramework())
|
|
|
515 isSame = SearchEntry.getFrameworkDir() == CurEntry.getFrameworkDir();
|
|
|
516 else {
|
|
|
517 assert(CurEntry.isHeaderMap() && "Not a headermap or normal dir?");
|
|
|
518 isSame = SearchEntry.getHeaderMap() == CurEntry.getHeaderMap();
|
|
|
519 }
|
|
|
520
|
|
|
521 if (isSame)
|
|
|
522 break;
|
|
|
523 }
|
|
|
524
|
|
|
525 // If the first dir in the search path is a non-system dir, zap it
|
|
|
526 // instead of the system one.
|
|
|
527 if (SearchList[FirstDir].getDirCharacteristic() == SrcMgr::C_User)
|
|
|
528 DirToRemove = FirstDir;
|
|
|
529 }
|
|
|
530
|
|
|
531 if (Verbose) {
|
|
|
532 llvm::errs() << "ignoring duplicate directory \""
|
|
|
533 << CurEntry.getName() << "\"\n";
|
|
|
534 if (DirToRemove != i)
|
|
|
535 llvm::errs() << " as it is a non-system directory that duplicates "
|
|
|
536 << "a system directory\n";
|
|
|
537 }
|
|
|
538 if (DirToRemove != i)
|
|
|
539 ++NonSystemRemoved;
|
|
|
540
|
|
|
541 // This is reached if the current entry is a duplicate. Remove the
|
|
|
542 // DirToRemove (usually the current dir).
|
|
|
543 SearchList.erase(SearchList.begin()+DirToRemove);
|
|
|
544 --i;
|
|
|
545 }
|
|
|
546 return NonSystemRemoved;
|
|
|
547 }
|
|
|
548
|
|
|
549
|
|
|
550 void InitHeaderSearch::Realize(const LangOptions &Lang) {
|
|
|
551 // Concatenate ANGLE+SYSTEM+AFTER chains together into SearchList.
|
|
|
552 std::vector<DirectoryLookup> SearchList;
|
|
|
553 SearchList.reserve(IncludePath.size());
|
|
|
554
|
|
|
555 // Quoted arguments go first.
|
|
|
556 for (auto &Include : IncludePath)
|
|
|
557 if (Include.first == Quoted)
|
|
|
558 SearchList.push_back(Include.second);
|
|
|
559
|
|
|
560 // Deduplicate and remember index.
|
|
|
561 RemoveDuplicates(SearchList, 0, Verbose);
|
|
|
562 unsigned NumQuoted = SearchList.size();
|
|
|
563
|
|
|
564 for (auto &Include : IncludePath)
|
|
|
565 if (Include.first == Angled || Include.first == IndexHeaderMap)
|
|
|
566 SearchList.push_back(Include.second);
|
|
|
567
|
|
|
568 RemoveDuplicates(SearchList, NumQuoted, Verbose);
|
|
|
569 unsigned NumAngled = SearchList.size();
|
|
|
570
|
|
|
571 for (auto &Include : IncludePath)
|
|
|
572 if (Include.first == System || Include.first == ExternCSystem ||
|
|
|
573 (!Lang.ObjC && !Lang.CPlusPlus && Include.first == CSystem) ||
|
|
|
574 (/*FIXME !Lang.ObjC && */ Lang.CPlusPlus &&
|
|
|
575 Include.first == CXXSystem) ||
|
|
|
576 (Lang.ObjC && !Lang.CPlusPlus && Include.first == ObjCSystem) ||
|
|
|
577 (Lang.ObjC && Lang.CPlusPlus && Include.first == ObjCXXSystem))
|
|
|
578 SearchList.push_back(Include.second);
|
|
|
579
|
|
|
580 for (auto &Include : IncludePath)
|
|
|
581 if (Include.first == After)
|
|
|
582 SearchList.push_back(Include.second);
|
|
|
583
|
|
|
584 // Remove duplicates across both the Angled and System directories. GCC does
|
|
|
585 // this and failing to remove duplicates across these two groups breaks
|
|
|
586 // #include_next.
|
|
|
587 unsigned NonSystemRemoved = RemoveDuplicates(SearchList, NumQuoted, Verbose);
|
|
|
588 NumAngled -= NonSystemRemoved;
|
|
|
589
|
|
|
590 bool DontSearchCurDir = false; // TODO: set to true if -I- is set?
|
|
|
591 Headers.SetSearchPaths(SearchList, NumQuoted, NumAngled, DontSearchCurDir);
|
|
|
592
|
|
|
593 Headers.SetSystemHeaderPrefixes(SystemHeaderPrefixes);
|
|
|
594
|
|
|
595 // If verbose, print the list of directories that will be searched.
|
|
|
596 if (Verbose) {
|
|
|
597 llvm::errs() << "#include \"...\" search starts here:\n";
|
|
|
598 for (unsigned i = 0, e = SearchList.size(); i != e; ++i) {
|
|
|
599 if (i == NumQuoted)
|
|
|
600 llvm::errs() << "#include <...> search starts here:\n";
|
|
|
601 StringRef Name = SearchList[i].getName();
|
|
|
602 const char *Suffix;
|
|
|
603 if (SearchList[i].isNormalDir())
|
|
|
604 Suffix = "";
|
|
|
605 else if (SearchList[i].isFramework())
|
|
|
606 Suffix = " (framework directory)";
|
|
|
607 else {
|
|
|
608 assert(SearchList[i].isHeaderMap() && "Unknown DirectoryLookup");
|
|
|
609 Suffix = " (headermap)";
|
|
|
610 }
|
|
|
611 llvm::errs() << " " << Name << Suffix << "\n";
|
|
|
612 }
|
|
|
613 llvm::errs() << "End of search list.\n";
|
|
|
614 }
|
|
|
615 }
|
|
|
616
|
|
|
617 void clang::ApplyHeaderSearchOptions(HeaderSearch &HS,
|
|
|
618 const HeaderSearchOptions &HSOpts,
|
|
|
619 const LangOptions &Lang,
|
|
|
620 const llvm::Triple &Triple) {
|
|
|
621 InitHeaderSearch Init(HS, HSOpts.Verbose, HSOpts.Sysroot);
|
|
|
622
|
|
|
623 // Add the user defined entries.
|
|
|
624 for (unsigned i = 0, e = HSOpts.UserEntries.size(); i != e; ++i) {
|
|
|
625 const HeaderSearchOptions::Entry &E = HSOpts.UserEntries[i];
|
|
|
626 if (E.IgnoreSysRoot) {
|
|
|
627 Init.AddUnmappedPath(E.Path, E.Group, E.IsFramework);
|
|
|
628 } else {
|
|
|
629 Init.AddPath(E.Path, E.Group, E.IsFramework);
|
|
|
630 }
|
|
|
631 }
|
|
|
632
|
|
|
633 Init.AddDefaultIncludePaths(Lang, Triple, HSOpts);
|
|
|
634
|
|
|
635 for (unsigned i = 0, e = HSOpts.SystemHeaderPrefixes.size(); i != e; ++i)
|
|
|
636 Init.AddSystemHeaderPrefix(HSOpts.SystemHeaderPrefixes[i].Prefix,
|
|
|
637 HSOpts.SystemHeaderPrefixes[i].IsSystemHeader);
|
|
|
638
|
|
|
639 if (HSOpts.UseBuiltinIncludes) {
|
|
|
640 // Set up the builtin include directory in the module map.
|
|
|
641 SmallString<128> P = StringRef(HSOpts.ResourceDir);
|
|
|
642 llvm::sys::path::append(P, "include");
|
|
|
643 if (auto Dir = HS.getFileMgr().getDirectory(P))
|
|
|
644 HS.getModuleMap().setBuiltinIncludeDir(*Dir);
|
|
|
645 }
|
|
|
646
|
|
|
647 Init.Realize(Lang);
|
|
|
648 }
|
