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145
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1 /* d-incpath.cc -- Set up combined import paths for the D frontend.
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2 Copyright (C) 2006-2020 Free Software Foundation, Inc.
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3
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4 GCC is free software; you can redistribute it and/or modify
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5 it under the terms of the GNU General Public License as published by
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6 the Free Software Foundation; either version 3, or (at your option)
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7 any later version.
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8
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9 GCC is distributed in the hope that it will be useful,
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10 but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 GNU General Public License for more details.
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13
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14 You should have received a copy of the GNU General Public License
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15 along with GCC; see the file COPYING3. If not see
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16 <http://www.gnu.org/licenses/>. */
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17
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18 #include "config.h"
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19 #include "system.h"
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20 #include "coretypes.h"
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21
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22 #include "dmd/globals.h"
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23
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24 #include "cppdefault.h"
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25
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26 /* Look for directories that start with the standard prefix.
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27 "Translate" them, i.e: replace /usr/local/lib/gcc with
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28 IPREFIX and search them first. Based on incpath.c. */
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29
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30 static char *
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31 prefixed_path (const char *path, const char *iprefix)
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32 {
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33 size_t len;
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34
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35 if (cpp_relocated () && (len = cpp_PREFIX_len) != 0)
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36 {
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37 if (!strncmp (path, cpp_PREFIX, len))
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38 {
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39 static const char *relocated_prefix;
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40 /* If this path starts with the configure-time prefix,
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41 but the compiler has been relocated, replace it
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42 with the run-time prefix. */
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43 if (!relocated_prefix)
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44 {
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45 /* Make relative prefix expects the first argument
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46 to be a program, not a directory. */
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47 char *dummy = concat (gcc_exec_prefix, "dummy", NULL);
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48 relocated_prefix
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49 = make_relative_prefix (dummy,
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50 cpp_EXEC_PREFIX,
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51 cpp_PREFIX);
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52 free (dummy);
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53 }
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54
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55 return concat (relocated_prefix, path + len, NULL);
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56 }
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57 }
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58
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59 if (iprefix && (len = cpp_GCC_INCLUDE_DIR_len) != 0)
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60 {
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61 if (!strncmp (path, cpp_GCC_INCLUDE_DIR, len))
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62 return concat (iprefix, path + len, NULL);
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63 }
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64
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65 return xstrdup (path);
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66 }
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67
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68 /* Add PATHS to the global import lookup path. */
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69
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70 static void
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71 add_globalpaths (Strings *paths)
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72 {
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73 if (paths)
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74 {
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75 if (!global.path)
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76 global.path = new Strings ();
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77
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78 for (size_t i = 0; i < paths->dim; i++)
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79 {
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80 const char *path = (*paths)[i];
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81 const char *target = lrealpath (path);
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82
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83 if (target == NULL || !FileName::exists (target))
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84 {
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85 if (target)
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86 free (CONST_CAST (char *, target));
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87 continue;
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88 }
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89
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90 global.path->push (target);
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91 }
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92 }
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93 }
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94
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95 /* Add PATHS to the global file import lookup path. */
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96
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97 static void
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98 add_filepaths (Strings *paths)
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99 {
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100 if (paths)
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101 {
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102 if (!global.filePath)
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103 global.filePath = new Strings ();
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104
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105 for (size_t i = 0; i < paths->dim; i++)
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106 {
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107 const char *path = (*paths)[i];
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108 const char *target = lrealpath (path);
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109
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110 if (!FileName::exists (target))
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111 {
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112 free (CONST_CAST (char *, target));
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113 continue;
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114 }
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115
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116 global.filePath->push (target);
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117 }
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118 }
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119 }
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120
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121 /* Add all search directories to compiler runtime.
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122 if STDINC, also include standard library paths. */
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123
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124 void
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125 add_import_paths (const char *iprefix, const char *imultilib, bool stdinc)
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126 {
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127 if (stdinc)
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128 {
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129 for (const default_include *p = cpp_include_defaults; p->fname; p++)
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130 {
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131 char *path;
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132
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133 /* Ignore C++ paths. */
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134 if (p->cplusplus)
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135 continue;
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136
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137 if (!p->add_sysroot)
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138 path = prefixed_path (p->fname, iprefix);
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139 else
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140 path = xstrdup (p->fname);
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141
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142 /* Add D-specific suffix. */
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143 path = concat (path, "/d", NULL);
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144
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145 /* Ignore duplicate entries. */
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146 bool found = false;
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147 for (size_t i = 0; i < global.params.imppath->dim; i++)
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148 {
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149 if (strcmp (path, (*global.params.imppath)[i]) == 0)
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150 {
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151 found = true;
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152 break;
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153 }
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154 }
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155
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156 if (found)
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157 {
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158 free (path);
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159 continue;
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160 }
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161
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162 /* Multilib support. */
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163 if (imultilib)
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164 {
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165 char *target_path = concat (path, "/", imultilib, NULL);
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166 global.params.imppath->shift (target_path);
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167 }
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168
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169 global.params.imppath->shift (path);
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170 }
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171 }
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172
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173 /* Add import search paths. */
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174 if (global.params.imppath)
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175 {
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176 for (size_t i = 0; i < global.params.imppath->dim; i++)
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177 {
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178 const char *path = (*global.params.imppath)[i];
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179 if (path)
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180 add_globalpaths (FileName::splitPath (path));
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181 }
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182 }
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183
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184 /* Add string import search paths. */
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185 if (global.params.fileImppath)
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186 {
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187 for (size_t i = 0; i < global.params.fileImppath->dim; i++)
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188 {
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189 const char *path = (*global.params.fileImppath)[i];
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190 if (path)
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191 add_filepaths (FileName::splitPath (path));
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192 }
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193 }
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194 }
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195
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