Mercurial > projects > ldc
annotate dmd2/link.c.nolink @ 1201:14a30bada44f
Remove unnecessary GCC_EXE CMake flag. Closes #208, thanks impulze.
author | Christian Kamm <kamm incasoftware de> |
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date | Sun, 12 Apr 2009 13:50:18 +0200 |
parents | f04dde6e882c |
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rev | line source |
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758
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1 |
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2 // Copyright (c) 1999-2008 by Digital Mars |
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3 // All Rights Reserved |
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4 // written by Walter Bright |
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5 // http://www.digitalmars.com |
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6 // License for redistribution is by either the Artistic License |
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7 // in artistic.txt, or the GNU General Public License in gnu.txt. |
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8 // See the included readme.txt for details. |
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9 |
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10 |
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11 #include <stdio.h> |
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12 #include <ctype.h> |
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13 #include <assert.h> |
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14 #include <stdarg.h> |
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15 #include <string.h> |
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16 #include <stdlib.h> |
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17 |
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18 #if _WIN32 |
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19 #include <process.h> |
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20 #endif |
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21 |
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22 #if linux |
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23 #include <sys/types.h> |
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24 #include <sys/wait.h> |
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25 #include <unistd.h> |
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26 #endif |
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27 |
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28 #include "root.h" |
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29 |
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30 #include "mars.h" |
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31 |
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32 #include "mem.h" |
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33 |
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34 int executecmd(char *cmd, char *args, int useenv); |
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35 int executearg0(char *cmd, char *args); |
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36 |
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37 /**************************************** |
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38 * Write filename to cmdbuf, quoting if necessary. |
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39 */ |
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40 |
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41 void writeFilename(OutBuffer *buf, char *filename, size_t len) |
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42 { |
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43 /* Loop and see if we need to quote |
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44 */ |
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45 for (size_t i = 0; i < len; i++) |
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46 { char c = filename[i]; |
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47 |
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48 if (isalnum(c) || c == '_') |
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49 continue; |
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50 |
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51 /* Need to quote |
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52 */ |
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53 buf->writeByte('"'); |
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54 buf->write(filename, len); |
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55 buf->writeByte('"'); |
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56 return; |
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57 } |
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58 |
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59 /* No quoting necessary |
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60 */ |
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61 buf->write(filename, len); |
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62 } |
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63 |
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64 void writeFilename(OutBuffer *buf, char *filename) |
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65 { |
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66 writeFilename(buf, filename, strlen(filename)); |
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67 } |
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68 |
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69 /***************************** |
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70 * Run the linker. Return status of execution. |
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71 */ |
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72 |
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73 int runLINK() |
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74 { |
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75 #if _WIN32 |
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76 char *p; |
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77 int i; |
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78 int status; |
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79 OutBuffer cmdbuf; |
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80 |
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81 global.params.libfiles->push((void *) "user32"); |
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82 global.params.libfiles->push((void *) "kernel32"); |
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83 |
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84 for (i = 0; i < global.params.objfiles->dim; i++) |
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85 { |
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86 if (i) |
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87 cmdbuf.writeByte('+'); |
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88 p = (char *)global.params.objfiles->data[i]; |
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89 char *ext = FileName::ext(p); |
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90 if (ext) |
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91 // Write name sans extension |
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92 writeFilename(&cmdbuf, p, ext - p - 1); |
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93 else |
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94 writeFilename(&cmdbuf, p); |
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95 } |
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96 cmdbuf.writeByte(','); |
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97 if (global.params.exefile) |
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98 writeFilename(&cmdbuf, global.params.exefile); |
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99 else |
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100 { /* Generate exe file name from first obj name. |
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101 * No need to add it to cmdbuf because the linker will default to it. |
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102 */ |
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103 char *n = (char *)global.params.objfiles->data[0]; |
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104 n = FileName::name(n); |
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105 FileName *fn = FileName::forceExt(n, "exe"); |
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106 global.params.exefile = fn->toChars(); |
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107 } |
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108 |
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109 // Make sure path to exe file exists |
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110 { char *p = FileName::path(global.params.exefile); |
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111 FileName::ensurePathExists(p); |
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112 mem.free(p); |
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113 } |
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114 |
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115 cmdbuf.writeByte(','); |
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116 if (global.params.run) |
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117 cmdbuf.writestring("nul"); |
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118 // if (mapfile) |
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119 // cmdbuf.writestring(output); |
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120 cmdbuf.writeByte(','); |
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121 |
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122 for (i = 0; i < global.params.libfiles->dim; i++) |
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123 { |
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124 if (i) |
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125 cmdbuf.writeByte('+'); |
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126 writeFilename(&cmdbuf, (char *) global.params.libfiles->data[i]); |
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127 } |
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128 |
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129 if (global.params.deffile) |
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130 { |
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131 cmdbuf.writeByte(','); |
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132 writeFilename(&cmdbuf, global.params.deffile); |
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133 } |
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134 |
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135 /* Eliminate unnecessary trailing commas */ |
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136 while (1) |
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137 { i = cmdbuf.offset; |
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138 if (!i || cmdbuf.data[i - 1] != ',') |
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139 break; |
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140 cmdbuf.offset--; |
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141 } |
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142 |
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143 if (global.params.resfile) |
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144 { |
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145 cmdbuf.writestring("/RC:"); |
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146 writeFilename(&cmdbuf, global.params.resfile); |
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147 } |
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148 |
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149 #if 0 |
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150 if (mapfile) |
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151 cmdbuf.writestring("/m"); |
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152 if (debuginfo) |
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153 cmdbuf.writestring("/li"); |
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154 if (codeview) |
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155 { |
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156 cmdbuf.writestring("/co"); |
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157 if (codeview3) |
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158 cmdbuf.writestring(":3"); |
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159 } |
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160 #else |
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161 if (global.params.symdebug) |
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162 cmdbuf.writestring("/co"); |
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163 #endif |
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164 |
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165 cmdbuf.writestring("/noi"); |
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166 for (i = 0; i < global.params.linkswitches->dim; i++) |
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167 { |
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168 cmdbuf.writestring((char *) global.params.linkswitches->data[i]); |
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169 } |
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170 cmdbuf.writeByte(';'); |
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171 |
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172 p = cmdbuf.toChars(); |
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173 |
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174 FileName *lnkfilename = NULL; |
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175 size_t plen = strlen(p); |
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176 if (plen > 7000) |
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177 { |
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178 lnkfilename = FileName::forceExt(global.params.exefile, "lnk"); |
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179 File flnk(lnkfilename); |
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180 flnk.setbuffer(p, plen); |
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181 flnk.ref = 1; |
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182 if (flnk.write()) |
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183 error("error writing file %s", lnkfilename); |
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184 if (lnkfilename->len() < plen) |
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185 sprintf(p, "@%s", lnkfilename->toChars()); |
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186 } |
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187 |
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188 char *linkcmd = getenv("LINKCMD"); |
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189 if (!linkcmd) |
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190 linkcmd = "link"; |
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191 status = executecmd(linkcmd, p, 1); |
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192 if (lnkfilename) |
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193 { |
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194 remove(lnkfilename->toChars()); |
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195 delete lnkfilename; |
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196 } |
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197 return status; |
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198 #elif linux |
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199 pid_t childpid; |
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200 int i; |
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201 int status; |
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202 |
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203 // Build argv[] |
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204 Array argv; |
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205 |
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206 const char *cc = getenv("CC"); |
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207 if (!cc) |
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208 cc = "gcc"; |
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209 argv.push((void *)cc); |
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210 argv.insert(1, global.params.objfiles); |
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211 |
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212 // None of that a.out stuff. Use explicit exe file name, or |
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213 // generate one from name of first source file. |
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214 argv.push((void *)"-o"); |
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215 if (global.params.exefile) |
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216 { |
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217 argv.push(global.params.exefile); |
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218 } |
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219 else |
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220 { // Generate exe file name from first obj name |
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221 char *n = (char *)global.params.objfiles->data[0]; |
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222 char *e; |
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223 char *ex; |
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224 |
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225 n = FileName::name(n); |
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226 e = FileName::ext(n); |
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227 if (e) |
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228 { |
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229 e--; // back up over '.' |
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230 ex = (char *)mem.malloc(e - n + 1); |
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231 memcpy(ex, n, e - n); |
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232 ex[e - n] = 0; |
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233 } |
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234 else |
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235 ex = (char *)"a.out"; // no extension, so give up |
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236 argv.push(ex); |
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237 global.params.exefile = ex; |
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238 } |
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239 |
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240 // Make sure path to exe file exists |
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241 { char *p = FileName::path(global.params.exefile); |
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242 FileName::ensurePathExists(p); |
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243 mem.free(p); |
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244 } |
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245 |
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246 argv.insert(argv.dim, global.params.libfiles); |
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247 |
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248 if (global.params.symdebug) |
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249 argv.push((void *)"-g"); |
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250 |
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251 argv.push((void *)"-m32"); |
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252 |
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253 if (0 && global.params.exefile) |
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254 { |
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255 /* This switch enables what is known as 'smart linking' |
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256 * in the Windows world, where unreferenced sections |
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257 * are removed from the executable. It eliminates unreferenced |
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258 * functions, essentially making a 'library' out of a module. |
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259 * Although it is documented to work with ld version 2.13, |
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260 * in practice it does not, but just seems to be ignored. |
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261 * Thomas Kuehne has verified that it works with ld 2.16.1. |
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262 * BUG: disabled because it causes exception handling to fail |
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263 */ |
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264 argv.push((void *)"-Xlinker"); |
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265 argv.push((void *)"--gc-sections"); |
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266 } |
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267 |
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268 for (i = 0; i < global.params.linkswitches->dim; i++) |
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269 { char *p = (char *)global.params.linkswitches->data[i]; |
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270 if (!p || !p[0] || !(p[0] == '-' && p[1] == 'l')) |
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271 // Don't need -Xlinker if switch starts with -l |
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272 argv.push((void *)"-Xlinker"); |
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273 argv.push((void *) p); |
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274 } |
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275 |
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276 /* Standard libraries must go after user specified libraries |
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277 * passed with -l. |
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278 */ |
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279 const char *libname = (global.params.symdebug) |
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280 ? global.params.debuglibname |
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281 : global.params.defaultlibname; |
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282 char *buf = (char *)malloc(2 + strlen(libname) + 1); |
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283 strcpy(buf, "-l"); |
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284 strcpy(buf + 2, libname); |
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285 argv.push((void *)buf); // turns into /usr/lib/libphobos2.a |
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286 |
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287 argv.push((void *)"-ldruntime"); |
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288 argv.push((void *)"-lpthread"); |
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289 argv.push((void *)"-lm"); |
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290 |
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291 if (!global.params.quiet || global.params.verbose) |
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292 { |
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293 // Print it |
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294 for (i = 0; i < argv.dim; i++) |
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295 printf("%s ", (char *)argv.data[i]); |
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296 printf("\n"); |
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297 fflush(stdout); |
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298 } |
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299 |
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300 argv.push(NULL); |
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301 childpid = fork(); |
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302 if (childpid == 0) |
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303 { |
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304 execvp((char *)argv.data[0], (char **)argv.data); |
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305 perror((char *)argv.data[0]); // failed to execute |
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306 return -1; |
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307 } |
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308 |
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309 waitpid(childpid, &status, 0); |
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310 |
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311 status=WEXITSTATUS(status); |
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312 if (status) |
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313 printf("--- errorlevel %d\n", status); |
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314 return status; |
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315 #else |
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316 printf ("Linking is not yet supported for this version of DMD.\n"); |
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317 return -1; |
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318 #endif |
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319 } |
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320 |
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321 /********************************** |
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322 * Delete generated EXE file. |
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323 */ |
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324 |
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325 void deleteExeFile() |
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326 { |
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327 if (global.params.exefile) |
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328 { |
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329 //printf("deleteExeFile() %s\n", global.params.exefile); |
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330 remove(global.params.exefile); |
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331 } |
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332 } |
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333 |
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334 /****************************** |
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335 * Execute a rule. Return the status. |
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336 * cmd program to run |
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337 * args arguments to cmd, as a string |
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338 * useenv if cmd knows about _CMDLINE environment variable |
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339 */ |
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340 |
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341 #if _WIN32 |
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342 int executecmd(char *cmd, char *args, int useenv) |
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343 { |
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344 int status; |
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345 char *buff; |
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346 size_t len; |
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347 |
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348 if (!global.params.quiet || global.params.verbose) |
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349 { |
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350 printf("%s %s\n", cmd, args); |
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351 fflush(stdout); |
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352 } |
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353 |
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354 if ((len = strlen(args)) > 255) |
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355 { char *q; |
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356 static char envname[] = "@_CMDLINE"; |
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357 |
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358 envname[0] = '@'; |
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359 switch (useenv) |
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360 { case 0: goto L1; |
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361 case 2: envname[0] = '%'; break; |
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362 } |
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363 q = (char *) alloca(sizeof(envname) + len + 1); |
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364 sprintf(q,"%s=%s", envname + 1, args); |
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365 status = putenv(q); |
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366 if (status == 0) |
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367 args = envname; |
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368 else |
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369 { |
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370 L1: |
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371 error("command line length of %d is too long",len); |
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372 } |
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373 } |
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374 |
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375 status = executearg0(cmd,args); |
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376 #if _WIN32 |
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377 if (status == -1) |
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378 status = spawnlp(0,cmd,cmd,args,NULL); |
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379 #endif |
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380 // if (global.params.verbose) |
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381 // printf("\n"); |
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382 if (status) |
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383 { |
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384 if (status == -1) |
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385 printf("Can't run '%s', check PATH\n", cmd); |
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386 else |
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387 printf("--- errorlevel %d\n", status); |
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388 } |
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389 return status; |
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390 } |
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391 #endif |
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392 |
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393 /************************************** |
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394 * Attempt to find command to execute by first looking in the directory |
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395 * where DMD was run from. |
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396 * Returns: |
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397 * -1 did not find command there |
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398 * !=-1 exit status from command |
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399 */ |
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400 |
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401 #if _WIN32 |
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402 int executearg0(char *cmd, char *args) |
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403 { |
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404 char *file; |
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405 char *argv0 = global.params.argv0; |
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406 |
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407 //printf("argv0='%s', cmd='%s', args='%s'\n",argv0,cmd,args); |
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408 |
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409 // If cmd is fully qualified, we don't do this |
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410 if (FileName::absolute(cmd)) |
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411 return -1; |
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412 |
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413 file = FileName::replaceName(argv0, cmd); |
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414 |
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415 //printf("spawning '%s'\n",file); |
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416 #if _WIN32 |
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417 return spawnl(0,file,file,args,NULL); |
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418 #elif linux |
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419 char *full; |
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420 int cmdl = strlen(cmd); |
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421 |
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422 full = (char*) mem.malloc(cmdl + strlen(args) + 2); |
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423 if (full == NULL) |
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424 return 1; |
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425 strcpy(full, cmd); |
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426 full [cmdl] = ' '; |
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427 strcpy(full + cmdl + 1, args); |
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428 |
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429 int result = system(full); |
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430 |
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431 mem.free(full); |
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432 return result; |
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433 #else |
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434 assert(0); |
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435 #endif |
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436 } |
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437 #endif |
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438 |
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439 /*************************************** |
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440 * Run the compiled program. |
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441 * Return exit status. |
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442 */ |
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443 |
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444 int runProgram() |
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445 { |
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446 //printf("runProgram()\n"); |
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447 if (global.params.verbose) |
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448 { |
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449 printf("%s", global.params.exefile); |
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450 for (size_t i = 0; i < global.params.runargs_length; i++) |
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451 printf(" %s", (char *)global.params.runargs[i]); |
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452 printf("\n"); |
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453 } |
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454 |
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455 // Build argv[] |
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456 Array argv; |
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457 |
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458 argv.push((void *)global.params.exefile); |
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459 for (size_t i = 0; i < global.params.runargs_length; i++) |
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460 { char *a = global.params.runargs[i]; |
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461 |
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462 #if _WIN32 |
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463 // BUG: what about " appearing in the string? |
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464 if (strchr(a, ' ')) |
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465 { char *b = (char *)mem.malloc(3 + strlen(a)); |
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466 sprintf(b, "\"%s\"", a); |
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467 a = b; |
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468 } |
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469 #endif |
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470 argv.push((void *)a); |
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471 } |
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472 argv.push(NULL); |
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473 |
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474 #if _WIN32 |
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475 char *ex = FileName::name(global.params.exefile); |
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476 if (ex == global.params.exefile) |
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477 ex = FileName::combine(".", ex); |
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478 else |
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479 ex = global.params.exefile; |
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480 return spawnv(0,ex,(char **)argv.data); |
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481 #elif linux |
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482 pid_t childpid; |
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483 int status; |
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484 |
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485 childpid = fork(); |
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486 if (childpid == 0) |
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487 { |
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488 const char *fn = (const char *)argv.data[0]; |
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489 if (!FileName::absolute(fn)) |
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490 { // Make it "./fn" |
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491 fn = FileName::combine(".", fn); |
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492 } |
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493 execv(fn, (char **)argv.data); |
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494 perror(fn); // failed to execute |
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495 return -1; |
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496 } |
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497 |
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498 waitpid(childpid, &status, 0); |
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499 |
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500 status = WEXITSTATUS(status); |
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501 return status; |
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502 #else |
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503 assert(0); |
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504 #endif |
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505 } |