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annotate gen/linker.cpp @ 468:45a67b6f1310

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Removed the 'needsstorage' thing from Dsymbol. Arguments are not always given storage when applicable. This is not longer treat specially in this regard. Code for accessing nested variables and contexts rewritten. Probably more. Fairly well tested.
author Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
date Mon, 04 Aug 2008 02:59:34 +0200
parents 723027dd9593
children 7e2867ed70d9
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 #include "gen/llvm.h"
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2 #include "llvm/Linker.h"
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3 #include "llvm/System/Program.h"
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4 #if _WIN32
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5 #include "llvm/Support/SystemUtils.h"
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6 #endif
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7
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8 #include "root.h"
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9 #include "mars.h"
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10 #include "module.h"
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11
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12 #define NO_COUT_LOGGER
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13 #include "gen/logger.h"
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14
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15 //////////////////////////////////////////////////////////////////////////////
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16
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17 typedef std::vector<llvm::Module*> Module_vector;
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18
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19 void linkModules(llvm::Module* dst, const Module_vector& MV)
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20 {
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21 if (MV.empty())
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22 return;
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23
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24 llvm::Linker linker("llvmdc", dst);
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25
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26 std::string err;
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27 for (Module_vector::const_iterator i=MV.begin(); i!=MV.end(); ++i)
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28 {
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29 if (!linker.LinkInModule(*i, &err))
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30 {
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31 error("%s", err.c_str());
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32 fatal();
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33 }
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34 }
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35 }
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36
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37 //////////////////////////////////////////////////////////////////////////////
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38
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39 static llvm::sys::Path gExePath;
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40
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41 int linkExecutable(const char* argv0)
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42 {
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43 Logger::println("*** Linking executable ***");
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44
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45 // error string
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46 std::string errstr;
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47
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48 // find the llvm-ld program
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49 llvm::sys::Path ldpath = llvm::sys::Program::FindProgramByName("llvm-ld");
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50 if (ldpath.isEmpty())
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51 {
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52 ldpath.set("llvm-ld");
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53 }
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54
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55 // build arguments
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56 std::vector<const char*> args;
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57
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58 // first the program name ??
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59 args.push_back("llvm-ld");
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60
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61 // output filename
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62 std::string exestr;
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63 if (global.params.exefile)
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64 { // explicit
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65 exestr = global.params.exefile;
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66 }
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67 else
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68 { // inferred
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69 // try root module name
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70 if (Module::rootModule)
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71 exestr = Module::rootModule->toChars();
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72 else
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73 exestr = "a.out";
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74 }
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75 if (global.params.isWindows)
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76 exestr.append(".exe");
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77
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78 std::string outopt = "-o=" + exestr;
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79 args.push_back(outopt.c_str());
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80
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81 // set the global gExePath
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82 gExePath.set(exestr);
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83 assert(gExePath.isValid());
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84
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85 // create path to exe
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86 llvm::sys::Path exedir(gExePath);
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87 exedir.set(gExePath.getDirname());
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88 if (!exedir.exists())
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89 {
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90 exedir.createDirectoryOnDisk(true, &errstr);
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91 if (!errstr.empty())
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92 {
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93 error("failed to create path to linking output: %s\n%s", exedir.c_str(), errstr.c_str());
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94 fatal();
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95 }
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96 }
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97
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98 // strip debug info
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99 if (!global.params.symdebug)
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100 args.push_back("-strip-debug");
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101
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102 // optimization level
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103 if (!global.params.optimize)
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104 args.push_back("-disable-opt");
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105 else
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106 {
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107 const char* s = 0;
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108 switch(global.params.optimizeLevel)
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109 {
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110 case 0:
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111 args.push_back("-disable-opt");
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112 args.push_back("-globaldce");
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113 break;
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114 case 1:
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115 args.push_back("-disable-opt");
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116 args.push_back("-globaldce");
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117 args.push_back("-mem2reg");
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118 case 2:
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119 case 3:
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120 case 4:
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121 case 5:
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122 // use default optimization
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123 break;
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124 default:
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125 assert(0);
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126 }
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127 }
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128
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129 // inlining
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130 if (!(global.params.useInline || global.params.llvmInline))
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131 {
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132 args.push_back("-disable-inlining");
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133 }
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134
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135 // additional linker switches
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136 for (int i = 0; i < global.params.linkswitches->dim; i++)
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137 {
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138 char *p = (char *)global.params.linkswitches->data[i];
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139 args.push_back(p);
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140 }
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141
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142 // native please
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143 args.push_back("-native");
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144
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145
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146 // user libs
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147 for (int i = 0; i < global.params.libfiles->dim; i++)
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148 {
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149 char *p = (char *)global.params.libfiles->data[i];
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150 args.push_back(p);
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151 }
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152
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153 // default libs
376
6788e98ec1cd Do only link to libpthread, libm and libdl on Linux.
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154 if(global.params.isLinux)
6788e98ec1cd Do only link to libpthread, libm and libdl on Linux.
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155 {
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156 args.push_back("-lpthread");
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157 args.push_back("-ldl");
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158 args.push_back("-lm");
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159 }
393
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160 else if (global.params.isWindows)
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161 {
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162 // FIXME: I'd assume kernel32 etc
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163 }
276
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164
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165 // object files
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166 for (int i = 0; i < global.params.objfiles->dim; i++)
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167 {
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168 char *p = (char *)global.params.objfiles->data[i];
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169 args.push_back(p);
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170 }
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171
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172 // runtime library
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173 // must be linked in last to null terminate the moduleinfo appending list
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174 std::string runtime_path(global.params.runtimePath);
407
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175
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176 // path seperator can be \ on windows, but we check for /
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177 if (global.params.isWindows)
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178 {
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179 int i=0;
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180 while ((i = runtime_path.find("\\", i)) > 0)
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181 runtime_path.replace(i, 1, "/");
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182 }
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183
276
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184 if (*runtime_path.rbegin() != '/')
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185 runtime_path.append("/");
325
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186 runtime_path.append("libtango-base-llvmdc-native.a");
276
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187 args.push_back(runtime_path.c_str());
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188
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189 // print link command?
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190 if (!global.params.quiet || global.params.verbose)
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191 {
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192 // Print it
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193 for (int i = 0; i < args.size(); i++)
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194 printf("%s ", args[i]);
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195 printf("\n");
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196 fflush(stdout);
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197 }
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198
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199 // terminate args list
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200 args.push_back(NULL);
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201
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202 // try to call linker!!!
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203 if (int status = llvm::sys::Program::ExecuteAndWait(ldpath, &args[0], NULL, NULL, 0,0, &errstr))
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204 {
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205 error("linking failed:\nstatus: %d", status);
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206 if (!errstr.empty())
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207 error("message: %s", errstr.c_str());
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208 fatal();
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209 }
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210 }
277
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211
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212 //////////////////////////////////////////////////////////////////////////////
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213
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214 void deleteExecutable()
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215 {
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216 if (!gExePath.isEmpty())
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diff changeset
217 {
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218 assert(gExePath.isValid());
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219 assert(!gExePath.isDirectory());
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220 gExePath.eraseFromDisk(false);
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221 }
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222 }
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223
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224 //////////////////////////////////////////////////////////////////////////////
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225
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226 int runExectuable()
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227 {
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diff changeset
228 assert(!gExePath.isEmpty());
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229 assert(gExePath.isValid());
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230
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231 // build arguments
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232 std::vector<const char*> args;
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233 for (size_t i = 0; i < global.params.runargs_length; i++)
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diff changeset
234 {
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diff changeset
235 char *a = global.params.runargs[i];
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236 args.push_back(a);
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diff changeset
237 }
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238 // terminate args list
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diff changeset
239 args.push_back(NULL);
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diff changeset
240
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241 // try to call linker!!!
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242 std::string errstr;
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243 int status = llvm::sys::Program::ExecuteAndWait(gExePath, &args[0], NULL, NULL, 0,0, &errstr);
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diff changeset
244 if (!errstr.empty())
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diff changeset
245 {
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diff changeset
246 error("failed to execute program");
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diff changeset
247 if (!errstr.empty())
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248 error("error message: %s", errstr.c_str());
90a8c798b0db [svn r298] Eliminated the dmd/link.c source file entirely in favor of a llvm::sys based approach to the same functionality.
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249 fatal();
90a8c798b0db [svn r298] Eliminated the dmd/link.c source file entirely in favor of a llvm::sys based approach to the same functionality.
lindquist
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diff changeset
250 }
278
30941d8ee320 [svn r299] forgot to return status in runExecutable
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251 return status;
277
90a8c798b0db [svn r298] Eliminated the dmd/link.c source file entirely in favor of a llvm::sys based approach to the same functionality.
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252 }