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annotate gen/linker.cpp @ 325:3c8c58c24aa8 trunk

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[svn r346] Fixed #55 - llvmdc can link as fast as dmd now! Made runtime to compile to native by default. Changed linker.cpp to link in native runtime library. This change requires a runtime rebuild as well as a new symbolic link in lib/ to tango/lib/libtango-base-llvmdc-native.a.
author ChristianK
date Thu, 10 Jul 2008 19:38:34 +0200
parents 0baca2feb554
children 6788e98ec1cd
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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 s = "-O0"; break;
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112 case 1:
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113 s = "-O1"; break;
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114 case 2:
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115 s = "-O2"; break;
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116 case 3:
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117 s = "-O3"; break;
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118 case 4:
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119 s = "-O4"; break;
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120 case 5:
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121 s = "-O5"; break;
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122 default:
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123 assert(0);
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124 }
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125 args.push_back(s);
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126 }
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127
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128 // inlining
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129 if (!(global.params.useInline || global.params.llvmInline))
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130 {
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131 args.push_back("-disable-inlining");
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132 }
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133
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134 // additional linker switches
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135 for (int i = 0; i < global.params.linkswitches->dim; i++)
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136 {
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137 char *p = (char *)global.params.linkswitches->data[i];
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138 args.push_back(p);
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139 }
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140
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141 // native please
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142 args.push_back("-native");
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143
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144
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145 // user libs
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146 for (int i = 0; i < global.params.libfiles->dim; i++)
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147 {
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148 char *p = (char *)global.params.libfiles->data[i];
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149 args.push_back(p);
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150 }
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151
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152 // default libs
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153 args.push_back("-lpthread");
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154 args.push_back("-ldl");
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155 args.push_back("-lm");
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156
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157 // object files
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158 for (int i = 0; i < global.params.objfiles->dim; i++)
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159 {
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160 char *p = (char *)global.params.objfiles->data[i];
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161 args.push_back(p);
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162 }
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163
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164 // runtime library
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165 // must be linked in last to null terminate the moduleinfo appending list
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166 std::string runtime_path(global.params.runtimePath);
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167 if (*runtime_path.rbegin() != '/')
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168 runtime_path.append("/");
325
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169 runtime_path.append("libtango-base-llvmdc-native.a");
276
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170 args.push_back(runtime_path.c_str());
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171
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172 // print link command?
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173 if (!global.params.quiet || global.params.verbose)
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174 {
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175 // Print it
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176 for (int i = 0; i < args.size(); i++)
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177 printf("%s ", args[i]);
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178 printf("\n");
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179 fflush(stdout);
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180 }
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181
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182 // terminate args list
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183 args.push_back(NULL);
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184
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185 // try to call linker!!!
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186 if (int status = llvm::sys::Program::ExecuteAndWait(ldpath, &args[0], NULL, NULL, 0,0, &errstr))
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187 {
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188 error("linking failed:\nstatus: %d", status);
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189 if (!errstr.empty())
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190 error("message: %s", errstr.c_str());
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191 fatal();
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192 }
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193 }
277
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194
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195 //////////////////////////////////////////////////////////////////////////////
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196
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197 void deleteExecutable()
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198 {
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199 if (!gExePath.isEmpty())
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200 {
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201 assert(gExePath.isValid());
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202 assert(!gExePath.isDirectory());
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203 gExePath.eraseFromDisk(false);
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204 }
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205 }
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206
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207 //////////////////////////////////////////////////////////////////////////////
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208
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209 int runExectuable()
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210 {
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211 assert(!gExePath.isEmpty());
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212 assert(gExePath.isValid());
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213
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214 // build arguments
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215 std::vector<const char*> args;
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216 for (size_t i = 0; i < global.params.runargs_length; i++)
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217 {
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218 char *a = global.params.runargs[i];
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219 args.push_back(a);
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220 }
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221 // terminate args list
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222 args.push_back(NULL);
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223
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224 // try to call linker!!!
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225 std::string errstr;
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226 int status = llvm::sys::Program::ExecuteAndWait(gExePath, &args[0], NULL, NULL, 0,0, &errstr);
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227 if (!errstr.empty())
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228 {
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229 error("failed to execute program");
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230 if (!errstr.empty())
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231 error("error message: %s", errstr.c_str());
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232 fatal();
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233 }
278
30941d8ee320 [svn r299] forgot to return status in runExecutable
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234 return status;
277
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235 }