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annotate gen/linker.cpp @ 650:aa6a0b7968f7

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Added test case for bug #100 Removed dubious check for not emitting static private global in other modules without access. This should be handled properly somewhere else, it's causing unresolved global errors for stuff that should work (in MiniD)
author Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
date Sun, 05 Oct 2008 17:28:15 +0200
parents 29dc68c949b0
children 6aaa3d3c1183
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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7e2867ed70d9 Get rid of isLinux and isWindows in favor of global.params.os.
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75 if (global.params.os == OSWindows)
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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
637
29dc68c949b0 Applied the FreeBSD patch from Ralith, closes ticket #95 , slightly changed but basically the same. Thanx Ralith :)
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154 switch(global.params.os) {
29dc68c949b0 Applied the FreeBSD patch from Ralith, closes ticket #95 , slightly changed but basically the same. Thanx Ralith :)
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155 case OSLinux:
29dc68c949b0 Applied the FreeBSD patch from Ralith, closes ticket #95 , slightly changed but basically the same. Thanx Ralith :)
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diff changeset
156 case OSMacOSX:
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157 args.push_back("-ldl");
29dc68c949b0 Applied the FreeBSD patch from Ralith, closes ticket #95 , slightly changed but basically the same. Thanx Ralith :)
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diff changeset
158 case OSFreeBSD:
376
6788e98ec1cd Do only link to libpthread, libm and libdl on Linux.
Christian Kamm <kamm incasoftware de>
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159 args.push_back("-lpthread");
6788e98ec1cd Do only link to libpthread, libm and libdl on Linux.
Christian Kamm <kamm incasoftware de>
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160 args.push_back("-lm");
637
29dc68c949b0 Applied the FreeBSD patch from Ralith, closes ticket #95 , slightly changed but basically the same. Thanx Ralith :)
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diff changeset
161 break;
29dc68c949b0 Applied the FreeBSD patch from Ralith, closes ticket #95 , slightly changed but basically the same. Thanx Ralith :)
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162
29dc68c949b0 Applied the FreeBSD patch from Ralith, closes ticket #95 , slightly changed but basically the same. Thanx Ralith :)
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents: 567
diff changeset
163 case OSWindows:
393
a3f3c2770a0d Added bitcode filename to very verbose logging.
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164 // FIXME: I'd assume kernel32 etc
637
29dc68c949b0 Applied the FreeBSD patch from Ralith, closes ticket #95 , slightly changed but basically the same. Thanx Ralith :)
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff changeset
165 break;
393
a3f3c2770a0d Added bitcode filename to very verbose logging.
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166 }
276
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167
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168 // object files
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169 for (int i = 0; i < global.params.objfiles->dim; i++)
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170 {
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171 char *p = (char *)global.params.objfiles->data[i];
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172 args.push_back(p);
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173 }
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174
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175 // print link command?
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176 if (!global.params.quiet || global.params.verbose)
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177 {
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178 // Print it
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179 for (int i = 0; i < args.size(); i++)
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180 printf("%s ", args[i]);
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181 printf("\n");
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182 fflush(stdout);
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183 }
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184
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185 // terminate args list
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186 args.push_back(NULL);
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187
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188 // try to call linker!!!
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189 if (int status = llvm::sys::Program::ExecuteAndWait(ldpath, &args[0], NULL, NULL, 0,0, &errstr))
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190 {
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191 error("linking failed:\nstatus: %d", status);
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192 if (!errstr.empty())
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193 error("message: %s", errstr.c_str());
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194 fatal();
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195 }
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196 }
277
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197
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198 //////////////////////////////////////////////////////////////////////////////
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199
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200 void deleteExecutable()
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201 {
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202 if (!gExePath.isEmpty())
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203 {
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204 assert(gExePath.isValid());
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205 assert(!gExePath.isDirectory());
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206 gExePath.eraseFromDisk(false);
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207 }
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208 }
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209
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210 //////////////////////////////////////////////////////////////////////////////
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211
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212 int runExectuable()
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213 {
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214 assert(!gExePath.isEmpty());
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215 assert(gExePath.isValid());
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216
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217 // build arguments
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218 std::vector<const char*> args;
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219 for (size_t i = 0; i < global.params.runargs_length; i++)
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220 {
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221 char *a = global.params.runargs[i];
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222 args.push_back(a);
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223 }
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224 // terminate args list
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225 args.push_back(NULL);
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226
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227 // try to call linker!!!
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228 std::string errstr;
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229 int status = llvm::sys::Program::ExecuteAndWait(gExePath, &args[0], NULL, NULL, 0,0, &errstr);
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230 if (!errstr.empty())
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231 {
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232 error("failed to execute program");
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233 if (!errstr.empty())
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234 error("error message: %s", errstr.c_str());
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235 fatal();
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236 }
278
30941d8ee320 [svn r299] forgot to return status in runExecutable
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237 return status;
277
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238 }