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annotate gen/linker.cpp @ 701:855e0ef78fa2

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Guess exe name from first object name if none specified.
author Christian Kamm <kamm incasoftware de>
date Mon, 13 Oct 2008 19:02:03 +0200
parents ca4a816f2440
children 6c850977a941
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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6aaa3d3c1183 First part of rename to LDC.
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24 llvm::Linker linker("ldc", 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.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 }
21f85bac0b1a [svn r297] Fixed: rewrote linker code to use LLVM's Program facilities instead of DMD's oldschool broken "native" approach.
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128
21f85bac0b1a [svn r297] Fixed: rewrote linker code to use LLVM's Program facilities instead of DMD's oldschool broken "native" approach.
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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
21f85bac0b1a [svn r297] Fixed: rewrote linker code to use LLVM's Program facilities instead of DMD's oldschool broken "native" approach.
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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
21f85bac0b1a [svn r297] Fixed: rewrote linker code to use LLVM's Program facilities instead of DMD's oldschool broken "native" approach.
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145
21f85bac0b1a [svn r297] Fixed: rewrote linker code to use LLVM's Program facilities instead of DMD's oldschool broken "native" approach.
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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
21f85bac0b1a [svn r297] Fixed: rewrote linker code to use LLVM's Program facilities instead of DMD's oldschool broken "native" approach.
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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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diff changeset
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.
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159 args.push_back("-lpthread");
6788e98ec1cd Do only link to libpthread, libm and libdl on Linux.
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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;
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162
29dc68c949b0 Applied the FreeBSD patch from Ralith, closes ticket #95 , slightly changed but basically the same. Thanx Ralith :)
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diff changeset
163 case OSWindows:
393
a3f3c2770a0d Added bitcode filename to very verbose logging.
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diff changeset
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 :)
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parents: 567
diff changeset
165 break;
393
a3f3c2770a0d Added bitcode filename to very verbose logging.
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diff changeset
166 }
276
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167
21f85bac0b1a [svn r297] Fixed: rewrote linker code to use LLVM's Program facilities instead of DMD's oldschool broken "native" approach.
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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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diff changeset
174
21f85bac0b1a [svn r297] Fixed: rewrote linker code to use LLVM's Program facilities instead of DMD's oldschool broken "native" approach.
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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 {
21f85bac0b1a [svn r297] Fixed: rewrote linker code to use LLVM's Program facilities instead of DMD's oldschool broken "native" approach.
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178 // Print it
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diff changeset
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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diff changeset
184
21f85bac0b1a [svn r297] Fixed: rewrote linker code to use LLVM's Program facilities instead of DMD's oldschool broken "native" approach.
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185 // terminate args list
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diff changeset
186 args.push_back(NULL);
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187
21f85bac0b1a [svn r297] Fixed: rewrote linker code to use LLVM's Program facilities instead of DMD's oldschool broken "native" approach.
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diff changeset
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 {
21f85bac0b1a [svn r297] Fixed: rewrote linker code to use LLVM's Program facilities instead of DMD's oldschool broken "native" approach.
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diff changeset
191 error("linking failed:\nstatus: %d", status);
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diff changeset
192 if (!errstr.empty())
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diff changeset
193 error("message: %s", errstr.c_str());
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diff changeset
194 fatal();
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diff changeset
195 }
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diff changeset
196 }
277
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
197
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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diff changeset
198 //////////////////////////////////////////////////////////////////////////////
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lindquist
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diff changeset
199
677
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200 int linkObjToExecutable(const char* argv0)
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201 {
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202 Logger::println("*** Linking executable ***");
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203
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204 // error string
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205 std::string errstr;
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206
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207 // find gcc for linking
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208 llvm::sys::Path gcc = llvm::sys::Program::FindProgramByName("gcc");
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209 if (gcc.isEmpty())
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210 {
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diff changeset
211 gcc.set("gcc");
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212 }
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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
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217 // first the program name ??
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218 args.push_back("gcc");
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219
681
ca4a816f2440 Another link order fix.
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220 // object files
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diff changeset
221 for (int i = 0; i < global.params.objfiles->dim; i++)
ca4a816f2440 Another link order fix.
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diff changeset
222 {
ca4a816f2440 Another link order fix.
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diff changeset
223 char *p = (char *)global.params.objfiles->data[i];
ca4a816f2440 Another link order fix.
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diff changeset
224 args.push_back(p);
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diff changeset
225 }
ca4a816f2440 Another link order fix.
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226
677
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227 // output filename
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228 std::string exestr;
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229 if (global.params.exefile)
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230 { // explicit
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231 exestr = global.params.exefile;
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232 }
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233 else
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234 { // inferred
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diff changeset
235 // try root module name
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diff changeset
236 if (Module::rootModule)
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diff changeset
237 exestr = Module::rootModule->toChars();
701
855e0ef78fa2 Guess exe name from first object name if none specified.
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parents: 681
diff changeset
238 else if (global.params.objfiles->dim)
855e0ef78fa2 Guess exe name from first object name if none specified.
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diff changeset
239 exestr = FileName::removeExt((char*)global.params.objfiles->data[0]);
677
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240 else
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diff changeset
241 exestr = "a.out";
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diff changeset
242 }
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diff changeset
243 if (global.params.os == OSWindows)
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diff changeset
244 exestr.append(".exe");
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245
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diff changeset
246 args.push_back("-o");
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diff changeset
247 args.push_back(exestr.c_str());
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248
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diff changeset
249 // set the global gExePath
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diff changeset
250 gExePath.set(exestr);
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diff changeset
251 assert(gExePath.isValid());
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252
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253 // create path to exe
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254 llvm::sys::Path exedir(gExePath);
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255 exedir.set(gExePath.getDirname());
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diff changeset
256 if (!exedir.exists())
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diff changeset
257 {
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diff changeset
258 exedir.createDirectoryOnDisk(true, &errstr);
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diff changeset
259 if (!errstr.empty())
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diff changeset
260 {
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diff changeset
261 error("failed to create path to linking output: %s\n%s", exedir.c_str(), errstr.c_str());
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262 fatal();
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263 }
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264 }
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265
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266 // additional linker switches
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267 for (int i = 0; i < global.params.linkswitches->dim; i++)
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268 {
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269 char *p = (char *)global.params.linkswitches->data[i];
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270 args.push_back(p);
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271 }
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272
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273 // user libs
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274 for (int i = 0; i < global.params.libfiles->dim; i++)
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275 {
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276 char *p = (char *)global.params.libfiles->data[i];
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277 args.push_back(p);
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278 }
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279
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280 // default libs
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281 switch(global.params.os) {
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282 case OSLinux:
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283 case OSMacOSX:
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284 args.push_back("-ldl");
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285 case OSFreeBSD:
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286 args.push_back("-lpthread");
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287 args.push_back("-lm");
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288 break;
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289
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290 case OSWindows:
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291 // FIXME: I'd assume kernel32 etc
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292 break;
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293 }
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294
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295 // print link command?
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296 if (!global.params.quiet || global.params.verbose)
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297 {
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298 // Print it
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299 for (int i = 0; i < args.size(); i++)
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300 printf("%s ", args[i]);
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301 printf("\n");
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302 fflush(stdout);
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303 }
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304
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305 Logger::println("Linking with: ");
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306 std::vector<const char*>::const_iterator I = args.begin(), E = args.end();
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307 std::ostream& logstr = Logger::cout();
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308 for (; I != E; ++I)
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309 if (*I)
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310 logstr << "'" << *I << "'" << " ";
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311 logstr << "\n" << std::flush;
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312
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313
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314 // terminate args list
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315 args.push_back(NULL);
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316
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317 // try to call linker!!!
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318 if (int status = llvm::sys::Program::ExecuteAndWait(gcc, &args[0], NULL, NULL, 0,0, &errstr))
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319 {
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320 error("linking failed:\nstatus: %d", status);
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321 if (!errstr.empty())
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322 error("message: %s", errstr.c_str());
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323 fatal();
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324 }
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325 }
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326
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327 //////////////////////////////////////////////////////////////////////////////
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328
277
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329 void deleteExecutable()
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330 {
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331 if (!gExePath.isEmpty())
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332 {
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333 assert(gExePath.isValid());
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334 assert(!gExePath.isDirectory());
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335 gExePath.eraseFromDisk(false);
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336 }
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337 }
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338
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339 //////////////////////////////////////////////////////////////////////////////
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340
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341 int runExectuable()
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342 {
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343 assert(!gExePath.isEmpty());
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344 assert(gExePath.isValid());
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345
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346 // build arguments
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347 std::vector<const char*> args;
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348 for (size_t i = 0; i < global.params.runargs_length; i++)
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349 {
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350 char *a = global.params.runargs[i];
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351 args.push_back(a);
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352 }
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353 // terminate args list
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354 args.push_back(NULL);
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355
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356 // try to call linker!!!
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357 std::string errstr;
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358 int status = llvm::sys::Program::ExecuteAndWait(gExePath, &args[0], NULL, NULL, 0,0, &errstr);
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359 if (!errstr.empty())
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360 {
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361 error("failed to execute program");
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362 if (!errstr.empty())
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363 error("error message: %s", errstr.c_str());
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364 fatal();
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365 }
278
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366 return status;
277
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367 }