1 | // |
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2 | // Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo |
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3 | // |
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4 | // The contents of this file are covered under the licence agreement in the |
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5 | // file "LICENCE" distributed with Cforall. |
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6 | // |
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7 | // cfa.cc -- |
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8 | // |
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9 | // Author : Peter A. Buhr |
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10 | // Created On : Tue Aug 20 13:44:49 2002 |
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11 | // Last Modified By : Peter A. Buhr |
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12 | // Last Modified On : Sun Aug 16 23:05:59 2020 |
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13 | // Update Count : 447 |
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14 | // |
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15 | |
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16 | #include <iostream> |
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17 | #include <cstdio> // perror |
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18 | #include <cstdlib> // putenv, exit |
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19 | #include <climits> // PATH_MAX |
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20 | #include <string> // STL version |
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21 | #include <algorithm> // find |
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22 | |
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23 | #include <unistd.h> // execvp |
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24 | #include <sys/types.h> |
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25 | #include <sys/stat.h> |
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26 | |
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27 | #include "Common/SemanticError.h" |
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28 | #include "config.h" // configure info |
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29 | |
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30 | using std::cerr; |
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31 | using std::endl; |
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32 | using std::string; |
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33 | using std::to_string; |
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34 | |
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35 | //#define __DEBUG_H__ |
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36 | |
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37 | #define xstr(s) str(s) |
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38 | #define str(s) #s |
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39 | |
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40 | static string __CFA_FLAGPREFIX__( "__CFA_FLAG" ); // "__CFA_FLAG__=" suffix |
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41 | |
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42 | static void Putenv( char * argv[], string arg ) { |
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43 | // environment variables must have unique names |
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44 | static int flags = 0; |
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45 | |
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46 | if ( putenv( (char *)( *new string( string( __CFA_FLAGPREFIX__ + to_string( flags++ ) + "__=" ) + arg ) ).c_str() ) ) { |
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47 | cerr << argv[0] << " error, cannot set environment variable." << endl; |
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48 | exit( EXIT_FAILURE ); |
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49 | } // if |
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50 | } // Putenv |
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51 | |
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52 | static bool prefix( const string & arg, const string & pre ) { // check if string has prefix |
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53 | return arg.substr( 0, pre.size() ) == pre; |
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54 | } // prefix |
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55 | |
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56 | static inline bool ends_with(const string & str, const string & sfix) { |
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57 | if (sfix.size() > str.size()) return false; |
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58 | return std::equal(str.rbegin(), str.rbegin() + sfix.size(), sfix.rbegin(), sfix.rend()); |
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59 | } |
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60 | |
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61 | // check if string has suffix |
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62 | static bool suffix( const string & arg ) { |
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63 | enum { NumSuffixes = 3 }; |
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64 | static const string suffixes[NumSuffixes] = { "cfa", "hfa", "ifa" }; |
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65 | |
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66 | size_t dot = arg.find_last_of( "." ); |
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67 | if ( dot == string::npos ) return false; |
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68 | const string * end = suffixes + NumSuffixes; |
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69 | return std::find( suffixes, end, arg.substr( dot + 1 ) ) != end; |
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70 | } // suffix |
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71 | |
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72 | static inline bool dirExists( const string & path ) { // check if directory exists |
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73 | struct stat info; |
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74 | if ( stat( path.c_str(), &info ) != 0 ) return false; |
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75 | return (info.st_mode & S_IFDIR) != 0; |
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76 | } // dirExists |
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77 | |
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78 | static inline string dir(const string & path) { |
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79 | return path.substr(0, path.find_last_of('/')); |
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80 | } // dir |
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81 | |
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82 | // Different path modes |
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83 | enum PathMode { |
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84 | Installed, // cfa is installed, use prefix |
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85 | BuildTree, // cfa is in the tree, use source and build tree |
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86 | Distributed // cfa is distributed, use build tree for includes and executable directory for .cfs |
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87 | }; |
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88 | |
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89 | // Get path mode from /proc |
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90 | PathMode FromProc() { |
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91 | std::string abspath; |
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92 | abspath.resize(PATH_MAX); |
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93 | |
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94 | // get executable path from /proc/self/exe |
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95 | ssize_t size = readlink("/proc/self/exe", const_cast<char*>(abspath.c_str()), abspath.size()); |
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96 | if(size <= 0) { |
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97 | std::cerr << "Error could not evaluate absolute path from /proc/self/exe" << std::endl; |
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98 | std::cerr << "Failed with " << std::strerror(errno) << std::endl; |
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99 | std::exit(1); |
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100 | } |
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101 | |
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102 | // Trim extra characters |
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103 | abspath.resize(size); |
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104 | |
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105 | // Are we installed |
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106 | if(abspath.rfind(CFA_BINDIR , 0) == 0) { return Installed; } |
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107 | |
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108 | // Is this the build tree |
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109 | if(abspath.rfind(TOP_BUILDDIR, 0) == 0) { return BuildTree; } |
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110 | |
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111 | // Does this look like distcc |
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112 | if(abspath.find("/.cfadistcc/") != std::string::npos) { return Distributed; } |
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113 | |
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114 | // None of the above? Give up since we don't know where the prelude or include directories are |
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115 | std::cerr << "Cannot find required files from excutable path " << abspath << std::endl; |
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116 | std::exit(1); |
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117 | } |
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118 | |
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119 | |
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120 | int main( int argc, char * argv[] ) { |
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121 | string Version( CFA_VERSION_LONG ); // current version number from CONFIG |
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122 | string Major( xstr( CFA_VERSION_MAJOR ) ), Minor( xstr( CFA_VERSION_MINOR ) ), Patch( xstr( CFA_VERSION_PATCH ) ); |
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123 | |
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124 | string installincdir( CFA_INCDIR ); // fixed location of include files |
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125 | string installlibdir( CFA_LIBDIR ); // fixed location of cc1 and cfa-cpp commands when installed |
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126 | string srcdriverdir ( TOP_BUILDDIR "driver"); // fixed location of cc1 and cfa-cpp commands when in tree |
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127 | |
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128 | string heading; // banner printed at start of cfa compilation |
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129 | string arg; // current command-line argument during command-line parsing |
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130 | string bprefix; // path where gcc looks for compiler steps |
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131 | string langstd; // language standard |
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132 | |
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133 | string compiler_path( CFA_BACKEND_CC ); // path/name of C compiler |
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134 | string compiler_name; // name of C compiler |
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135 | |
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136 | bool x_flag = false; // -x flag |
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137 | bool nonoptarg = false; // no non-option arguments specified, i.e., no file names |
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138 | bool link = true; // link stage occurring |
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139 | bool verbose = false; // -v flag |
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140 | bool quiet = false; // -quiet flag |
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141 | bool debug = true; // -debug flag |
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142 | bool nolib = false; // -nolib flag |
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143 | bool help = false; // -help flag |
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144 | bool CFA_flag = false; // -CFA flag |
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145 | bool cpp_flag = false; // -E or -M flag, preprocessor only |
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146 | bool std_flag = false; // -std= flag |
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147 | bool noincstd_flag = false; // -no-include-stdhdr= flag |
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148 | bool debugging __attribute(( unused )) = false; // -g flag |
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149 | bool m32 = false; // -m32 flag |
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150 | bool m64 = false; // -m64 flag |
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151 | bool compiling_libs = false; |
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152 | int o_file = 0; // -o filename position |
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153 | |
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154 | PathMode path = FromProc(); |
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155 | |
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156 | const char * args[argc + 100]; // cfa command line values, plus some space for additional flags |
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157 | int sargs = 1; // starting location for arguments in args list |
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158 | int nargs = sargs; // number of arguments in args list; 0 => command name |
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159 | |
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160 | const char * libs[argc + 20]; // non-user libraries must come separately, plus some added libraries and flags |
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161 | int nlibs = 0; |
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162 | |
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163 | #ifdef __DEBUG_H__ |
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164 | cerr << "CFA:" << endl; |
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165 | for ( int i = 1; i < argc; i += 1 ) { |
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166 | cerr << "argv[" << i << "]:\"" << argv[i] << "\"" << endl; |
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167 | } // for |
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168 | #endif // __DEBUG_H__ |
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169 | |
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170 | // process command-line arguments |
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171 | |
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172 | for ( int i = 1; i < argc; i += 1 ) { |
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173 | arg = argv[i]; // convert to string value |
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174 | if ( prefix( arg, "-" ) ) { |
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175 | // pass through arguments |
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176 | |
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177 | if ( arg == "-Xlinker" || arg == "-o" ) { |
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178 | args[nargs++] = argv[i]; // pass flag along |
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179 | i += 1; |
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180 | if ( i == argc ) continue; // next argument available ? |
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181 | args[nargs++] = argv[i]; // pass argument along |
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182 | if ( arg == "-o" ) o_file = i; // remember file |
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183 | |
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184 | // CFA specific arguments |
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185 | |
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186 | } else if ( strncmp(arg.c_str(), "-XCFA", 5) == 0 ) { // CFA pass through |
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187 | if ( arg.size() == 5 ) { |
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188 | i += 1; |
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189 | if ( i == argc ) continue; // next argument available ? |
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190 | Putenv( argv, argv[i] ); |
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191 | } else if ( arg[5] == ',' ) { // CFA specific arguments |
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192 | Putenv( argv, argv[i] + 6 ); |
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193 | } else { // CFA specific arguments |
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194 | args[nargs++] = argv[i]; |
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195 | } // if |
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196 | } else if ( arg == "-CFA" ) { |
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197 | CFA_flag = true; // strip the -CFA flag |
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198 | link = false; |
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199 | args[nargs++] = "-fsyntax-only"; // stop after stage 2 |
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200 | } else if ( arg == "-debug" ) { |
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201 | debug = true; // strip the debug flag |
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202 | } else if ( arg == "-nodebug" ) { |
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203 | debug = false; // strip the nodebug flag |
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204 | } else if ( arg == "-quiet" ) { |
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205 | quiet = true; // strip the quiet flag |
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206 | } else if ( arg == "-noquiet" ) { |
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207 | quiet = false; // strip the noquiet flag |
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208 | } else if ( arg == "-no-include-stdhdr" ) { |
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209 | noincstd_flag = true; // strip the no-include-stdhdr flag |
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210 | } else if ( arg == "-nolib" ) { |
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211 | nolib = true; // strip the nolib flag |
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212 | } else if ( arg == "-help" ) { |
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213 | help = true; // strip the help flag |
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214 | } else if ( arg == "-nohelp" ) { |
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215 | help = false; // strip the nohelp flag |
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216 | } else if ( arg == "-cfalib") { |
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217 | compiling_libs = true; |
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218 | } else if ( arg == "-compiler" ) { |
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219 | // use the user specified compiler |
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220 | i += 1; |
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221 | if ( i == argc ) continue; // next argument available ? |
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222 | compiler_path = argv[i]; |
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223 | Putenv( argv, arg + "=" + argv[i] ); |
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224 | |
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225 | // C specific arguments |
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226 | |
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227 | } else if ( arg == "-v" ) { |
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228 | verbose = true; // verbosity required |
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229 | args[nargs++] = argv[i]; // pass flag along |
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230 | } else if ( arg == "-g" ) { |
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231 | debugging = true; // symbolic debugging required |
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232 | args[nargs++] = argv[i]; // pass flag along |
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233 | } else if ( arg == "-save-temps" ) { |
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234 | args[nargs++] = argv[i]; // pass flag along |
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235 | Putenv( argv, arg ); // save cfa-cpp output |
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236 | } else if ( prefix( arg, "-x" ) ) { // file suffix ? |
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237 | string lang; |
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238 | args[nargs++] = argv[i]; // pass flag along |
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239 | if ( arg.length() == 2 ) { // separate argument ? |
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240 | i += 1; |
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241 | if ( i == argc ) continue; // next argument available ? |
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242 | lang = argv[i]; |
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243 | args[nargs++] = argv[i]; // pass argument along |
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244 | } else { |
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245 | lang = arg.substr( 2 ); |
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246 | } // if |
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247 | if ( x_flag ) { |
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248 | cerr << argv[0] << " warning, only one -x flag per compile, ignoring subsequent flag." << endl; |
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249 | } else { |
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250 | x_flag = true; |
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251 | Putenv( argv, string( "-x=" ) + lang ); |
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252 | } // if |
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253 | } else if ( prefix( arg, "-std=" ) || prefix( arg, "--std=" ) ) { |
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254 | std_flag = true; // -std=XX provided |
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255 | args[nargs++] = argv[i]; // pass flag along |
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256 | } else if ( arg == "-w" ) { |
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257 | args[nargs++] = argv[i]; // pass flag along |
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258 | Putenv( argv, arg ); |
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259 | } else if ( prefix( arg, "-W" ) ) { // check before next tests |
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260 | if ( arg == "-Werror" || arg == "-Wall" ) { |
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261 | args[nargs++] = argv[i]; // pass flag along |
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262 | Putenv( argv, argv[i] ); |
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263 | } else { |
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264 | unsigned int adv = prefix( arg, "-Wno-" ) ? 5 : 2; |
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265 | args[nargs] = argv[i]; // conditionally pass argument along |
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266 | const char * warning = argv[i] + adv; // extract warning |
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267 | if ( SemanticWarning_Exist( warning ) ) { // replace the argument for cfa-cpp |
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268 | Putenv( argv, arg ); |
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269 | } // if |
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270 | nargs += 1; |
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271 | } // if |
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272 | } else if ( prefix( arg, "-B" ) ) { |
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273 | bprefix = arg.substr(2); // strip the -B flag |
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274 | } else if ( arg == "-c" || arg == "-S" || arg == "-E" || arg == "-M" || arg == "-MM" ) { |
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275 | args[nargs++] = argv[i]; // pass flag along |
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276 | if ( arg == "-E" || arg == "-M" || arg == "-MM" ) { |
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277 | cpp_flag = true; // cpp only |
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278 | } // if |
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279 | link = false; // no linkage required |
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280 | } else if ( arg == "-D" || arg == "-U" || arg == "-I" || arg == "-MF" || arg == "-MT" || arg == "-MQ" || |
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281 | arg == "-include" || arg == "-imacros" || arg == "-idirafter" || arg == "-iprefix" || |
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282 | arg == "-iwithprefix" || arg == "-iwithprefixbefore" || arg == "-isystem" || arg == "-isysroot" ) { |
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283 | args[nargs++] = argv[i]; // pass flag along |
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284 | i += 1; |
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285 | args[nargs++] = argv[i]; // pass argument along |
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286 | } else if ( arg[1] == 'l' ) { |
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287 | // if the user specifies a library, load it after user code |
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288 | libs[nlibs++] = argv[i]; |
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289 | } else if ( arg == "-m32" ) { |
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290 | m32 = true; |
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291 | m64 = false; |
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292 | args[nargs++] = argv[i]; |
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293 | } else if ( arg == "-m64" ) { |
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294 | m64 = true; |
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295 | m32 = false; |
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296 | args[nargs++] = argv[i]; |
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297 | } else { |
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298 | // concatenate any other arguments |
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299 | args[nargs++] = argv[i]; |
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300 | } // if |
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301 | } else { |
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302 | bool cfa = suffix( arg ); // check suffix |
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303 | if ( ! x_flag && cfa ) { // no explicit suffix and cfa suffix ? |
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304 | args[nargs++] = "-x"; |
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305 | args[nargs++] = "c"; |
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306 | } // if |
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307 | args[nargs++] = argv[i]; // concatenate files |
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308 | if ( ! x_flag && cfa ) { // no explicit suffix and cfa suffix ? |
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309 | args[nargs++] = "-x"; |
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310 | args[nargs++] = "none"; |
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311 | } // if |
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312 | nonoptarg = true; |
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313 | } // if |
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314 | } // for |
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315 | |
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316 | #ifdef __x86_64__ |
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317 | args[nargs++] = "-mcx16"; // allow double-wide CAS |
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318 | #endif // __x86_64__ |
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319 | |
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320 | #ifdef __DEBUG_H__ |
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321 | cerr << "args:"; |
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322 | for ( int i = 1; i < nargs; i += 1 ) { |
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323 | cerr << " " << args[i]; |
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324 | } // for |
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325 | cerr << endl; |
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326 | #endif // __DEBUG_H__ |
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327 | |
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328 | // -E flag stops at cc1 stage 1, so cfa-cpp in cc1 stage 2 is never executed. |
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329 | if ( cpp_flag && CFA_flag ) { |
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330 | CFA_flag = false; |
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331 | cerr << argv[0] << " warning, both -E and -CFA flags specified, using -E and ignoring -CFA." << endl; |
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332 | } // if |
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333 | |
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334 | // add the CFA include-library paths, which allow direct access to header files without directory qualification |
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335 | string libbase; |
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336 | switch(path) { |
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337 | case Installed: |
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338 | args[nargs++] = "-I" CFA_INCDIR; |
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339 | // do not use during build |
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340 | if ( ! noincstd_flag ) { |
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341 | args[nargs++] = "-I" CFA_INCDIR "stdhdr"; |
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342 | } // if |
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343 | args[nargs++] = "-I" CFA_INCDIR "concurrency"; |
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344 | args[nargs++] = "-I" CFA_INCDIR "containers"; |
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345 | libbase = CFA_LIBDIR; |
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346 | break; |
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347 | case BuildTree: |
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348 | case Distributed: |
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349 | args[nargs++] = "-I" TOP_SRCDIR "libcfa/src"; |
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350 | // do not use during build |
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351 | if ( ! noincstd_flag ) { |
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352 | args[nargs++] = "-I" TOP_SRCDIR "libcfa/src" "/stdhdr"; |
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353 | } // if |
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354 | args[nargs++] = "-I" TOP_SRCDIR "libcfa/src" "/concurrency"; |
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355 | args[nargs++] = "-I" TOP_SRCDIR "libcfa/src" "/containers"; |
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356 | |
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357 | libbase = TOP_BUILDDIR "libcfa/"; |
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358 | |
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359 | break; |
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360 | } // if |
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361 | |
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362 | // add stdbool to get defines for bool/true/false |
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363 | args[nargs++] = "-imacros"; |
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364 | args[nargs++] = "stdbool.h"; |
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365 | |
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366 | if( compiling_libs ) { |
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367 | Putenv( argv, "-t" ); |
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368 | } // if |
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369 | |
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370 | string arch( m32 ? CFA_32_CPU : (m64 ? CFA_64_CPU : CFA_DEFAULT_CPU) ); |
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371 | if ( ! m32 && ! m64 ) { |
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372 | if ( arch == "x86" ) { |
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373 | args[nargs++] = "-m32"; |
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374 | } else if ( arch == "x64" ) { |
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375 | args[nargs++] = "-m64"; |
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376 | } // if |
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377 | } // if |
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378 | |
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379 | const char * config = nolib ? "nolib" : (debug ? "debug": "nodebug"); |
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380 | string libdir = libbase + arch + "-" + config; |
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381 | |
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382 | if ( path != Distributed ) { |
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383 | if ( ! nolib && ! dirExists( libdir ) ) { |
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384 | cerr << argv[0] << " internal error, configuration " << config << " not installed." << endl; |
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385 | cerr << "Was looking for " << libdir << endl; |
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386 | for(int i = 1; i < argc; i++) { |
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387 | cerr << argv[i] << " "; |
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388 | } |
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389 | cerr << endl; |
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390 | libdir = libbase + arch + "-" + "nolib"; |
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391 | } // if |
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392 | |
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393 | if ( ! dirExists( libdir ) ) { |
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394 | cerr << argv[0] << " internal error, cannot find prelude directory." << endl; |
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395 | cerr << "Was looking for " << libdir << endl; |
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396 | exit( EXIT_FAILURE ); |
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397 | } // if |
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398 | } // if |
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399 | |
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400 | string preludedir; |
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401 | switch(path) { |
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402 | case Installed : preludedir = libdir; break; |
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403 | case BuildTree : preludedir = libdir + "/prelude"; break; |
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404 | case Distributed : preludedir = dir(argv[0]); break; |
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405 | } // switch |
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406 | |
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407 | Putenv( argv, "--prelude-dir=" + preludedir ); |
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408 | args[nargs++] = "-include"; |
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409 | args[nargs++] = (*new string(preludedir + "/defines.hfa")).c_str(); |
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410 | |
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411 | for ( int i = 0; i < nlibs; i += 1 ) { // copy non-user libraries after all user libraries |
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412 | args[nargs++] = libs[i]; |
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413 | } // for |
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414 | |
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415 | if ( link ) { |
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416 | args[nargs++] = "-Xlinker"; |
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417 | args[nargs++] = "--undefined=__cfaabi_dbg_bits_write"; |
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418 | args[nargs++] = "-Xlinker"; |
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419 | args[nargs++] = "--undefined=__cfaabi_interpose_startup"; |
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420 | args[nargs++] = "-Xlinker"; |
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421 | args[nargs++] = "--undefined=__cfaabi_appready_startup"; |
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422 | args[nargs++] = "-z"; |
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423 | args[nargs++] = "execstack"; |
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424 | |
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425 | // include the cfa library in case it is needed |
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426 | args[nargs++] = ( *new string( string("-L" ) + libdir + (path != Installed ? "/src/.libs" : "")) ).c_str(); |
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427 | args[nargs++] = ( *new string( string("-Wl,-rpath," ) + libdir + (path != Installed ? "/src/.libs" : "")) ).c_str(); |
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428 | args[nargs++] = "-Wl,--push-state,--as-needed"; |
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429 | args[nargs++] = "-lcfathread"; |
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430 | args[nargs++] = "-Wl,--pop-state"; |
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431 | args[nargs++] = "-Wl,--push-state,--no-as-needed"; |
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432 | args[nargs++] = "-lcfa"; |
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433 | args[nargs++] = "-Wl,--pop-state"; |
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434 | args[nargs++] = "-pthread"; |
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435 | #ifdef __x86_64__ |
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436 | args[nargs++] = "-latomic"; // allow double-wide CAS |
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437 | #endif // __x86_64__ |
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438 | args[nargs++] = "-ldl"; |
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439 | args[nargs++] = "-lrt"; |
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440 | args[nargs++] = "-lm"; |
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441 | } // if |
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442 | |
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443 | args[nargs++] = "-fexceptions"; // add exception flags (unconditionally) |
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444 | |
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445 | // add flags based on the type of compile |
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446 | |
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447 | args[nargs++] = ( *new string( string("-D__CFA_MAJOR__=") + Major ) ).c_str(); |
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448 | args[nargs++] = ( *new string( string("-D__CFA_MINOR__=") + Minor ) ).c_str(); |
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449 | args[nargs++] = ( *new string( string("-D__CFA_PATCH__=") + Patch ) ).c_str(); |
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450 | args[nargs++] = "-D__CFA__"; |
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451 | args[nargs++] = "-D__CFORALL__"; |
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452 | args[nargs++] = "-D__cforall"; |
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453 | |
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454 | if ( cpp_flag ) { |
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455 | args[nargs++] = "-D__CPP__"; |
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456 | } // if |
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457 | |
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458 | if ( CFA_flag ) { |
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459 | Putenv( argv, "-N" ); |
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460 | Putenv( argv, "-CFA" ); |
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461 | // -CFA implies cc1 stage 2, but gcc does not pass the -o file to this stage because it believe the file is for |
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462 | // the linker. Hence, the -o file is explicit passed to cc1 stage 2 and used as cfa-cpp's output file. |
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463 | if ( o_file ) Putenv( argv, string( "-o=" ) + argv[o_file] ); |
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464 | } else { |
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465 | Putenv( argv, "-L" ); |
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466 | } // if |
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467 | |
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468 | if ( debug ) { |
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469 | heading += " (debug)"; |
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470 | args[nargs++] = "-D__CFA_DEBUG__"; |
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471 | } else { |
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472 | heading += " (no debug)"; |
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473 | } // if |
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474 | |
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475 | if ( bprefix.length() == 0 ) { |
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476 | switch(path) { |
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477 | case Installed : bprefix = installlibdir; break; |
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478 | case BuildTree : bprefix = srcdriverdir ; break; |
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479 | case Distributed : bprefix = dir(argv[0]) ; break; |
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480 | } // switch |
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481 | } // if |
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482 | if ( bprefix[bprefix.length() - 1] != '/' ) bprefix += '/'; |
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483 | Putenv( argv, string("-B=") + bprefix ); |
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484 | |
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485 | args[nargs++] = "-Xlinker"; // used by backtrace |
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486 | args[nargs++] = "-export-dynamic"; |
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487 | |
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488 | // execute the compilation command |
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489 | |
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490 | args[0] = compiler_path.c_str(); // set compiler command for exec |
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491 | // find actual name of the compiler independent of the path to it |
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492 | int p = compiler_path.find_last_of( '/' ); // scan r -> l for first '/' |
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493 | if ( p == -1 ) { |
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494 | compiler_name = compiler_path; |
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495 | } else { |
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496 | compiler_name = *new string( compiler_path.substr( p + 1 ) ); |
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497 | } // if |
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498 | |
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499 | if ( prefix( compiler_name, "gcc" ) ) { // allow suffix on gcc name |
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500 | args[nargs++] = "-no-integrated-cpp"; |
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501 | args[nargs++] = "-Wno-deprecated"; |
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502 | #ifdef HAVE_CAST_FUNCTION_TYPE |
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503 | args[nargs++] = "-Wno-cast-function-type"; |
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504 | #endif // HAVE_CAST_FUNCTION_TYPE |
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505 | if ( ! std_flag && ! x_flag ) { |
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506 | args[nargs++] = "-std=gnu11"; // default c11, if none specified |
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507 | } // if |
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508 | args[nargs++] = "-fgnu89-inline"; |
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509 | args[nargs++] = "-D__int8_t_defined"; // prevent gcc type-size attributes |
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510 | args[nargs++] = ( *new string( string("-B") + bprefix ) ).c_str(); |
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511 | } else { |
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512 | cerr << argv[0] << " error, compiler \"" << compiler_name << "\" unsupported." << endl; |
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513 | exit( EXIT_FAILURE ); |
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514 | } // if |
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515 | |
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516 | args[nargs] = nullptr; // terminate |
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517 | |
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518 | #ifdef __DEBUG_H__ |
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519 | cerr << "nargs: " << nargs << endl; |
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520 | cerr << "args:" << endl; |
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521 | for ( int i = 0; args[i] != nullptr; i += 1 ) { |
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522 | cerr << " \"" << args[i] << "\"" << endl; |
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523 | } // for |
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524 | cerr << endl; |
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525 | #endif // __DEBUG_H__ |
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526 | |
---|
527 | if ( ! quiet ) { |
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528 | cerr << "CFA " << "Version " << Version << heading << endl; |
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529 | if ( help ) { |
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530 | cerr << |
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531 | "-debug\t\t\t: use cfa runtime with debug checking" << endl << |
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532 | "-help\t\t\t: print this help message" << endl << |
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533 | "-quiet\t\t\t: print no messages from the cfa command" << endl << |
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534 | "-CFA\t\t\t: run the cpp preprocessor and the cfa-cpp translator" << endl << |
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535 | "-XCFA -cfa-cpp-flag\t: pass next flag as-is to the cfa-cpp translator" << endl << |
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536 | "...\t\t\t: any other " << compiler_name << " flags" << endl; |
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537 | } // if |
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538 | } // if |
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539 | |
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540 | if ( verbose ) { |
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541 | if ( argc == 2 ) exit( EXIT_SUCCESS ); // if only the -v flag is specified, do not invoke gcc |
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542 | |
---|
543 | for ( int i = 0; args[i] != nullptr; i += 1 ) { |
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544 | cerr << args[i] << " "; |
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545 | } // for |
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546 | cerr << endl; |
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547 | } // if |
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548 | |
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549 | if ( ! nonoptarg ) { |
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550 | cerr << argv[0] << " error, no input files" << endl; |
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551 | exit( EXIT_FAILURE ); |
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552 | } // if |
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553 | |
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554 | // execute the command and return the result |
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555 | |
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556 | execvp( args[0], (char * const *)args ); // should not return |
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557 | perror( "CFA Translator error: execvp" ); |
---|
558 | exit( EXIT_FAILURE ); |
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559 | } // main |
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560 | |
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561 | // Local Variables: // |
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562 | // tab-width: 4 // |
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563 | // mode: c++ // |
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564 | // compile-command: "make install" // |
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565 | // End: // |
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