[51b7345] | 1 | // -*- Mode: C++ -*- |
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| 2 | // |
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| 3 | // CForall Version 1.0, Copyright (C) Peter A. Buhr 2002 |
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| 4 | // |
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| 5 | // cpp.cc -- |
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| 6 | // |
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| 7 | // Author : Peter A. Buhr |
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| 8 | // Created On : Thu Aug 29 12:24:06 2002 |
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| 9 | // Last Modified By : Peter A. Buhr |
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[bdd516a] | 10 | // Last Modified On : Tue Apr 21 07:23:38 2015 |
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| 11 | // Update Count : 52 |
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[51b7345] | 12 | // |
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| 13 | |
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| 14 | #include <iostream> |
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| 15 | #include <string> |
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| 16 | #include <stdio.h> // tempnam, freopen, perror |
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| 17 | #include <unistd.h> // execvp, fork, unlink |
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| 18 | #include <sys/wait.h> // wait |
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| 19 | |
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| 20 | #include "../config.h" // configure info |
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| 21 | |
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| 22 | using namespace std; |
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| 23 | |
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| 24 | |
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| 25 | //#define __DEBUG_H__ |
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| 26 | |
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| 27 | |
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| 28 | int main( int argc, char *argv[] ) { |
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| 29 | int code; |
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| 30 | int i; |
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| 31 | |
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| 32 | string arg; |
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| 33 | string bprefix; |
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| 34 | |
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| 35 | string cpp_in; |
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| 36 | string cpp_out; |
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| 37 | string cpp; |
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| 38 | string cpp_name( "gcc" ); |
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| 39 | |
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| 40 | bool CFA_flag = false; |
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| 41 | bool cpp_flag = false; |
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| 42 | bool gnu = false; |
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| 43 | |
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| 44 | const char *args[argc + 100]; // leave space for 100 additional cfa command line values |
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| 45 | int nargs = 1; // 0 => command name |
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| 46 | const char *argsCppOnly[argc]; // cpp only arguments |
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| 47 | int nargsCppOnly = 0; |
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| 48 | const char *argsCFAOnly[argc]; // CFA only arguments |
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| 49 | int nargsCFAOnly = 0; |
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| 50 | |
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| 51 | // get a name of a temporary file |
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| 52 | |
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| 53 | char *tmpfile = tempnam( NULL, "CFA" ); // storage is not freed |
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| 54 | |
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| 55 | #ifdef __DEBUG_H__ |
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| 56 | cerr << "CPP:" << endl; |
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| 57 | #endif // __DEBUG_H__ |
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| 58 | |
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| 59 | // process all the arguments |
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| 60 | |
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| 61 | for ( i = 1; i < argc; i += 1 ) { |
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| 62 | #ifdef __DEBUG_H__ |
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| 63 | cerr << "argv[" << i << "]:\"" << argv[i] << "\"" << endl; |
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| 64 | #endif // __DEBUG_H__ |
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| 65 | arg = argv[i]; |
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| 66 | #ifdef __DEBUG_H__ |
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| 67 | cerr << "arg:\"" << arg << "\"" << endl; |
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| 68 | #endif // __DEBUG_H__ |
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| 69 | if ( arg.substr(0,1) == "-" ) { |
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| 70 | if ( arg == "-D__CFA__" ) { |
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| 71 | CFA_flag = true; // strip -D__CFA__ flag |
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| 72 | } else if ( arg == "-D__CPP__" ) { |
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| 73 | cpp_flag = true; // strip -D__CPP__ flag |
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| 74 | } else if ( arg.substr(0,sizeof("-D__GNU")-1) == "-D__GNU" ) { |
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| 75 | gnu = true; // strip -D__GNUxxx flags to remove duplication |
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| 76 | } else if ( arg == "-lang-c" ) { // strip -lang-c flag |
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| 77 | } else if ( arg.substr(0,sizeof("-A")-1) == "-A" ) { // strip -A flags |
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| 78 | } else if ( arg.substr(0,sizeof("-D__STDC_HOSTED__")-1) == "-D__STDC_HOSTED__" ) { // strip this define: causes conflict |
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| 79 | } else if ( arg.substr(0,sizeof("-o")-1) == "-o" ) { |
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| 80 | i += 1; // strip -o flag and its argument |
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| 81 | } else if ( arg.substr(0,sizeof("-D__CFA_FLAG__")-1) == "-D__CFA_FLAG__" ) { |
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| 82 | argsCFAOnly[nargsCFAOnly] = ( *new string( arg.substr(sizeof("-D__CFA_FLAG__")) ) ).c_str(); // pass argument along |
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| 83 | nargsCFAOnly += 1; |
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| 84 | } else if ( arg == "-v" ) { |
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| 85 | argsCppOnly[nargsCppOnly] = argv[i]; // pass argument along |
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| 86 | nargsCppOnly += 1; |
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| 87 | } else if ( arg.substr(0,sizeof("-I")-1) == "-I" ) { |
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| 88 | argsCppOnly[nargsCppOnly] = argv[i]; // pass argument along |
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| 89 | nargsCppOnly += 1; |
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| 90 | } else if ( arg == "-C" || arg == "-P" || arg == "-H" ) { |
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| 91 | argsCppOnly[nargsCppOnly] = argv[i]; // pass argument along |
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| 92 | nargsCppOnly += 1; |
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| 93 | } else if ( arg.substr(0,sizeof("-W")-1) == "-W" ) { |
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| 94 | argsCppOnly[nargsCppOnly] = argv[i]; // pass argument along |
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| 95 | nargsCppOnly += 1; |
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| 96 | } else if ( arg == "-lint" ) { |
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| 97 | argsCppOnly[nargsCppOnly] = argv[i]; // pass argument along |
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| 98 | nargsCppOnly += 1; |
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| 99 | } else if ( arg == "-pedantic" || arg == "-pedantic-errors" ) { |
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| 100 | argsCppOnly[nargsCppOnly] = argv[i]; // pass argument along |
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| 101 | nargsCppOnly += 1; |
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| 102 | } else if ( arg == "-traditional" || arg == "-trigraphs" ) { |
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| 103 | argsCppOnly[nargsCppOnly] = argv[i]; // pass argument along |
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| 104 | nargsCppOnly += 1; |
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| 105 | } else if ( arg == "-dM" || arg == "-dD" ) { |
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| 106 | argsCppOnly[nargsCppOnly] = argv[i]; // pass argument along |
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| 107 | nargsCppOnly += 1; |
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| 108 | } else if ( arg == "-M" || arg == "-MG" || arg == "-MM" ) { |
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| 109 | argsCppOnly[nargsCppOnly] = argv[i]; // pass argument along |
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| 110 | nargsCppOnly += 1; |
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| 111 | } else if ( arg == "-MD" || arg == "-MMD" ) { |
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| 112 | argsCppOnly[nargsCppOnly] = argv[i]; // pass argument along |
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| 113 | nargsCppOnly += 1; |
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| 114 | i += 1; |
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| 115 | argsCppOnly[nargsCppOnly] = argv[i]; // pass argument along |
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| 116 | nargsCppOnly += 1; |
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| 117 | #ifdef __DEBUG_H__ |
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| 118 | cerr << "argv[" << i << "]:\"" << argv[i] << "\"" << endl; |
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| 119 | #endif // __DEBUG_H__ |
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| 120 | } else if ( arg == "-imacros" ) { |
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| 121 | argsCppOnly[nargsCppOnly] = argv[i]; // pass argument along |
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| 122 | nargsCppOnly += 1; |
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| 123 | i += 1; |
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| 124 | argsCppOnly[nargsCppOnly] = argv[i]; // pass argument along |
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| 125 | nargsCppOnly += 1; |
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| 126 | #ifdef __DEBUG_H__ |
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| 127 | cerr << "argv[" << i << "]:\"" << argv[i] << "\"" << endl; |
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| 128 | #endif // __DEBUG_H__ |
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| 129 | } else if ( arg == "-include" ) { |
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| 130 | argsCppOnly[nargsCppOnly] = argv[i]; // pass argument along |
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| 131 | nargsCppOnly += 1; |
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| 132 | i += 1; |
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| 133 | argsCppOnly[nargsCppOnly] = argv[i]; // pass argument along |
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| 134 | nargsCppOnly += 1; |
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| 135 | #ifdef __DEBUG_H__ |
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| 136 | cerr << "argv[" << i << "]:\"" << argv[i] << "\"" << endl; |
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| 137 | #endif // __DEBUG_H__ |
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| 138 | } else if ( arg == "-idirafter" ) { |
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| 139 | argsCppOnly[nargsCppOnly] = argv[i]; // pass argument along |
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| 140 | nargsCppOnly += 1; |
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| 141 | i += 1; |
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| 142 | argsCppOnly[nargsCppOnly] = argv[i]; // pass argument along |
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| 143 | nargsCppOnly += 1; |
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| 144 | #ifdef __DEBUG_H__ |
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| 145 | cerr << "argv[" << i << "]:\"" << argv[i] << "\"" << endl; |
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| 146 | #endif // __DEBUG_H__ |
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| 147 | } else if ( arg == "-iprefix" ) { |
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| 148 | argsCppOnly[nargsCppOnly] = argv[i]; // pass argument along |
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| 149 | nargsCppOnly += 1; |
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| 150 | i += 1; |
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| 151 | argsCppOnly[nargsCppOnly] = argv[i]; // pass argument along |
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| 152 | nargsCppOnly += 1; |
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| 153 | #ifdef __DEBUG_H__ |
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| 154 | cerr << "argv[" << i << "]:\"" << argv[i] << "\"" << endl; |
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| 155 | #endif // __DEBUG_H__ |
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| 156 | } else if ( arg == "-iwithprefix" ) { |
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| 157 | argsCppOnly[nargsCppOnly] = argv[i]; // pass argument along |
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| 158 | nargsCppOnly += 1; |
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| 159 | i += 1; |
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| 160 | argsCppOnly[nargsCppOnly] = argv[i]; // pass argument along |
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| 161 | nargsCppOnly += 1; |
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| 162 | #ifdef __DEBUG_H__ |
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| 163 | cerr << "argv[" << i << "]:\"" << argv[i] << "\"" << endl; |
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| 164 | #endif // __DEBUG_H__ |
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| 165 | } else if ( arg == "-isystem" ) { |
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| 166 | argsCppOnly[nargsCppOnly] = argv[i]; // pass argument along |
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| 167 | nargsCppOnly += 1; |
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| 168 | i += 1; |
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| 169 | argsCppOnly[nargsCppOnly] = argv[i]; // pass argument along |
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| 170 | nargsCppOnly += 1; |
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| 171 | #ifdef __DEBUG_H__ |
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| 172 | cerr << "argv[" << i << "]:\"" << argv[i] << "\"" << endl; |
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| 173 | #endif // __DEBUG_H__ |
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| 174 | } else if ( arg.substr(0,sizeof("-D__GCC_BPREFIX__")-1) == "-D__GCC_BPREFIX__" ) { |
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| 175 | bprefix = arg.substr(sizeof("-D__GCC_BPREFIX__")); |
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| 176 | } else if ( arg.substr(0,sizeof("-D__GCC_MACHINE__")-1) == "-D__GCC_MACHINE__" ) { |
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| 177 | argsCppOnly[nargsCppOnly] = "-b"; // pass argument along |
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| 178 | nargsCppOnly += 1; |
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| 179 | argsCppOnly[nargsCppOnly] = ( *new string(arg.substr(sizeof("-D__GCC_MACHINE__")) ) ).c_str(); // pass argument along |
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| 180 | nargsCppOnly += 1; |
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| 181 | } else if ( arg.substr(0,sizeof("-D__GCC_VERSION__")-1) == "-D__GCC_VERSION__" ) { |
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| 182 | argsCppOnly[nargsCppOnly] = "-V"; // pass argument along |
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| 183 | nargsCppOnly += 1; |
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| 184 | argsCppOnly[nargsCppOnly] = ( *new string( arg.substr(sizeof("-D__GCC_VERSION__")) ) ).c_str(); // pass argument along |
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| 185 | nargsCppOnly += 1; |
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| 186 | } else if ( arg.substr(0,sizeof("-D__CPP_NAME__")-1) == "-D__CPP_NAME__" ) { |
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| 187 | cpp_name = arg.substr(sizeof("-D__CPP_NAME__")); |
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| 188 | } else if ( arg.substr(1,1) != "+" ) { |
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| 189 | args[nargs] = argv[i]; // pass argument along |
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| 190 | nargs += 1; |
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| 191 | } // if |
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| 192 | } else { |
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| 193 | if ( cpp_in.length() == 0 ) { |
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| 194 | cpp_in = arg; |
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| 195 | #ifdef __DEBUG_H__ |
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| 196 | cerr << "cpp_in:\"" << cpp_in << "\"" << endl; |
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| 197 | #endif // __DEBUG_H__ |
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| 198 | } else if ( cpp_out.length() == 0 ) { |
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| 199 | cpp_out = arg; |
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| 200 | #ifdef __DEBUG_H__ |
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| 201 | cerr << "cpp_out:\"" << cpp_out << "\""<< endl; |
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| 202 | #endif // __DEBUG_H__ |
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| 203 | } else { |
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| 204 | cerr << "Usage: " << argv[0] << " input-file [output-file] [options]" << endl; |
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| 205 | exit( 1 ); |
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| 206 | } // if |
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| 207 | } // if |
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| 208 | } // for |
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| 209 | |
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| 210 | argsCppOnly[nargsCppOnly] = "-D__cplusplus"; |
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| 211 | nargsCppOnly += 1; |
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| 212 | |
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| 213 | if ( cpp_in.length() == 0 ) { |
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| 214 | cerr << "Usage: " << argv[0] << " input-file [output-file] [options]" << endl; |
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| 215 | exit( 1 ); |
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| 216 | } // if |
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| 217 | |
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| 218 | if ( cpp_flag && CFA_flag ) { |
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| 219 | cerr << argv[0] << " Error cannot use -E and -CFA flags together." << endl; |
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[bdd516a] | 220 | exit( EXIT_FAILURE ); |
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[51b7345] | 221 | } // if |
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| 222 | |
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| 223 | // The -E flag is specified so only run the preprocessor and output is |
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| 224 | // written to standard output. |
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| 225 | // |
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| 226 | // OR |
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| 227 | // |
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| 228 | // The preprocessor is called internally during compilation, probably by |
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| 229 | // "collect" during linking to compile some ctor/dtor code. In this case, |
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| 230 | // the cfa-cpp preprocessor is not run. Output is redirected to cpp_out |
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| 231 | |
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| 232 | if ( cpp_flag || bprefix.length() == 0 ) { |
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| 233 | if ( ! cpp_flag ) { |
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| 234 | if ( freopen( cpp_out.c_str(), "w", stdout ) == NULL ) { // redirect stdout if not -E |
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| 235 | cerr << argv[0] << ": Error can't write to " << cpp_out << endl; |
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[bdd516a] | 236 | exit( EXIT_FAILURE ); |
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[51b7345] | 237 | } // if |
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| 238 | |
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| 239 | // If called by collect, must prevent the compiler from recursively |
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| 240 | // calling this cpp through the -B path. To stop the recursion, |
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| 241 | // sent the COMPILER_PATH environment variable to the NULL string, |
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| 242 | // which removes the -B path supplied on the initial cfa command. |
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| 243 | |
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| 244 | if ( gnu ) { |
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| 245 | putenv( "COMPILER_PATH=" ); |
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| 246 | } // if |
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| 247 | } // if |
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| 248 | |
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| 249 | if ( bprefix.length() == 0 ) { // collect ? |
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| 250 | args[0] = "gcc"; // use gcc |
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| 251 | } else { |
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| 252 | args[0] = cpp_name.c_str(); |
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| 253 | } // if |
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| 254 | args[nargs] = "-E"; |
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| 255 | nargs += 1; |
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| 256 | |
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| 257 | for ( i = 0; i < nargsCppOnly; i += 1 ) { // copy cpp only arguments |
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| 258 | args[nargs] = argsCppOnly[i]; |
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| 259 | nargs += 1; |
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| 260 | } // if |
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| 261 | |
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| 262 | args[nargs] = cpp_in.c_str(); |
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| 263 | nargs += 1; |
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| 264 | args[nargs] = NULL; // terminate argument list |
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| 265 | |
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| 266 | #ifdef __DEBUG_H__ |
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| 267 | cerr << "nargs: " << nargs << endl; |
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| 268 | for ( i = 0; args[i] != NULL; i += 1 ) { |
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| 269 | cerr << args[i] << " "; |
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| 270 | } // for |
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| 271 | cerr << endl; |
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| 272 | #endif // __DEBUG_H__ |
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| 273 | |
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| 274 | execvp( args[0], (char *const *)args ); // should not return |
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| 275 | perror( "CFA translator error: cpp level, exec" ); |
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[bdd516a] | 276 | exit( EXIT_FAILURE ); |
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[51b7345] | 277 | } // if |
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| 278 | |
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| 279 | // Run the C preprocessor and save the output in tmpfile. |
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| 280 | |
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| 281 | if ( fork() == 0 ) { // child process ? |
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| 282 | if ( freopen( tmpfile, "w", stdout ) == NULL) { // redirect output to tmpfile |
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| 283 | cerr << argv[0] << ": Error can't write to " << tmpfile << endl; |
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[bdd516a] | 284 | exit( EXIT_FAILURE ); |
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[51b7345] | 285 | } // if |
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| 286 | |
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| 287 | args[0] = cpp_name.c_str(); |
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| 288 | args[nargs] = "-E"; |
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| 289 | nargs += 1; |
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| 290 | |
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| 291 | for ( i = 0; i < nargsCppOnly; i += 1 ) { // copy cpp only arguments |
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| 292 | args[nargs] = argsCppOnly[i]; |
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| 293 | nargs += 1; |
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| 294 | } // if |
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| 295 | |
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| 296 | args[nargs] = cpp_in.c_str(); |
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| 297 | nargs += 1; |
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| 298 | args[nargs] = NULL; // terminate argument list |
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| 299 | |
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| 300 | #ifdef __DEBUG_H__ |
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| 301 | cerr << "cpp nargs: " << nargs << endl; |
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| 302 | for ( i = 0; args[i] != NULL; i += 1 ) { |
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| 303 | cerr << args[i] << " "; |
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| 304 | } // for |
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| 305 | cerr << endl; |
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| 306 | #endif // __DEBUG_H__ |
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| 307 | |
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| 308 | execvp( args[0], (char *const *)args ); // should not return |
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| 309 | perror( "CFA translator error: cpp level, exec" ); |
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[bdd516a] | 310 | exit( EXIT_FAILURE ); |
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[51b7345] | 311 | } // if |
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| 312 | |
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| 313 | wait( &code ); // wait for child to finish |
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| 314 | |
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| 315 | if ( WIFSIGNALED(code) != 0 ) { // child completed successfully ? |
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| 316 | unlink( tmpfile ); |
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| 317 | cerr << "CFA translator error: cpp failed with signal " << WTERMSIG(code) << endl; |
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[bdd516a] | 318 | exit( EXIT_FAILURE ); |
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[51b7345] | 319 | } // if |
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| 320 | |
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| 321 | // If -CFA flag specified, run the cfa-cpp preprocessor on the temporary |
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| 322 | // file, and output is written to standard output. Otherwise, run the |
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| 323 | // cfa-cpp preprocessor on the temporary file and save the result into the |
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| 324 | // output file. |
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| 325 | |
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| 326 | if ( fork() == 0 ) { // child process ? |
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| 327 | args[0] = ( *new string( bprefix + "/cfa-cpp" ) ).c_str(); |
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| 328 | |
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| 329 | for ( i = 0; i < nargsCFAOnly; i += 1 ) { // copy CFA only arguments |
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| 330 | args[nargs] = argsCFAOnly[i]; |
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| 331 | nargs += 1; |
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| 332 | } // if |
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| 333 | args[nargs] = "-p"; |
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| 334 | nargs += 1; |
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| 335 | |
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| 336 | args[nargs] = tmpfile; |
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| 337 | nargs += 1; |
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| 338 | |
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| 339 | if ( ! CFA_flag ) { // run cfa-cpp ? |
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| 340 | args[nargs] = cpp_out.c_str(); |
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| 341 | nargs += 1; |
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| 342 | } // if |
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| 343 | args[nargs] = NULL; // terminate argument list |
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| 344 | |
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| 345 | #ifdef __DEBUG_H__ |
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| 346 | cerr << "cfa-cpp nargs: " << nargs << endl; |
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| 347 | for ( i = 0; args[i] != NULL; i += 1 ) { |
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| 348 | cerr << args[i] << " "; |
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| 349 | } // for |
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| 350 | cerr << endl; |
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| 351 | #endif // __DEBUG_H__ |
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| 352 | |
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| 353 | execvp( args[0], (char *const *)args ); // should not return |
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| 354 | perror( "CFA translator error: cpp level, exec" ); |
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| 355 | } // if |
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| 356 | |
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| 357 | wait( &code ); // wait for child to finish |
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| 358 | |
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[bdd516a] | 359 | if ( unlink( tmpfile ) == -1 ) { |
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| 360 | cerr << "CFA translator error: cfa-cpp failed " << errno << " to remove temporary file \"" << tmpfile << "\"" << endl; |
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| 361 | exit( EXIT_FAILURE ); |
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| 362 | } // if |
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[51b7345] | 363 | |
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| 364 | if ( WIFSIGNALED(code) != 0 ) { // child completed successfully ? |
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| 365 | cerr << "CFA translator error: cfa-cpp failed with signal " << WTERMSIG(code) << endl; |
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[bdd516a] | 366 | exit( EXIT_FAILURE ); |
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[51b7345] | 367 | } // if |
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| 368 | |
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| 369 | if ( CFA_flag ) { // -CFA flag ? |
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[bdd516a] | 370 | exit( EXIT_FAILURE ); // tell gcc not to go any further |
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[51b7345] | 371 | } else { |
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| 372 | exit( WEXITSTATUS(code) ); |
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| 373 | } // if |
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| 374 | } // main |
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| 375 | |
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| 376 | |
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| 377 | // Local Variables: // |
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| 378 | // compile-command: "gmake" // |
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| 379 | // End: // |
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