| 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 | // cfa.cc --
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| 6 | //
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| 7 | // Author : Peter A. Buhr
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| 8 | // Created On : Tue Aug 20 13:44:49 2002
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| 9 | // Last Modified By : Peter A. Buhr
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| 10 | // Last Modified On : Tue Nov 11 09:19:15 2014
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| 11 | // Update Count : 106
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| 12 | //
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| 13 |
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| 14 | #include <iostream>
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| 15 | #include <cstdio> // perror
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| 16 | #include <cstdlib> // putenv, exit
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| 17 | #include <unistd.h> // execvp
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| 18 | #include <string> // STL version
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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 std::cerr;
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| 23 | using std::endl;
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| 24 | using std::string;
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| 25 |
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| 26 |
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| 27 | //#define __DEBUG_H__
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| 28 |
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| 29 |
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| 30 | bool prefix( string arg, string pre ) {
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| 31 | return arg.substr( 0, pre.size() ) == pre;
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| 32 | } // prefix
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| 33 |
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| 34 |
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| 35 | void shuffle( const char *args[], int S, int E, int N ) {
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| 36 | // S & E index 1 passed the end so adjust with -1
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| 37 | #ifdef __DEBUG_H__
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| 38 | cerr << "shuffle:" << S << " " << E << " " << N << endl;
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| 39 | #endif // __DEBUG_H__
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| 40 | for ( int j = E-1 + N; j > S-1 + N; j -=1 ) {
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| 41 | #ifdef __DEBUG_H__
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| 42 | cerr << "\t" << j << " " << j-N << endl;
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| 43 | #endif // __DEBUG_H__
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| 44 | args[j] = args[j-N];
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| 45 | } // for
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| 46 | } // shuffle
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| 47 |
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| 48 |
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| 49 | int main( int argc, char *argv[] ) {
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| 50 | string Version( VERSION ); // current version number from CONFIG
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| 51 | string Major( "0" ), Minor( "0" ), Patch( "0" ); // default version numbers
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| 52 | int posn1 = Version.find( "." ); // find the divider between major and minor version numbers
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| 53 | if ( posn1 == -1 ) { // not there ?
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| 54 | Major = Version;
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| 55 | } else {
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| 56 | Major = Version.substr( 0, posn1 );
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| 57 | int posn2 = Version.find( ".", posn1 + 1 ); // find the divider between minor and patch numbers
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| 58 | if ( posn2 == -1 ) { // not there ?
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| 59 | Minor = Version.substr( posn1 );
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| 60 | } else {
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| 61 | Minor = Version.substr( posn1 + 1, posn2 - posn1 - 1 );
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| 62 | Patch = Version.substr( posn2 + 1 );
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| 63 | } // if
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| 64 | } // if
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| 65 |
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| 66 | string installincdir( CFA_INCDIR ); // fixed location of cc1 and cfa-cpp commands
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| 67 | string installlibdir( CFA_LIBDIR ); // fixed location of include files
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| 68 |
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| 69 | string heading; // banner printed at start of cfa compilation
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| 70 | string arg; // current command-line argument during command-line parsing
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| 71 | string Bprefix; // path where gcc looks for compiler command steps
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| 72 | string langstd; // language standard
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| 73 |
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| 74 | string compiler_path( GCC_PATH ); // path/name of C compiler
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| 75 | string compiler_name; // name of C compiler
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| 76 |
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| 77 | bool nonoptarg = false; // indicates non-option argument specified
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| 78 | bool link = true; // linking as well as compiling
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| 79 | bool verbose = false; // -v flag
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| 80 | bool quiet = false; // -quiet flag
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| 81 | bool debug = true; // -debug flag
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| 82 | bool help = false; // -help flag
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| 83 | bool CFA_flag = false; // -CFA flag
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| 84 | bool cpp_flag = false; // -E or -M flag, preprocessor only
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| 85 | bool debugging = false; // -g flag
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| 86 |
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| 87 | const char *args[argc + 100]; // cfa command line values, plus some space for additional flags
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| 88 | int sargs = 1; // starting location for arguments in args list
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| 89 | int nargs = sargs; // number of arguments in args list; 0 => command name
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| 90 |
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| 91 | const char *libs[argc + 20]; // non-user libraries must come separately, plus some added libraries and flags
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| 92 | int nlibs = 0;
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| 93 |
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| 94 | #ifdef __DEBUG_H__
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| 95 | cerr << "CFA:" << endl;
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| 96 | #endif // __DEBUG_H__
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| 97 |
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| 98 | // process command-line arguments
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| 99 |
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| 100 | for ( int i = 1; i < argc; i += 1 ) {
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| 101 | #ifdef __DEBUG_H__
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| 102 | cerr << "argv[" << i << "]:\"" << argv[i] << "\"" << endl;
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| 103 | #endif // __DEBUG_H__
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| 104 | arg = argv[i]; // convert to string value
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| 105 | #ifdef __DEBUG_H__
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| 106 | cerr << "arg:\"" << arg << "\"" << endl;
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| 107 | #endif // __DEBUG_H__
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| 108 | if ( prefix( arg, "-" ) ) {
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| 109 | // pass through arguments
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| 110 |
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| 111 | if ( arg == "-Xlinker" || arg == "-o" ) {
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| 112 | args[nargs] = argv[i]; // pass the argument along
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| 113 | nargs += 1;
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| 114 | i += 1;
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| 115 | if ( i == argc ) continue; // next argument available ?
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| 116 | args[nargs] = argv[i]; // pass the argument along
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| 117 | nargs += 1;
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| 118 | } else if ( arg == "-XCFA" ) { // CFA pass through
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| 119 | i += 1;
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| 120 | args[nargs] = ( *new string( string("-D__CFA_FLAG__=") + argv[i] ) ).c_str();
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| 121 | nargs += 1;
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| 122 |
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| 123 | // CFA specific arguments
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| 124 |
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| 125 | } else if ( arg == "-CFA" ) {
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| 126 | CFA_flag = true; // strip the -CFA flag
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| 127 | link = false;
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| 128 | args[nargs] = "-E"; // replace the argument with -E
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| 129 | nargs += 1;
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| 130 | } else if ( arg == "-debug" ) {
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| 131 | debug = true; // strip the debug flag
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| 132 | } else if ( arg == "-nodebug" ) {
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| 133 | debug = false; // strip the nodebug flag
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| 134 | } else if ( arg == "-quiet" ) {
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| 135 | quiet = true; // strip the quiet flag
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| 136 | } else if ( arg == "-noquiet" ) {
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| 137 | quiet = false; // strip the noquiet flag
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| 138 | } else if ( arg == "-help" ) {
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| 139 | help = true; // strip the help flag
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| 140 | } else if ( arg == "-nohelp" ) {
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| 141 | help = false; // strip the nohelp flag
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| 142 | } else if ( arg == "-compiler" ) {
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| 143 | // use the user specified compiler
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| 144 | i += 1;
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| 145 | if ( i == argc ) continue; // next argument available ?
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| 146 | compiler_path = argv[i];
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| 147 | if ( putenv( (char *)( *new string( string( "__U_COMPILER__=" ) + argv[i]) ).c_str() ) != 0 ) {
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| 148 | cerr << argv[0] << " error, cannot set environment variable." << endl;
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| 149 | exit( EXIT_FAILURE );
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| 150 | } // if
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| 151 |
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| 152 | // C++ specific arguments
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| 153 |
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| 154 | } else if ( arg == "-v" ) {
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| 155 | verbose = true; // verbosity required
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| 156 | args[nargs] = argv[i]; // pass the argument along
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| 157 | nargs += 1;
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| 158 | } else if ( arg == "-g" ) {
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| 159 | debugging = true; // symbolic debugging required
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| 160 | args[nargs] = argv[i]; // pass the argument along
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| 161 | nargs += 1;
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| 162 | } else if ( prefix( arg, "-B" ) ) {
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| 163 | Bprefix = arg.substr(2); // strip the -B flag
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| 164 | args[nargs] = ( *new string( string("-D__GCC_BPREFIX__=") + Bprefix ) ).c_str();
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| 165 | nargs += 1;
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| 166 | } else if ( prefix( arg, "-b" ) ) {
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| 167 | if ( arg.length() == 2 ) { // separate argument ?
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| 168 | i += 1;
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| 169 | if ( i == argc ) continue; // next argument available ?
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| 170 | arg += argv[i]; // concatenate argument
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| 171 | } // if
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| 172 | // later versions of gcc require the -b option to appear at the start of the command line
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| 173 | shuffle( args, sargs, nargs, 1 ); // make room at front of argument list
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| 174 | args[sargs] = ( *new string( arg ) ).c_str(); // pass the argument along
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| 175 | if ( putenv( (char *)( *new string( string( "__GCC_MACHINE__=" ) + arg ) ).c_str() ) != 0 ) {
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| 176 | cerr << argv[0] << " error, cannot set environment variable." << endl;
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| 177 | exit( EXIT_FAILURE );
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| 178 | } // if
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| 179 | sargs += 1;
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| 180 | nargs += 1;
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| 181 | } else if ( prefix( arg, "-V" ) ) {
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| 182 | if ( arg.length() == 2 ) { // separate argument ?
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| 183 | i += 1;
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| 184 | if ( i == argc ) continue; // next argument available ?
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| 185 | arg += argv[i]; // concatenate argument
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| 186 | } // if
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| 187 | // later versions of gcc require the -V option to appear at the start of the command line
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| 188 | shuffle( args, sargs, nargs, 1 ); // make room at front of argument list
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| 189 | args[sargs] = ( *new string( arg ) ).c_str(); // pass the argument along
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| 190 | if ( putenv( (char *)( *new string( string( "__GCC_VERSION__=" ) + arg ) ).c_str() ) != 0 ) {
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| 191 | cerr << argv[0] << " error, cannot set environment variable." << endl;
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| 192 | exit( EXIT_FAILURE );
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| 193 | } // if
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| 194 | sargs += 1;
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| 195 | nargs += 1;
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| 196 | } else if ( arg == "-c" || arg == "-S" || arg == "-E" || arg == "-M" || arg == "-MM" ) {
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| 197 | args[nargs] = argv[i]; // pass the argument along
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| 198 | nargs += 1;
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| 199 | if ( arg == "-E" || arg == "-M" || arg == "-MM" ) {
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| 200 | cpp_flag = true; // cpp only
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| 201 | } // if
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| 202 | link = false; // no linkage required
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| 203 | } else if ( arg[1] == 'l' ) {
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| 204 | // if the user specifies a library, load it after user code
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| 205 | libs[nlibs] = argv[i];
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| 206 | nlibs += 1;
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| 207 | } else {
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| 208 | // concatenate any other arguments
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| 209 | args[nargs] = argv[i];
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| 210 | nargs += 1;
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| 211 | } // if
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| 212 | } else {
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| 213 | // concatenate other arguments
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| 214 | args[nargs] = argv[i];
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| 215 | nargs += 1;
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| 216 | nonoptarg = true;
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| 217 | } // if
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| 218 | } // for
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| 219 |
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| 220 | #ifdef __DEBUG_H__
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| 221 | cerr << "args:";
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| 222 | for ( int i = 1; i < nargs; i += 1 ) {
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| 223 | cerr << " " << args[i];
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| 224 | } // for
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| 225 | cerr << endl;
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| 226 | #endif // __DEBUG_H__
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| 227 |
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| 228 | if ( cpp_flag && CFA_flag ) {
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| 229 | cerr << argv[0] << " error, cannot use -E and -CFA flags together." << endl;
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| 230 | exit( EXIT_FAILURE );
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| 231 | } // if
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| 232 |
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| 233 | string d;
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| 234 | if ( debug ) {
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| 235 | d = "-d";
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| 236 | } // if
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| 237 |
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| 238 | args[nargs] = "-I" CFA_INCDIR;
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| 239 | nargs += 1;
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| 240 |
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| 241 | if ( link ) {
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| 242 | // include the cfa library in case it's needed
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| 243 | args[nargs] = "-L" CFA_LIBDIR;
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| 244 | nargs += 1;
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| 245 | args[nargs] = "-lcfa";
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| 246 | nargs += 1;
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| 247 | } // if
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| 248 |
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| 249 | // add the correct set of flags based on the type of compile this is
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| 250 |
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| 251 | args[nargs] = ( *new string( string("-D__CFA_MAJOR__=") + Major ) ).c_str();
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| 252 | nargs += 1;
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| 253 | args[nargs] = ( *new string( string("-D__CFA_MINOR__=") + Minor ) ).c_str();
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| 254 | nargs += 1;
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| 255 |
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| 256 | if ( cpp_flag ) {
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| 257 | args[nargs] = "-D__CPP__";
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| 258 | nargs += 1;
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| 259 | } // if
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| 260 |
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| 261 | if ( CFA_flag ) {
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| 262 | args[nargs] = "-D__CFA__";
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| 263 | nargs += 1;
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| 264 | } // if
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| 265 |
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| 266 | if ( debug ) {
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| 267 | heading += " (debug)";
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| 268 | args[nargs] = "-D__CFA_DEBUG__";
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| 269 | nargs += 1;
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| 270 | } else {
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| 271 | heading += " (no debug)";
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| 272 | } // if
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| 273 |
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| 274 | if ( Bprefix.length() == 0 ) {
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| 275 | Bprefix = installlibdir;
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| 276 | args[nargs] = ( *new string( string("-D__GCC_BPREFIX__=") + Bprefix ) ).c_str();
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| 277 | nargs += 1;
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| 278 | } // if
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| 279 |
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| 280 | // execute the compilation command
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| 281 |
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| 282 | args[0] = compiler_path.c_str(); // set compiler command for exec
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| 283 | // find actual name of the compiler independent of the path to it
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| 284 | int p = compiler_path.find_last_of( '/' ); // scan r -> l for first '/'
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| 285 | if ( p == -1 ) {
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| 286 | compiler_name = compiler_path;
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| 287 | } else {
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| 288 | compiler_name = *new string( compiler_path.substr( p + 1 ) );
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| 289 | } // if
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| 290 |
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| 291 | if ( prefix( compiler_name, "gcc" ) ) { // allow suffix on gcc name
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| 292 | args[nargs] = "-no-integrated-cpp";
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| 293 | nargs += 1;
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| 294 | args[nargs] = "-Wno-deprecated";
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| 295 | nargs += 1;
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| 296 | args[nargs] = ( *new string( string("-B") + Bprefix + "/" ) ).c_str();
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| 297 | nargs += 1;
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| 298 | } else {
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| 299 | cerr << argv[0] << " error, compiler " << compiler_name << " not supported." << endl;
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| 300 | exit( EXIT_FAILURE );
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| 301 | } // if
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| 302 |
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| 303 | for ( int i = 0; i < nlibs; i += 1 ) { // copy non-user libraries after all user libraries
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| 304 | args[nargs] = libs[i];
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| 305 | nargs += 1;
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| 306 | } // for
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| 307 |
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| 308 | args[nargs] = NULL; // terminate with NULL
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| 309 |
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| 310 | #ifdef __DEBUG_H__
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| 311 | cerr << "nargs: " << nargs << endl;
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| 312 | cerr << "args:" << endl;
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| 313 | for ( int i = 0; args[i] != NULL; i += 1 ) {
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| 314 | cerr << " \"" << args[i] << "\"" << endl;
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| 315 | } // for
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| 316 | #endif // __DEBUG_H__
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| 317 |
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| 318 | if ( ! quiet ) {
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| 319 | cerr << "CFA " << "Version " << Version << heading << endl;
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| 320 |
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| 321 | if ( help ) {
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| 322 | cerr <<
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| 323 | "-debug\t\t\t: use cfa runtime with debug checking" << endl <<
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| 324 | "-help\t\t\t: print this help message" << endl <<
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| 325 | "-quiet\t\t\t: print no messages from the cfa command" << endl <<
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| 326 | "-CFA\t\t\t: run the cpp preprocessor and the cfa-cpp translator" << endl <<
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| 327 | "-XCFA -cfa-cpp-flag\t: pass next flag as-is to the cfa-cpp translator" << endl <<
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| 328 | "...\t\t\t: any other " << compiler_name << " flags" << endl;
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| 329 | } // if
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| 330 | } // if
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| 331 |
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| 332 | if ( verbose ) {
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| 333 | if ( argc == 2 ) exit( EXIT_SUCCESS ); // if only the -v flag is specified, do not invoke gcc
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| 334 |
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| 335 | for ( int i = 0; args[i] != NULL; i += 1 ) {
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| 336 | cerr << args[i] << " ";
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| 337 | } // for
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| 338 | cerr << endl;
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| 339 | } // if
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| 340 |
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| 341 | if ( ! nonoptarg ) {
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| 342 | cerr << argv[0] << " error, no input files" << endl;
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| 343 | exit( EXIT_FAILURE );
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| 344 | } // if
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| 345 |
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| 346 | // execute the command and return the result
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| 347 |
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| 348 | execvp( args[0], (char *const *)args ); // should not return
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| 349 | perror( "CFA Translator error: cfa level, execvp" );
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| 350 | exit( EXIT_FAILURE );
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| 351 | } // main
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| 352 |
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| 353 | // Local Variables: //
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| 354 | // compile-command: "make install" //
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| 355 | // End: //
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