1 /*- 2 * This is the Posix.2 mandated C compiler. Basically, a hook to the 3 * cc(1) command. 4 * 5 * Copyright (c) 2001 by Jens Schweikhardt 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * $FreeBSD: src/usr.bin/c89/c89.c,v 1.1.2.1 2001/05/22 19:05:01 schweikh Exp $ 29 * $DragonFly: src/usr.bin/c89/c89.c,v 1.3 2005/01/16 19:17:28 joerg Exp $ 30 */ 31 32 #include <err.h> 33 #include <stdio.h> 34 #include <stdlib.h> 35 #include <string.h> 36 37 #include <unistd.h> 38 39 #define CC "/usr/bin/cc" /* The big kahuna doing the actual work. */ 40 #define N_ARGS_PREPENDED __arysize(args_prepended) 41 42 /* 43 * We do not add -D_POSIX_SOURCE here because any POSIX source is supposed to 44 * define it before inclusion of POSIX headers. This has the additional 45 * benefit of making c89 -D_ANSI_SOURCE do the right thing (or any other 46 * -D_FOO_SOURCE feature test macro we support.) 47 */ 48 static const char *args_prepended[] = { 49 "-std=iso9899:199409", 50 "-pedantic" 51 }; 52 53 static void usage(void); 54 55 /* 56 * Prepend the strings from args_prepended[] to the arg list; parse options, 57 * accepting only the POSIX c89 mandated options. Then exec cc to do the 58 * actual work. 59 */ 60 int 61 main(int argc, char **argv) 62 { 63 int Argc, i; 64 const char **Argv; 65 66 Argc = 0; 67 Argv = malloc((argc + 1 + N_ARGS_PREPENDED) * sizeof *Argv); 68 if (Argv == NULL) 69 err(1, "malloc"); 70 Argv[Argc++] = argv[0]; 71 for (i = 0; i < (int)N_ARGS_PREPENDED; ++i) 72 Argv[Argc++] = args_prepended[i]; 73 while ((i = getopt(argc, argv, "cD:EgI:l:L:o:OsU:")) != -1) { 74 if (i == '?') 75 usage(); 76 if (i == 'l') { 77 if (argv[optind - 1][0] == '-') /* -llib */ 78 optind -= 1; 79 else /* -l lib */ 80 optind -= 2; 81 break; /* -llib or -l lib starts the operands. */ 82 } 83 } 84 if (argc == optind) { 85 warnx("missing operand"); 86 usage(); 87 } 88 89 /* Append argv[1..] at the end of Argv[]. */ 90 for (i = 1; i <= argc; ++i) 91 Argv[Argc++] = argv[i]; 92 execv(CC, __DECONST(char **, Argv)); 93 err(1, "execv(" CC ")"); 94 } 95 96 static void 97 usage(void) 98 { 99 fprintf(stderr, 100 "usage: c89 [-c] [-D name[=value]] [...] [-E] [-g] [-I directory ...]\n" 101 " [-L directory ...] [-o outfile] [-O] [-s] [-U name ...] operand ...\n" 102 "\n" 103 " where operand is one or more of file.c, file.o, file.a\n" 104 " or -llibrary\n"); 105 exit(1); 106 } 107