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 1.5 2005/05/21 09:55:04 ru Exp $ 29 * $DragonFly: src/usr.bin/c89/c89.c,v 1.5 2008/05/25 08:18:26 swildner 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 #include <sys/param.h> 40 41 #define CC "/usr/bin/cc" /* The big kahuna doing the actual work. */ 42 #define N_ARGS_PREPENDED NELEM(args_prepended) 43 44 /* 45 * We do not add -D_POSIX_SOURCE here because any POSIX source is supposed to 46 * define it before inclusion of POSIX headers. This has the additional 47 * benefit of making c89 -D_ANSI_SOURCE do the right thing (or any other 48 * -D_FOO_SOURCE feature test macro we support.) 49 */ 50 static const char *args_prepended[] = { 51 "cc", 52 "-std=iso9899:199409", 53 "-pedantic" 54 }; 55 56 static void usage(void); 57 58 /* 59 * Prepend the strings from args_prepended[] to the arg list; parse options, 60 * accepting only the POSIX c89 mandated options. Then exec cc to do the 61 * actual work. 62 */ 63 int 64 main(int argc, char **argv) 65 { 66 int Argc, i; 67 const char **Argv; 68 69 Argc = 0; 70 Argv = malloc((argc + 1 + N_ARGS_PREPENDED) * sizeof *Argv); 71 if (Argv == NULL) 72 err(1, "malloc"); 73 for (i = 0; i < (int)N_ARGS_PREPENDED; ++i) 74 Argv[Argc++] = args_prepended[i]; 75 while ((i = getopt(argc, argv, "cD:EgI:l:L:o:OsU:")) != -1) { 76 if (i == '?') 77 usage(); 78 if (i == 'l') { 79 if (argv[optind - 1][0] == '-') /* -llib */ 80 optind -= 1; 81 else /* -l lib */ 82 optind -= 2; 83 break; /* -llib or -l lib starts the operands. */ 84 } 85 } 86 if (argc == optind) { 87 warnx("missing operand"); 88 usage(); 89 } 90 91 /* Append argv[1..] at the end of Argv[]. */ 92 for (i = 1; i <= argc; ++i) 93 Argv[Argc++] = argv[i]; 94 execv(CC, __DECONST(char **, Argv)); 95 err(1, "execv(" CC ")"); 96 } 97 98 static void 99 usage(void) 100 { 101 fprintf(stderr, 102 "usage: c89 [-cEgOs] [-D name[=value]] ... [-I directory] ... [-L directory] ...\n" 103 " [-o outfile] [-U name] ... operand ...\n" 104 "\n" 105 " where operand is one or more of file.c, file.o, file.a\n" 106 " or -llibrary\n"); 107 exit(1); 108 } 109