c89.c revision 200462
1153838Sdfr/*- 2153838Sdfr * This is the Posix.2 mandated C compiler. Basically, a hook to the 3153838Sdfr * cc(1) command. 4153838Sdfr * 5153838Sdfr * Copyright (c) 2001 by Jens Schweikhardt 6153838Sdfr * 7153838Sdfr * Redistribution and use in source and binary forms, with or without 8153838Sdfr * modification, are permitted provided that the following conditions 9153838Sdfr * are met: 10153838Sdfr * 1. Redistributions of source code must retain the above copyright 11153838Sdfr * notice, this list of conditions and the following disclaimer. 12153838Sdfr * 2. Redistributions in binary form must reproduce the above copyright 13153838Sdfr * notice, this list of conditions and the following disclaimer in the 14153838Sdfr * documentation and/or other materials provided with the distribution. 15153838Sdfr * 16153838Sdfr * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND 17153838Sdfr * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18153838Sdfr * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19153838Sdfr * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20153838Sdfr * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21153838Sdfr * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22153838Sdfr * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23153838Sdfr * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24153838Sdfr * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25153838Sdfr * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26153838Sdfr * SUCH DAMAGE. 27153838Sdfr * 28153838Sdfr */ 29153838Sdfr 30153838Sdfr#include <sys/cdefs.h> 31153838Sdfr__FBSDID("$FreeBSD: head/usr.bin/c89/c89.c 200462 2009-12-13 03:14:06Z delphij $"); 32153838Sdfr 33153838Sdfr#include <err.h> 34153838Sdfr#include <stdio.h> 35153838Sdfr#include <stdlib.h> 36153838Sdfr#include <string.h> 37153838Sdfr 38153838Sdfr#include <unistd.h> 39153838Sdfr 40153838Sdfr#define CC "/usr/bin/cc" /* The big kahuna doing the actual work. */ 41153838Sdfr#define N_ARGS_PREPENDED (sizeof(args_prepended) / sizeof(args_prepended[0])) 42153838Sdfr 43153838Sdfr/* 44153838Sdfr * We do not add -D_POSIX_SOURCE here because any POSIX source is supposed to 45178828Sdfr * define it before inclusion of POSIX headers. This has the additional 46178828Sdfr * benefit of making c89 -D_ANSI_SOURCE do the right thing (or any other 47178828Sdfr * -D_FOO_SOURCE feature test macro we support.) 48178828Sdfr */ 49178828Sdfrstatic const char *args_prepended[] = { 50178828Sdfr "-std=iso9899:199409", 51153838Sdfr "-pedantic" 52153838Sdfr}; 53153838Sdfr 54static void usage(void); 55 56/* 57 * Prepend the strings from args_prepended[] to the arg list; parse options, 58 * accepting only the POSIX c89 mandated options. Then exec cc to do the 59 * actual work. 60 */ 61int 62main(int argc, char **argv) 63{ 64 int Argc, i; 65 size_t j; 66 union { 67 const char **a; 68 char * const *b; 69 } Argv; 70 71 Argc = 0; 72 Argv.a = malloc((argc + 1 + N_ARGS_PREPENDED) * sizeof *Argv.a); 73 if (Argv.a == NULL) 74 err(1, "malloc"); 75 Argv.a[Argc++] = argv[0]; 76 for (j = 0; j < N_ARGS_PREPENDED; ++j) 77 Argv.a[Argc++] = args_prepended[j]; 78 while ((i = getopt(argc, argv, "cD:EgI:l:L:o:OsU:")) != -1) { 79 if (i == '?') 80 usage(); 81 if (i == 'l') { 82 if (argv[optind - 1][0] == '-') /* -llib */ 83 optind -= 1; 84 else /* -l lib */ 85 optind -= 2; 86 break; /* -llib or -l lib starts the operands. */ 87 } 88 } 89 if (argc == optind) { 90 warnx("missing operand"); 91 usage(); 92 } 93 94 /* Append argv[1..] at the end of Argv[].a. */ 95 for (i = 1; i <= argc; ++i) 96 Argv.a[Argc++] = argv[i]; 97 (void)execv(CC, Argv.b); 98 err(1, "execv(" CC ")"); 99} 100 101static void 102usage(void) 103{ 104 fprintf(stderr, 105"usage: c89 [-cEgOs] [-D name[=value]] ... [-I directory] ... [-L directory] ...\n" 106" [-o outfile] [-U name] ... operand ...\n" 107"\n" 108" where operand is one or more of file.c, file.o, file.a\n" 109" or -llibrary\n"); 110 exit(1); 111} 112