c89.c revision 87258
176378Sschweikh/*- 276378Sschweikh * This is the Posix.2 mandated C compiler. Basically, a hook to the 376378Sschweikh * cc(1) command. 476378Sschweikh * 576378Sschweikh * Copyright (c) 2001 by Jens Schweikhardt 676378Sschweikh * 776378Sschweikh * Redistribution and use in source and binary forms, with or without 876378Sschweikh * modification, are permitted provided that the following conditions 976378Sschweikh * are met: 1076378Sschweikh * 1. Redistributions of source code must retain the above copyright 1176378Sschweikh * notice, this list of conditions and the following disclaimer. 1276378Sschweikh * 2. Redistributions in binary form must reproduce the above copyright 1376378Sschweikh * notice, this list of conditions and the following disclaimer in the 1476378Sschweikh * documentation and/or other materials provided with the distribution. 1576378Sschweikh * 1676378Sschweikh * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND 1776378Sschweikh * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1876378Sschweikh * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1976378Sschweikh * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 2076378Sschweikh * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2176378Sschweikh * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2276378Sschweikh * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2376378Sschweikh * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2476378Sschweikh * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2576378Sschweikh * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2676378Sschweikh * SUCH DAMAGE. 2776378Sschweikh * 2876378Sschweikh */ 2976378Sschweikh 3087258Smarkm#include <sys/cdefs.h> 3187258Smarkm 3287258Smarkm__FBSDID("$FreeBSD: head/usr.bin/c89/c89.c 87258 2001-12-03 01:15:28Z markm $"); 3387258Smarkm 3476378Sschweikh#include <err.h> 3576378Sschweikh#include <stdio.h> 3676378Sschweikh#include <stdlib.h> 3776378Sschweikh#include <string.h> 3876378Sschweikh 3976378Sschweikh#include <unistd.h> 4076378Sschweikh 4176378Sschweikh#define CC "/usr/bin/cc" /* The big kahuna doing the actual work. */ 4276378Sschweikh#define N_ARGS_PREPENDED (sizeof(args_prepended) / sizeof(args_prepended[0])) 4376378Sschweikh 4476378Sschweikh/* 4576378Sschweikh * We do not add -D_POSIX_SOURCE here because any POSIX source is supposed to 4676378Sschweikh * define it before inclusion of POSIX headers. This has the additional 4776378Sschweikh * benefit of making c89 -D_ANSI_SOURCE do the right thing (or any other 4876378Sschweikh * -D_FOO_SOURCE feature test macro we support.) 4976378Sschweikh */ 5087210Smarkmstatic const char *args_prepended[] = { 5176378Sschweikh "-std=iso9899:199409", 5276378Sschweikh "-pedantic" 5376378Sschweikh}; 5476378Sschweikh 5576378Sschweikhstatic void usage(void); 5676378Sschweikh 5776378Sschweikh/* 5876378Sschweikh * Prepend the strings from args_prepended[] to the arg list; parse options, 5976378Sschweikh * accepting only the POSIX c89 mandated options. Then exec cc to do the 6076378Sschweikh * actual work. 6176378Sschweikh */ 6276378Sschweikhint 6376378Sschweikhmain(int argc, char **argv) 6476378Sschweikh{ 6576378Sschweikh int Argc, i; 6687210Smarkm size_t j; 6787210Smarkm union { 6887210Smarkm const char **a; 6987210Smarkm char * const *b; 7087210Smarkm } Argv; 7176378Sschweikh 7276378Sschweikh Argc = 0; 7387210Smarkm Argv.a = malloc((argc + 1 + N_ARGS_PREPENDED) * sizeof *Argv.a); 7487210Smarkm if (Argv.a == NULL) 7576378Sschweikh err(1, "malloc"); 7687210Smarkm Argv.a[Argc++] = argv[0]; 7787210Smarkm for (j = 0; j < N_ARGS_PREPENDED; ++j) 7887210Smarkm Argv.a[Argc++] = args_prepended[j]; 7976378Sschweikh while ((i = getopt(argc, argv, "cD:EgI:l:L:o:OsU:")) != -1) { 8076378Sschweikh if (i == '?') 8176378Sschweikh usage(); 8276378Sschweikh if (i == 'l') { 8376378Sschweikh if (argv[optind - 1][0] == '-') /* -llib */ 8476378Sschweikh optind -= 1; 8576378Sschweikh else /* -l lib */ 8676378Sschweikh optind -= 2; 8776378Sschweikh break; /* -llib or -l lib starts the operands. */ 8876378Sschweikh } 8976378Sschweikh } 9076378Sschweikh if (argc == optind) { 9176378Sschweikh warnx("missing operand"); 9276378Sschweikh usage(); 9376378Sschweikh } 9476378Sschweikh 9587210Smarkm /* Append argv[1..] at the end of Argv[].a. */ 9676378Sschweikh for (i = 1; i <= argc; ++i) 9787210Smarkm Argv.a[Argc++] = argv[i]; 9887210Smarkm (void)execv(CC, Argv.b); 9976378Sschweikh err(1, "execv(" CC ")"); 10076378Sschweikh} 10176378Sschweikh 10276378Sschweikhstatic void 10376378Sschweikhusage(void) 10476378Sschweikh{ 10576378Sschweikh fprintf(stderr, 10676378Sschweikh"usage: c89 [-c] [-D name[=value]] [...] [-E] [-g] [-I directory ...]\n" 10776378Sschweikh" [-L directory ...] [-o outfile] [-O] [-s] [-U name ...] operand ...\n" 10876378Sschweikh"\n" 10976378Sschweikh" where operand is one or more of file.c, file.o, file.a\n" 11076378Sschweikh" or -llibrary\n"); 11176378Sschweikh exit(1); 11276378Sschweikh} 113