1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2002 Tim J. Robbins.
5 * All rights reserved.
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 AND CONTRIBUTORS ``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
29/*
30 * c99 -- compile standard C programs
31 *
32 * This is essentially a wrapper around the system C compiler that forces
33 * the compiler into C99 mode and handles some of the standard libraries
34 * specially.
35 */
36
37#include <sys/types.h>
38
39#include <err.h>
40#include <stdio.h>
41#include <stdlib.h>
42#include <string.h>
43#include <unistd.h>
44
45static char **args;
46static u_int cargs, nargs;
47
48static void addarg(const char *);
49static void addlib(const char *);
50static void usage(void) __dead2;
51
52int
53main(int argc, char *argv[])
54{
55	int ch, i;
56
57	args = NULL;
58	cargs = nargs = 0;
59
60	while ((ch = getopt(argc, argv, "cD:EgI:L:o:O:sU:l:")) != -1) {
61		if (ch == 'l') {
62			/* Gone too far. Back up and get out. */
63			if (argv[optind - 1][0] == '-')
64				optind -= 1;
65			else
66				optind -= 2;
67			break;
68		} else if (ch == '?')
69			usage();
70	}
71
72	addarg("/usr/bin/cc");
73	addarg("-std=iso9899:1999");
74	addarg("-pedantic");
75	for (i = 1; i < optind; i++)
76		addarg(argv[i]);
77	while (i < argc) {
78		if (strncmp(argv[i], "-l", 2) == 0) {
79			if (argv[i][2] != '\0')
80				addlib(argv[i++] + 2);
81			else {
82				if (argv[++i] == NULL)
83					usage();
84				addlib(argv[i++]);
85			}
86		} else
87			addarg(argv[i++]);
88	}
89	execv("/usr/bin/cc", args);
90	err(1, "/usr/bin/cc");
91}
92
93static void
94addarg(const char *item)
95{
96	if (nargs + 1 >= cargs) {
97		cargs += 16;
98		if ((args = realloc(args, sizeof(*args) * cargs)) == NULL)
99			err(1, "malloc");
100	}
101	if ((args[nargs++] = strdup(item)) == NULL)
102		err(1, "strdup");
103	args[nargs] = NULL;
104}
105
106static void
107addlib(const char *lib)
108{
109
110	if (strcmp(lib, "pthread") == 0)
111		/* FreeBSD's gcc uses -pthread instead of -lpthread. */
112		addarg("-pthread");
113	else if (strcmp(lib, "rt") == 0)
114		/* librt functionality is in libc or unimplemented. */
115		;
116	else if (strcmp(lib, "xnet") == 0)
117		/* xnet functionality is in libc. */
118		;
119	else {
120		addarg("-l");
121		addarg(lib);
122	}
123}
124
125static void
126usage(void)
127{
128	(void)fprintf(stderr, "%s\n%s\n",
129"usage: c99 [-cEgs] [-D name[=value]] ... [-I directory] ... [-L directory] ...",
130"       [-o outfile] [-O optlevel] [-U name] ... operand ...");
131	exit(1);
132}
133