1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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/cdefs.h>
38__FBSDID("$FreeBSD: stable/11/usr.bin/c99/c99.c 330449 2018-03-05 07:26:05Z eadler $");
39
40#include <sys/types.h>
41
42#include <err.h>
43#include <stdio.h>
44#include <stdlib.h>
45#include <string.h>
46#include <unistd.h>
47
48static char **args;
49static u_int cargs, nargs;
50
51static void addarg(const char *);
52static void addlib(const char *);
53static void usage(void);
54
55int
56main(int argc, char *argv[])
57{
58	int ch, i;
59
60	args = NULL;
61	cargs = nargs = 0;
62
63	while ((ch = getopt(argc, argv, "cD:EgI:L:o:O:sU:l:")) != -1) {
64		if (ch == 'l') {
65			/* Gone too far. Back up and get out. */
66			if (argv[optind - 1][0] == '-')
67				optind -= 1;
68			else
69				optind -= 2;
70			break;
71		} else if (ch == '?')
72			usage();
73	}
74
75	addarg("/usr/bin/cc");
76	addarg("-std=iso9899:1999");
77	addarg("-pedantic");
78	for (i = 1; i < optind; i++)
79		addarg(argv[i]);
80	while (i < argc) {
81		if (strncmp(argv[i], "-l", 2) == 0) {
82			if (argv[i][2] != '\0')
83				addlib(argv[i++] + 2);
84			else {
85				if (argv[++i] == NULL)
86					usage();
87				addlib(argv[i++]);
88			}
89		} else
90			addarg(argv[i++]);
91	}
92	execv("/usr/bin/cc", args);
93	err(1, "/usr/bin/cc");
94}
95
96static void
97addarg(const char *item)
98{
99	if (nargs + 1 >= cargs) {
100		cargs += 16;
101		if ((args = realloc(args, sizeof(*args) * cargs)) == NULL)
102			err(1, "malloc");
103	}
104	if ((args[nargs++] = strdup(item)) == NULL)
105		err(1, "strdup");
106	args[nargs] = NULL;
107}
108
109static void
110addlib(const char *lib)
111{
112
113	if (strcmp(lib, "pthread") == 0)
114		/* FreeBSD's gcc uses -pthread instead of -lpthread. */
115		addarg("-pthread");
116	else if (strcmp(lib, "rt") == 0)
117		/* librt functionality is in libc or unimplemented. */
118		;
119	else if (strcmp(lib, "xnet") == 0)
120		/* xnet functionality is in libc. */
121		;
122	else {
123		addarg("-l");
124		addarg(lib);
125	}
126}
127
128static void
129usage(void)
130{
131	(void)fprintf(stderr, "%s\n%s\n",
132"usage: c99 [-cEgs] [-D name[=value]] ... [-I directory] ... [-L directory] ...",
133"       [-o outfile] [-O optlevel] [-U name] ... operand ...");
134	exit(1);
135}
136