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/12/usr.bin/c99/c99.c 326276 2017-11-27 15:37:16Z pfg $");
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
48 static char **args;
49 static u_int cargs, nargs;
50
51 static void addarg(const char *);
52 static void addlib(const char *);
53 static void usage(void);
54
55 int
main(int argc,char * argv[])56 main(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
96 static void
addarg(const char * item)97 addarg(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
109 static void
addlib(const char * lib)110 addlib(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
128 static void
usage(void)129 usage(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