xref: /freebsd/usr.bin/c99/c99.c (revision 74bf4e164ba5851606a27d4feff27717452583e5)
1 /*-
2  * Copyright (c) 2002 Tim J. Robbins.
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24  * SUCH DAMAGE.
25  */
26 
27 /*
28  * c99 -- compile standard C programs
29  *
30  * This is essentially a wrapper around the system C compiler that forces
31  * the compiler into C99 mode and handles some of the standard libraries
32  * specially.
33  */
34 
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
37 
38 #include <sys/types.h>
39 
40 #include <err.h>
41 #include <stdio.h>
42 #include <stdlib.h>
43 #include <string.h>
44 #include <unistd.h>
45 
46 char **args;
47 u_int cargs, nargs;
48 
49 void addarg(const char *);
50 void addlib(const char *);
51 void usage(void);
52 
53 int
54 main(int argc, char *argv[])
55 {
56 	int ch, i;
57 
58 	args = NULL;
59 	cargs = nargs = 0;
60 
61 	while ((ch = getopt(argc, argv, "cD:EgI:L:o:O:sU:l:")) != -1) {
62 		if (ch == 'l') {
63 			/* Gone too far. Back up and get out. */
64 			if (argv[optind - 1][0] == '-')
65 				optind -= 1;
66 			else
67 				optind -= 2;
68 			break;
69 		} else if (ch == '?')
70 			usage();
71 	}
72 
73 	addarg("cc");
74 	addarg("-std=iso9899:1999");
75 	addarg("-pedantic");
76 	for (i = 1; i < optind; i++)
77 		addarg(argv[i]);
78 	while (i < argc) {
79 		if (strncmp(argv[i], "-l", 2) == 0) {
80 			if (argv[i][2] != '\0')
81 				addlib(argv[i++] + 2);
82 			else {
83 				if (argv[++i] == NULL)
84 					usage();
85 				addlib(argv[i++]);
86 			}
87 		} else
88 			addarg(argv[i++]);
89 	}
90 	execv("/usr/bin/cc", args);
91 	err(1, "/usr/bin/cc");
92 }
93 
94 void
95 addarg(const char *item)
96 {
97 	if (nargs + 1 > cargs) {
98 		cargs += 16;
99 		if ((args = realloc(args, sizeof(*args) * cargs)) == NULL)
100 			err(1, "malloc");
101 	}
102 	if ((args[nargs++] = strdup(item)) == NULL)
103 		err(1, "strdup");
104 	args[nargs] = NULL;
105 }
106 
107 void
108 addlib(const char *lib)
109 {
110 
111 	if (strcmp(lib, "pthread") == 0)
112 		/* FreeBSD's gcc uses -pthread instead of -lpthread. */
113 		addarg("-pthread");
114 	else if (strcmp(lib, "rt") == 0)
115 		/* librt functionality is in libc or unimplemented. */
116 		;
117 	else if (strcmp(lib, "xnet") == 0)
118 		/* xnet functionality is in libc. */
119 		;
120 	else {
121 		addarg("-l");
122 		addarg(lib);
123 	}
124 }
125 
126 void
127 usage(void)
128 {
129 	fprintf(stderr,
130 "usage: c99 [-cEgs] [-D name[=value]] [-I directory] ... [-L directory] ...\n");
131 	fprintf(stderr,
132 "       [-o outfile] [-O optlevel] [-U name]... operand ...\n");
133 	exit(1);
134 }
135