1 /*- 2 * Copyright (c) 1998, Peter Wemm <peter@netplex.com.au> 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 * $FreeBSD: src/usr.bin/objformat/objformat.c,v 1.6 1998/10/24 02:01:30 jdp Exp $ 27 * $DragonFly: src/usr.bin/objformat/objformat.c,v 1.5 2004/01/23 22:30:25 joerg Exp $ 28 */ 29 30 #include <err.h> 31 #include <objformat.h> 32 #include <stdio.h> 33 #include <stdlib.h> 34 #include <string.h> 35 #include <unistd.h> 36 37 #define OBJFORMAT 0 38 #define COMPILER 1 39 #define BINUTILS 2 40 41 struct command { 42 const char *cmd; 43 int type; 44 }; 45 46 static struct command commands[] = { 47 {"CC", COMPILER}, 48 {"c++", COMPILER}, 49 {"c++filt", COMPILER}, 50 {"cc", COMPILER}, 51 {"cpp", COMPILER}, 52 {"f77", COMPILER}, 53 {"g++", COMPILER}, 54 {"gcc", COMPILER}, 55 {"gcov", COMPILER}, 56 {"addr2line", BINUTILS}, 57 {"ar", BINUTILS}, 58 {"as", BINUTILS}, 59 {"gasp", BINUTILS}, 60 {"gdb", BINUTILS}, 61 {"ld", BINUTILS}, 62 {"nm", BINUTILS}, 63 {"objcopy", BINUTILS}, 64 {"objdump", BINUTILS}, 65 {"ranlib", BINUTILS}, 66 {"size", BINUTILS}, 67 {"strings", BINUTILS}, 68 {"strip", BINUTILS}, 69 {"objformat", OBJFORMAT}, 70 {0, 0} 71 }; 72 73 int 74 main(int argc, char **argv) 75 { 76 struct command *cmds = commands; 77 char objformat[32]; 78 char *path, *chunk; 79 char *cmd, *newcmd = NULL; 80 char *objformat_path; 81 const char *env_name = NULL; 82 const char *env_value; 83 const char *env_default = NULL; 84 const char *base_path = NULL; 85 int use_objformat = 0; 86 87 if (getobjformat(objformat, sizeof objformat, &argc, argv) == -1) 88 errx(1, "Invalid object format"); 89 90 /* 91 * Get the last path elemenet of the program name being executed 92 */ 93 cmd = strrchr(argv[0], '/'); 94 if (cmd != NULL) 95 cmd++; 96 else 97 cmd = argv[0]; 98 99 for (;cmds->cmd; cmds++) 100 if (strcmp(cmd, cmds->cmd) == 0) 101 { 102 switch (cmds->type) 103 { 104 case COMPILER: 105 env_name = "CCVER"; 106 env_default = "gcc2"; 107 base_path = "/usr/bin"; 108 use_objformat = 0; 109 break; 110 case BINUTILS: 111 env_name = "BINUTILSVER"; 112 env_default = "gcc2"; 113 base_path = "/usr/libexec"; 114 use_objformat = 1; 115 break; 116 case OBJFORMAT: 117 break; 118 default: 119 err(1, "unknown command type"); 120 } 121 break; 122 } 123 124 /* 125 * The objformat command itself doesn't need another exec 126 */ 127 if (cmds->type == OBJFORMAT) { 128 if (argc != 1) { 129 fprintf(stderr, "Usage: objformat\n"); 130 exit(1); 131 } 132 133 printf("%s\n", objformat); 134 exit(0); 135 } 136 137 /* 138 * make buildworld glue and CCVER overrides. 139 */ 140 objformat_path = getenv("OBJFORMAT_PATH"); 141 if (objformat_path == NULL) 142 objformat_path = ""; 143 144 if ((env_value = getenv(env_name)) == NULL) 145 env_value = env_default; 146 147 path = strdup(objformat_path); 148 149 setenv("OBJFORMAT", objformat, 1); 150 151 /* 152 * objformat_path could be sequence of colon-separated paths. 153 */ 154 while ((chunk = strsep(&path, ":")) != NULL) { 155 if (newcmd != NULL) { 156 free(newcmd); 157 newcmd = NULL; 158 } 159 if (use_objformat) 160 asprintf(&newcmd, "%s%s/%s/%s/%s", 161 chunk, base_path, env_value, objformat, cmd); 162 else 163 asprintf(&newcmd, "%s%s/%s/%s", 164 chunk, base_path, env_value, cmd); 165 if (newcmd == NULL) 166 err(1, "cannot allocate memory"); 167 168 argv[0] = newcmd; 169 execv(newcmd, argv); 170 } 171 if (use_objformat) 172 err(1, "in path [%s]%s/%s/%s/%s", 173 objformat_path, base_path, env_value, objformat, cmd); 174 else 175 err(1, "in path [%s]%s/%s/%s", 176 objformat_path, base_path, env_value, cmd); 177 } 178 179