1 /*- 2 * Copyright (c) 2004, The DragonFly Project. All rights reserved. 3 * Copyright (c) 1998, Peter Wemm <peter@netplex.com.au> 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 * $FreeBSD: src/usr.bin/objformat/objformat.c,v 1.6 1998/10/24 02:01:30 jdp Exp $ 28 */ 29 30 #include <sys/param.h> 31 32 #include <err.h> 33 #include <objformat.h> 34 #include <stdio.h> 35 #include <stdlib.h> 36 #include <string.h> 37 #include <unistd.h> 38 39 #ifndef CCVER_DEFAULT 40 #define CCVER_DEFAULT "gcc44" 41 #endif 42 43 #ifndef BINUTILSVER_DEFAULT 44 #define BINUTILSVER_DEFAULT "binutils221" 45 #endif 46 47 #ifndef LDVER_DEFAULT 48 #define LDVER_DEFAULT "bfd" 49 #endif 50 51 #ifndef OBJFORMAT_PATH_DEFAULT 52 #define OBJFORMAT_PATH_DEFAULT "" 53 #endif 54 55 enum cmd_type { OBJFORMAT, COMPILER, BINUTILS }; 56 57 struct command { 58 const char *cmd; 59 enum cmd_type type; 60 }; 61 62 static struct command commands[] = { 63 {"CC", COMPILER}, 64 {"c++", COMPILER}, 65 {"cc", COMPILER}, 66 {"cpp", COMPILER}, 67 {"g++", COMPILER}, 68 {"gcc", COMPILER}, 69 {"gcov", COMPILER}, 70 {"addr2line", BINUTILS}, 71 {"ar", BINUTILS}, 72 {"as", BINUTILS}, 73 {"c++filt", BINUTILS}, 74 {"elfedit", BINUTILS}, 75 {"ld", BINUTILS}, 76 {"nm", BINUTILS}, 77 {"objcopy", BINUTILS}, 78 {"objdump", BINUTILS}, 79 {"ranlib", BINUTILS}, 80 {"readelf", BINUTILS}, 81 {"size", BINUTILS}, 82 {"strings", BINUTILS}, 83 {"strip", BINUTILS}, 84 {"objformat", OBJFORMAT}, 85 {"", -1} 86 }; 87 88 int 89 main(int argc, char **argv) 90 { 91 struct command *cmds; 92 char objformat[32]; 93 char *path, *chunk; 94 char *cmd, *newcmd = NULL; 95 const char *objformat_path; 96 const char *ccver; 97 const char *buver; 98 const char *ldver; 99 const char *env_value = NULL; 100 const char *base_path = NULL; 101 int use_objformat = 0; 102 103 if (getobjformat(objformat, sizeof objformat, &argc, argv) == -1) 104 errx(1, "Invalid object format"); 105 106 /* 107 * Get the last path element of the program name being executed 108 */ 109 cmd = strrchr(argv[0], '/'); 110 if (cmd != NULL) 111 cmd++; 112 else 113 cmd = argv[0]; 114 115 for (cmds = commands; cmds < &commands[NELEM(commands) - 1]; ++cmds) { 116 if (strcmp(cmd, cmds->cmd) == 0) 117 break; 118 } 119 120 if ((ccver = getenv("CCVER")) == NULL || ccver[0] == 0) 121 ccver = CCVER_DEFAULT; 122 if ((buver = getenv("BINUTILSVER")) == NULL) 123 buver = BINUTILSVER_DEFAULT; 124 if ((ldver = getenv("LDVER")) == NULL) 125 ldver = LDVER_DEFAULT; 126 127 if (cmds) { 128 switch (cmds->type) { 129 case COMPILER: 130 base_path = "/usr/libexec"; 131 use_objformat = 0; 132 env_value = ccver; 133 break; 134 case BINUTILS: 135 base_path = "/usr/libexec"; 136 use_objformat = 1; 137 env_value = buver; 138 break; 139 case OBJFORMAT: 140 break; 141 default: 142 errx(1, "unknown command type"); 143 break; 144 } 145 } 146 147 /* 148 * The objformat command itself doesn't need another exec 149 */ 150 if (cmds->type == OBJFORMAT) { 151 if (argc != 1) { 152 fprintf(stderr, "Usage: objformat\n"); 153 exit(1); 154 } 155 156 printf("%s\n", objformat); 157 exit(0); 158 } 159 160 /* 161 * make buildworld glue and CCVER overrides. 162 */ 163 objformat_path = getenv("OBJFORMAT_PATH"); 164 if (objformat_path == NULL) 165 objformat_path = OBJFORMAT_PATH_DEFAULT; 166 167 again: 168 path = strdup(objformat_path); 169 170 if (setenv("OBJFORMAT", objformat, 1) == -1) 171 err(1, "setenv: cannot set OBJFORMAT=%s", objformat); 172 173 /* 174 * objformat_path could be sequence of colon-separated paths. 175 */ 176 while ((chunk = strsep(&path, ":")) != NULL) { 177 if (newcmd != NULL) { 178 free(newcmd); 179 newcmd = NULL; 180 } 181 if (use_objformat) { 182 printf("GOLD!\n"); 183 if (strcmp(cmd, "ld") == 0) { 184 asprintf(&newcmd, "%s%s/%s/%s/%s.%s", 185 chunk, base_path, env_value, objformat, 186 cmd, ldver); 187 } else { 188 asprintf(&newcmd, "%s%s/%s/%s/%s", 189 chunk, base_path, env_value, objformat, 190 cmd); 191 } 192 } else { 193 asprintf(&newcmd, "%s%s/%s/%s", 194 chunk, base_path, env_value, cmd); 195 } 196 if (newcmd == NULL) 197 err(1, "cannot allocate memory"); 198 199 argv[0] = newcmd; 200 execv(newcmd, argv); 201 } 202 203 /* 204 * Fallback: if we're searching for a compiler, but didn't 205 * find any, try again using the custom compiler driver. 206 */ 207 if (cmds && cmds->type == COMPILER && 208 strcmp(env_value, "custom") != 0) { 209 env_value = "custom"; 210 goto again; 211 } 212 213 if (use_objformat) { 214 err(1, "in path [%s]%s/%s/%s/%s", 215 objformat_path, base_path, env_value, objformat, cmd); 216 } else { 217 err(1, "in path [%s]%s/%s/%s", 218 objformat_path, base_path, env_value, cmd); 219 } 220 } 221