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 "binutils222" 45 #endif 46 47 #ifndef OBJFORMAT_PATH_DEFAULT 48 #define OBJFORMAT_PATH_DEFAULT "" 49 #endif 50 51 enum cmd_type { OBJFORMAT, COMPILER, BINUTILS }; 52 53 struct command { 54 const char *cmd; 55 enum cmd_type type; 56 }; 57 58 static struct command commands[] = { 59 {"CC", COMPILER}, 60 {"c++", COMPILER}, 61 {"cc", COMPILER}, 62 {"cpp", COMPILER}, 63 {"g++", COMPILER}, 64 {"gcc", COMPILER}, 65 {"gcov", COMPILER}, 66 {"addr2line", BINUTILS}, 67 {"ar", BINUTILS}, 68 {"as", BINUTILS}, 69 {"c++filt", BINUTILS}, 70 {"elfedit", BINUTILS}, 71 {"gprof", BINUTILS}, 72 {"ld", BINUTILS}, 73 {"nm", BINUTILS}, 74 {"objcopy", BINUTILS}, 75 {"objdump", BINUTILS}, 76 {"ranlib", BINUTILS}, 77 {"readelf", BINUTILS}, 78 {"size", BINUTILS}, 79 {"strings", BINUTILS}, 80 {"strip", BINUTILS}, 81 {"incremental-dump", BINUTILS}, 82 {"objformat", OBJFORMAT}, 83 {"", -1} 84 }; 85 86 int 87 main(int argc, char **argv) 88 { 89 struct command *cmds; 90 char objformat[32]; 91 char *path, *chunk; 92 char *cmd, *newcmd = NULL; 93 const char *objformat_path; 94 const char *ccver; 95 const char *buver; 96 const char *env_value = NULL; 97 const char *base_path = NULL; 98 int use_objformat = 0; 99 100 if (getobjformat(objformat, sizeof objformat, &argc, argv) == -1) 101 errx(1, "Invalid object format"); 102 103 /* 104 * Get the last path element of the program name being executed 105 */ 106 cmd = strrchr(argv[0], '/'); 107 if (cmd != NULL) 108 cmd++; 109 else 110 cmd = argv[0]; 111 112 for (cmds = commands; cmds < &commands[NELEM(commands) - 1]; ++cmds) { 113 if (strcmp(cmd, cmds->cmd) == 0) 114 break; 115 } 116 117 if ((ccver = getenv("CCVER")) == NULL || ccver[0] == 0) 118 ccver = CCVER_DEFAULT; 119 if ((buver = getenv("BINUTILSVER")) == NULL) { 120 buver = BINUTILSVER_DEFAULT; 121 } 122 123 if (cmds) { 124 switch (cmds->type) { 125 case COMPILER: 126 base_path = "/usr/libexec"; 127 use_objformat = 0; 128 env_value = ccver; 129 break; 130 case BINUTILS: 131 base_path = "/usr/libexec"; 132 use_objformat = 1; 133 env_value = buver; 134 break; 135 case OBJFORMAT: 136 break; 137 default: 138 errx(1, "unknown command type"); 139 break; 140 } 141 } 142 143 /* 144 * The objformat command itself doesn't need another exec 145 */ 146 if (cmds->type == OBJFORMAT) { 147 if (argc != 1) { 148 fprintf(stderr, "Usage: objformat\n"); 149 exit(1); 150 } 151 152 printf("%s\n", objformat); 153 exit(0); 154 } 155 156 /* 157 * make buildworld glue and CCVER overrides. 158 */ 159 objformat_path = getenv("OBJFORMAT_PATH"); 160 if (objformat_path == NULL) 161 objformat_path = OBJFORMAT_PATH_DEFAULT; 162 163 again: 164 path = strdup(objformat_path); 165 166 if (setenv("OBJFORMAT", objformat, 1) == -1) 167 err(1, "setenv: cannot set OBJFORMAT=%s", objformat); 168 169 /* 170 * objformat_path could be sequence of colon-separated paths. 171 */ 172 while ((chunk = strsep(&path, ":")) != NULL) { 173 if (newcmd != NULL) { 174 free(newcmd); 175 newcmd = NULL; 176 } 177 if (use_objformat) { 178 asprintf(&newcmd, "%s%s/%s/%s/%s", 179 chunk, base_path, env_value, objformat, cmd); 180 } else { 181 asprintf(&newcmd, "%s%s/%s/%s", 182 chunk, base_path, env_value, cmd); 183 } 184 if (newcmd == NULL) 185 err(1, "cannot allocate memory"); 186 187 argv[0] = newcmd; 188 execv(newcmd, argv); 189 } 190 191 /* 192 * Fallback: if we're searching for a compiler, but didn't 193 * find any, try again using the custom compiler driver. 194 */ 195 if (cmds && cmds->type == COMPILER && 196 strcmp(env_value, "custom") != 0) { 197 env_value = "custom"; 198 goto again; 199 } 200 201 if (use_objformat) { 202 err(1, "in path [%s]%s/%s/%s/%s", 203 objformat_path, base_path, env_value, objformat, cmd); 204 } else { 205 err(1, "in path [%s]%s/%s/%s", 206 objformat_path, base_path, env_value, cmd); 207 } 208 } 209