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 1.3 2004/01/16 07:45:22 dillon 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 int 38 main(int argc, char **argv) 39 { 40 char objformat[32]; 41 char *path, *chunk; 42 char *cmd, *newcmd = NULL; 43 char *objformat_path; 44 char *gccver; 45 char *dirprefix; 46 char *dirpostfix; 47 48 if (getobjformat(objformat, sizeof objformat, &argc, argv) == -1) 49 errx(1, "Invalid object format"); 50 51 /* 52 * Get the last path elemenet of the program name being executed 53 */ 54 cmd = strrchr(argv[0], '/'); 55 if (cmd != NULL) 56 cmd++; 57 else 58 cmd = argv[0]; 59 60 /* 61 * Directory prefix 62 */ 63 if (strcmp(cmd, "c++") == 0 || 64 strcmp(cmd, "cc") == 0 || 65 strcmp(cmd, "cpp") == 0 || 66 strcmp(cmd, "f77") == 0 || 67 strcmp(cmd, "g++") == 0 || 68 strcmp(cmd, "gcc") == 0 || 69 strcmp(cmd, "gcov") == 0 70 ) { 71 dirprefix = "/usr/bin"; 72 dirpostfix = ""; 73 } else { 74 dirprefix = "/usr/libexec"; 75 asprintf(&dirpostfix, "/%s", objformat); 76 } 77 78 /* 79 * The objformat command itself doesn't need another exec 80 */ 81 if (strcmp(cmd, "objformat") == 0) { 82 if (argc != 1) { 83 fprintf(stderr, "Usage: objformat\n"); 84 exit(1); 85 } 86 printf("%s\n", objformat); 87 exit(0); 88 } 89 90 /* 91 * make buildweorld glue and GCCVER overrides. 92 */ 93 objformat_path = getenv("OBJFORMAT_PATH"); 94 if (objformat_path == NULL) 95 objformat_path = ""; 96 if ((gccver = getenv("GCCVER")) == NULL) { 97 gccver = "gcc2"; 98 } else if (gccver[0] >= '0' && gccver[0] <= '9') { 99 asprintf(&gccver, "gcc%s", gccver); 100 } 101 path = strdup(objformat_path); 102 103 setenv("OBJFORMAT", objformat, 1); 104 105 /* 106 * objformat_path could be sequence of colon-separated paths. 107 */ 108 while ((chunk = strsep(&path, ":")) != NULL) { 109 if (newcmd != NULL) { 110 free(newcmd); 111 newcmd = NULL; 112 } 113 asprintf(&newcmd, "%s%s/%s%s/%s", 114 chunk, dirprefix, gccver, dirpostfix, cmd); 115 if (newcmd == NULL) 116 err(1, "cannot allocate memory"); 117 118 argv[0] = newcmd; 119 execv(newcmd, argv); 120 } 121 err(1, "in path [%s]%s/%s%s/%s", 122 objformat_path, dirprefix, gccver, dirpostfix, cmd); 123 } 124 125