1 /* $NetBSD: findcc.c,v 1.1 2002/06/14 23:14:18 simonb Exp $ */ 2 3 /*- 4 * Copyright (c) 1999 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Matthias Scheler. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <sys/cdefs.h> 40 #if defined(__COPYRIGHT) && !defined(lint) 41 __COPYRIGHT("@(#) Copyright (c) 1999 The NetBSD Foundation, Inc.\n\ 42 All rights reserved.\n"); 43 #endif /* not lint */ 44 45 #if defined(__RCSID) && !defined(lint) 46 __RCSID("$NetBSD: findcc.c,v 1.1 2002/06/14 23:14:18 simonb Exp $"); 47 #endif /* not lint */ 48 49 #if HAVE_CONFIG_H 50 #include "config.h" 51 #endif 52 53 #include <sys/param.h> 54 #include <stdio.h> 55 #include <stdlib.h> 56 #include <string.h> 57 #include <unistd.h> 58 59 #include "findcc.h" 60 61 char * 62 findcc(progname) 63 const char *progname; 64 { 65 char *path, *dir, *next; 66 char buffer[MAXPATHLEN]; 67 68 if ((next = strchr(progname, ' ')) != NULL) { 69 *next = '\0'; 70 } 71 72 if (strchr(progname, '/') != NULL) 73 return access(progname, X_OK) ? NULL : strdup(progname); 74 75 if (((path = getenv("PATH")) == NULL) || 76 ((path = strdup(path)) == NULL)) 77 return NULL; 78 79 dir = path; 80 while (dir != NULL) { 81 if ((next = strchr(dir, ':')) != NULL) 82 *next++ = '\0'; 83 84 if (snprintf(buffer, sizeof(buffer), 85 "%s/%s", dir, progname) < sizeof(buffer)) { 86 if (!access(buffer, X_OK)) { 87 free(path); 88 return strdup(buffer); 89 } 90 } 91 dir = next; 92 } 93 94 free(path); 95 return NULL; 96 } 97 98