98 lines
3.1 KiB
C
98 lines
3.1 KiB
C
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/* $NetBSD: findcc.c,v 1.1 2002/06/14 23:14:18 simonb Exp $ */
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/*-
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* Copyright (c) 1999 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Matthias Scheler.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#if defined(__COPYRIGHT) && !defined(lint)
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__COPYRIGHT("@(#) Copyright (c) 1999 The NetBSD Foundation, Inc.\n\
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All rights reserved.\n");
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#endif /* not lint */
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#if defined(__RCSID) && !defined(lint)
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__RCSID("$NetBSD: findcc.c,v 1.1 2002/06/14 23:14:18 simonb Exp $");
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#endif /* not lint */
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#if HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <sys/param.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "findcc.h"
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char *
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findcc(progname)
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const char *progname;
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{
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char *path, *dir, *next;
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char buffer[MAXPATHLEN];
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if ((next = strchr(progname, ' ')) != NULL) {
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*next = '\0';
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}
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if (strchr(progname, '/') != NULL)
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return access(progname, X_OK) ? NULL : strdup(progname);
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if (((path = getenv("PATH")) == NULL) ||
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((path = strdup(path)) == NULL))
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return NULL;
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dir = path;
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while (dir != NULL) {
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if ((next = strchr(dir, ':')) != NULL)
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*next++ = '\0';
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if (snprintf(buffer, sizeof(buffer),
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"%s/%s", dir, progname) < sizeof(buffer)) {
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if (!access(buffer, X_OK)) {
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free(path);
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return strdup(buffer);
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}
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}
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dir = next;
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}
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free(path);
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return NULL;
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}
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