+ * Copyright (c) 1999-2002 Paul Mackerras. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * 2. The name(s) of the authors of this software must not be used to
+ * endorse or promote products derived from this software without
+ * prior written permission.
+ *
+ * 3. Redistributions of any form whatsoever must retain the following
+ * acknowledgment:
+ * "This product includes software developed by Paul Mackerras
+ * <paulus@samba.org>".
+ *
+ * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO
+ * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
+ * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
+ * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * Paths are controlled by configure. Typically, one would pass the following options
+ * to configure:
+ * ./configure --prefix=/usr --sysconfdir=/etc --localstatedir=/var
+ *
+ * Note that if the prefix variable do control all the other directory variables, e.g
+ * sysconfdir is ${prefix}/etc. Setting prefix to /usr, you'll have to override
+ * sysconfdir with /etc to avoid installing config files into /usr/etc.
+ *
+ * In addition, there are three explicit variables that has overrides via configure:
+ * - PPPD_RUNTIME_DIR, set by --with-runtime-dir=<dir>
+ * - PPPD_LOGFILE_DIR, set by --with-logfile-dir=<dir>
+ * - PPPD_PLUGIN_DIR, set by --with-plugin-dir=<dir>
+ */
+#ifndef PPP_PATHNAMES_H
+#define PPP_PATHNAMES_H
+
+#include "pppdconf.h"
+
+#ifdef HAVE_PATHS_H
+#include <paths.h>
+#endif /* HAVE_PATHS_H */
+
+#ifndef _PATH_DEVNULL
+#define _PATH_DEVNULL "/dev/null"
+#endif
+
+#define PPP_DEVNULL _PATH_DEVNULL
+
+/*
+ * PPPD_RUNTIME_DIR is set by passing --with-runtime-dir=<path> via configure
+ * the default value set by configure when option is absent is ${localstatedir}/run/pppd
+ */
+#ifdef PPPD_RUNTIME_DIR
+#define PPP_PATH_VARRUN PPPD_RUNTIME_DIR
+#else
+#define PPP_PATH_VARRUN _PATH_VARRUN
+#endif
+
+/*
+ * PPPD_LOGFILE_DIR is set by passing --with-logfile-dir=<path> via configure
+ * the default value set by configure when option is absent is ${localstatedir}/log/ppp
+ */
+#ifdef PPPD_LOGFILE_DIR
+#define PPP_PATH_VARLOG PPPD_LOGFILE_DIR
+#else
+#define PPP_PATH_VARLOG _PATH_VARRUN "/log/ppp"
+#endif
+
+/*
+ * PPPD_PLUGIN_DIR is set by passing --with-plugin-dir=<path> via configure
+ * the default value set by configure when option is absent is ${libdir}/pppd/${version}