--- /dev/null
+#!/bin/sh
+
+# This script modifies the kernel sources in /sys to install
+# ppp-2.2. It is intended to be run in the ppp-2.2 directory.
+#
+# Paul Mackerras 11-Dec-95
+
+ARCH=$(uname -m)
+CONF=$(uname -v | sed 's/.*(\(.*\)).*/\1/')
+SYS=/sys
+ARCHDIR=$SYS/arch/$ARCH
+CFILE=$ARCHDIR/conf/$CONF
+SRC=netbsd-1.1
+DOCONF=
+DOMAKE=
+
+# Work out whether to use config or config.old
+if grep -q timezone $CFILE; then
+ CONFIG=config.old
+else
+ CONFIG=config
+fi
+
+# Copy new versions of files into /sys/net
+
+for f in net/if_ppp.h net/ppp-comp.h net/ppp_defs.h $SRC/bsd-comp.c \
+ $SRC/if_ppp.c $SRC/if_pppvar.h $SRC/ppp_tty.c \
+ $SRC/slcompress.c $SRC/slcompress.h; do
+ dest=$SYS/net/$(basename $f)
+ if [ -f $dest ]; then
+ if ! cmp -s $f $dest; then
+ echo "Copying $f to $dest"
+ mv -f $dest $dest.orig
+ echo " (old version saved in $dest.orig)"
+ cp $f $dest
+ DOMAKE=yes
+ fi
+ else
+ echo "Copying $f to $dest"
+ cp $f $dest
+ DOMAKE=yes
+ fi
+done
+
+# Tell the user to add a pseudo-device line to the configuration file
+# and remake the kernel, if necessary.
+
+if [ -f $CFILE ]; then
+ if ! grep -q '^[ ]*pseudo-device[ ][ ]*ppp' $CFILE; then
+ echo
+ echo "The currently-running kernel was built from configuration file"
+ echo "$CFILE, which does not include PPP."
+ echo "You need either to add a line like 'pseudo-device ppp 2' to"
+ echo "this file, or use another configuration file which includes"
+ echo "a line like this."
+ DOCONF=yes
+ fi
+fi
+
+if [ $DOCONF ]; then
+ echo
+ echo "You need to configure and build a new kernel."
+ echo "The procedure for doing this involves the following commands."
+ echo "(\"$CONF\" may be replaced by the name of another config file.)"
+ echo
+ echo " cd $ARCHDIR/conf"
+ echo " /usr/sbin/$CONFIG $CONF"
+ echo " cd ../compile/$CONF"
+ echo " make depend"
+ DOMAKE=yes
+elif [ $DOMAKE ]; then
+ echo "You need to build a new kernel."
+ echo "The procedure for doing this involves the following commands."
+ echo
+ echo " cd $ARCHDIR/compile/$CONF"
+fi
+if [ $DOMAKE ]; then
+ echo " make"
+ echo
+ echo "Then copy the new kernel ($ARCHDIR/compile/$CONF/netbsd)"
+ echo "to /netbsd and reboot. (Keep a copy of the old /netbsd,"
+ echo "just in case.)"
+fi