#!/bin/sh
# $Id: makedepend.SH,v 3.0 1991/09/09 20:23:31 davison Trn $
# 
# This software is Copyright 1991 by Stan Barber. 
#
# Permission is hereby granted to copy, reproduce, redistribute or otherwise
# use this software as long as: there is no monetary profit gained
# specifically from the use or reproduction of this software, it is not
# sold, rented, traded or otherwise marketed, and this copyright notice is
# included prominently in any copy made. 
#
# The author make no claims as to the fitness or correctness of this software
# for any use whatsoever, and it is provided as is. Any use of this software
# is at the user's own risk. 
export PATH || (echo "OOPS, this isn't sh.  Desperation time.  I will feed myself to sh."; sh $0; kill $$)

cat /dev/null >.deptmp
echo "(Note: this is going to take a while.)"
for file in *.[cy]; do
    case "$file" in
    *.c) filebase=`basename $file .c`;;
    *.y) filebase=`basename $file .y`;;
    esac
    echo "Finding dependencies for $filebase.o."
    sed -n <$file \
	-e "/^${filebase}_init(/q" \
	-e '/^#/{' \
	-e 's|/\*.*$||' \
	-e 's/\\[ 	]*$//' \
	-e p \
	-e '}' | cppstdin -I/usr/local/include | sed \
	-e '/^# *line/s/line//' 	-e '/^# *[0-9]/!d' \
	-e 's/^.*"\(.*\)".*$/'$filebase'.o: \1/' \
	-e 's|: \./|: |' \
	-e 's/: .*\.c/: '$file'/' | \
	uniq | sort | uniq >> .deptmp
done

for file in *.SH; do
    echo `basename $file .SH`: $file config.sh \; /bin/sh $file >> .deptmp
done

sed <Makefile >Makefile.new -e '1,/^# AUTOMATICALLY/!d'

if /bin/test -s .deptmp; then
    echo "Updating Makefile..."
    sed -e 's/\$/$$/g' .deptmp | /usr/bin/egrep -v /usr/include >dependencies
else
    echo "You don't seem to have a proper C preprocessor.  Using grep instead."
    /usr/bin/egrep '^#include ' *.[cyh] ?.[cyh] >.deptmp
    echo "Updating Makefile..."
    <.deptmp sed -n 's|c:#include "\(.*\)".*$$|o: \1|p' > dependencies
    <.deptmp sed -n 's|y:#include "\(.*\)".*$$|o: \1|p' >> dependencies
    <.deptmp sed -n 's|h:#include "\(.*\)".*$$|h: \1|p' >> dependencies
fi
echo "# WARNING: Put nothing here or make depend will gobble it up!" >> dependencies
mv Makefile Makefile.old
mv Makefile.new Makefile
cat dependencies >>Makefile
rm .deptmp