#!/bin/sh
#
# add dependency info from files on command line to $depfile

depfile="Makedepends"

dependencies=""
targets="^$"

# tmp directory
if test -z "$TMP"; then TMP=/tmp; fi

while [ -n "$*" ]; do
    case "$1" in
      -f)
	depfile=$2
	shift
	shift
	;;
      -*)
	echo "usage: $0 [-f <makefile>] <dependency-file> ..."
	exit 1
	;;
      *)
	break
    esac
done

# collect all dependencies
while [ -n "$*" ]; do
    line=`cat $1 | sed -e 's/\\\\//g' | sed -e 's/ \/[^ ]*//g'`
    target=`echo $line | sed -e 's/^\([^:]*\):.*/\1/'`
    targets="$targets|^$target:"
    dependencies="$dependencies$line\n"
    shift
done

# add new dependencies to $depfile
if [ -n "$targets" ]; then
    if [ -r $depfile ]; then
	(egrep -v $targets $depfile; echo -e -n $dependencies) > $TMP/dep$$
	if [ $? -eq 0 ]; then mv $TMP/dep$$ $depfile; fi
    else
	echo -e -n $dependencies > $depfile
    fi
fi