#!/usr/local/bin/bash

source `which env_parallel.bash`

MP=$1
DP=$2
WRKAREA=$3
INDEXFILE=$(mktemp /tmp/indexfile.XXXXXXXXX)

[ ! -d "${MP}" ] && exit 1
[ ! -d "${DP}" ] && exit 1
[ ! -d "${WRKAREA}" ] && exit 1

export DISTDIR=${WRKAREA}/distdir
export WRKDIRPREFIX=${WRKAREA}/obj
export PORTSDIR=${DP}
export PORT_DBDIR=/tmp

[ ! -z "$3" ] && DISTDIR_LINE="DISTDIR=$3"

/usr/bin/find -s ${MP}/[a-z]* -type d -depth 1 -maxdepth 1 | \
    env_parallel -j $(sysctl -n hw.ncpu) "/usr/bin/make -C {} describe >> ${INDEXFILE}"

/bin/mv /${INDEXFILE} ${MP}/INDEX-3