#! /bin/sh

IAM=`hostname || uname -n`
MYNAME=`IFS=. ; set $IAM ; echo $1`

case "$1" in
 '--one'|'-1')
     shift
     FB_FIRSTONLY=1
     LIST=$MYNAME
     ;;
 *)
     FB_FIRSTONLY=0
esac

BUILD_ARGS="$@"
PARSE="--enable-parse-clocks"
#PARSE=
STD="--enable-simulator"

case "$SIMUL::$FB_FIRSTONLY" in
 ::*)
    PARALLEL_BUILDS=1
    ;;
 *::0)
    PARALLEL_BUILDS=$SIMUL
    ;;
 *)
    PARALLEL_BUILDS=1
esac

case "$PARALLEL_BUILDS" in
 1)  ;;
 *)  echo Launching $PARALLEL_BUILDS parallel builds on each machine
esac

# Backroom:
#   barnstable	   freebsd-6.1
#   beauregard	   freebsd-6.0
# X churchy	   alpha-dec-osf5.1
#   deacon	   sparc-sun-solaris2.10
#   grundoon	   freebsd-6.2
#   howland	   freebsd-6.1
# o macabre	   freebsd-6.1-STABLE
# o mort	   freebsd-6.1
#   whimsy	   sparc-sun-solaris2.10

# Campus:
# * baldwin	   sparc-sun-solaris2.10
# * bridgeport	   sparc-sun-solaris2.10
# * malarky	   sparc-sun-solaris2.10
# * pogo	   sparc-sun-solaris2.10
# * rackety	   freebsd-6.1

if [ ! -r sntp/libevent/build-aux/config.guess ] ; then
	echo "Error: bootstrap required." 1>&2 && exit 1
fi

# HMS: we need $PWD because solaris produces /deacon/backroom when
# we are in /backroom and in general there is no /deacon/backroom.
c_d=${PWD:-`pwd`}

SIG=`perl -e 'print rand'`

case "$LIST" in
 '') LIST="pogo" ;;
esac

for i in $LIST
do
    SKIPTHIS=0
    [ -f .buildkey-$i ] && SKIPTHIS=1
    case "$SKIPTHIS" in
     1)
	echo flock-build running on $i? check LIST, skipping
	;;
     0)
	echo $i
	echo $SIG > .buildkey-$i
	case "1" in
	 0)
	    ssh $i "cd $c_d ; ./build $SIG $PARSE $STD $BUILD_ARGS" &
	    ssh $i "cd $c_d ; ./build $SIG $PARSE $STD --disable-debugging $BUILD_ARGS" &
	    ssh $i "cd $c_d ; ./build $SIG $PARSE $STD --without-crypto --enable-c99-snprintf $BUILD_ARGS" &
	    ssh $i "cd $c_d ; ./build $SIG        $STD --disable-all-clocks --disable-autokey --without-sntp --disable-thread-support $BUILD_ARGS" &
	    ;;
	 1)
	    cat > .flockbuild-$i-$SIG <<-ENDQUOT
		#!/bin/sh

		# script uses job control and expects to be invoked
		# in a ssh session started with the -tt option, 
		# which forces a pseudo-tty to be used.
		
		cd $c_d
		COUNT=0

		./build $SIG $PARSE $STD $BUILD_ARGS &

		COUNT=\`expr \$COUNT + 1\`
		echo \`date -u '+%H:%M:%S'\` $i started build \$COUNT of 4
		[ 0 -lt \`expr \$COUNT % $PARALLEL_BUILDS\` ] || wait

		case $FB_FIRSTONLY in
		 '0')
			./build $SIG $PARSE $STD --disable-debugging $BUILD_ARGS &

			COUNT=\`expr \$COUNT + 1\`
			echo \`date -u '+%H:%M:%S'\` $i started build \$COUNT of 4
			[ 0 -lt \`expr \$COUNT % $PARALLEL_BUILDS\` ] || wait

			./build $SIG $PARSE $STD --without-crypto --enable-c99-snprintf $BUILD_ARGS &

			COUNT=\`expr \$COUNT + 1\`
			echo \`date -u '+%H:%M:%S'\` $i started build \$COUNT of 4
			[ 0 -lt \`expr \$COUNT % $PARALLEL_BUILDS\` ] || wait

			./build $SIG        $STD --disable-all-clocks --disable-autokey --without-sntp --disable-thread-support $BUILD_ARGS &

			COUNT=\`expr \$COUNT + 1\`
			echo \`date -u '+%H:%M:%S'\` $i started build \$COUNT of 4
			wait
		esac
		echo \`date -u '+%H:%M:%S'\` $i flock-build $c_d done.
		rm .buildkey-$i
ENDQUOT
	    chmod +x .flockbuild-$i-$SIG
	    ssh -tt $i "$c_d/.flockbuild-$i-$SIG ; \
		rm $c_d/.flockbuild-$i-$SIG" 2>/dev/null &
	esac
    esac
done
echo `date -u '+%H:%M:%S'` flock-build launched