#!/bin/sh

set -x

usage="bcheck [-jN] [-o filename]"

jfactor=""
outfile=""
while getopts j:o: flag
do
	case $flag in
	j)	jfactor="-j$OPTARG" ;;

	o)	outfile=$OPTARG ;;

	\\?)	echo $usage;
		exit 1 ;;
	esac
done

shift `expr "$OPTIND" - 1`
if [ $# -ne 0 ]
then
	echo $usage
	exit 1
fi

if mmake $jfactor all
then
	echo "building of stage 1 successful"
else
	echo "building of stage 1 not successful"
	exit 1
fi

root=`/bin/pwd`

# .pp files are not necessary

[ -d stage2 ] || mkdir stage2
/bin/rm -fr stage2/*
mkdir stage2/compiler
mkdir stage2/library
cp compiler/*.m stage2/compiler
cp compiler/Mmake* stage2/compiler
cp library/*.m stage2/library
cp library/Mmake* stage2/library
ln -s $root/boehm_gc stage2/boehm_gc
ln -s $root/doc stage2/doc
ln -s $root/runtime stage2/runtime
ln -s $root/scripts stage2/scripts
cp Mmake* stage2

MERCURY_COMPILER=$root/compiler/mercury_compile
export MERCURY_COMPILER
MERCURY_INT_DIR=$root/stage2/library
export MERCURY_INT_DIR

if (cd stage2 ; mmake depend)
then
	echo "building of stage 2 dependencies successful"
else
	echo "building of stage 2 dependencies not successful"
	exit 1
fi

if (cd stage2 ; mmake $jfactor library)
then
	echo "building of stage 2 library successful"
else
	echo "building of stage 2 library not successful"
	exit 1
fi

if (cd stage2 ; mmake $jfactor all)
then
	echo "building of stage 2 successful"
else
	echo "building of stage 2 not successful"
	exit 1
fi

# .pp files are not necessary

[ -d stage3 ] || mkdir stage3
/bin/rm -fr stage3/*
mkdir stage3/compiler
mkdir stage3/library
cp compiler/*.m stage3/compiler
cp compiler/Mmake* stage3/compiler
cp library/*.m stage3/library
cp library/Mmake* stage3/library
ln -s $root/boehm_gc stage3/boehm_gc
ln -s $root/doc stage3/doc
ln -s $root/runtime stage3/runtime
ln -s $root/scripts stage3/scripts
cp Mmake* stage3

MERCURY_COMPILER=$root/stage2/compiler/mercury_compile
export MERCURY_COMPILER
MERCURY_INT_DIR=$root/stage3/library
export MERCURY_INT_DIR

if (cd stage3 ; mmake depend)
then
	echo "building of stage 3 dependencies successful"
else
	echo "building of stage 3 dependencies not successful"
	exit 1
fi

if (cd stage3 ; mmake $jfactor library)
then
	echo "building of stage 3 library successful"
else
	echo "building of stage 3 library not successful"
	exit 1
fi

if (cd stage3 ; mmake $jfactor all)
then
	echo "building of stage 3 successful"
else
	echo "building of stage 3 not successful"
	exit 1
fi

if [ -n "$outfile" ]
then
	diff stage2/library stage3/library > "$outfile"
	diff stage2/compiler stage3/compiler >> "$outfile"
else
	diff stage2/library stage3/library
	diff stage2/compiler stage3/compiler
fi

exit 0