#! /bin/sh

if false ;then
	OPTVAL=`getopt -o cb:l:s:k:L:v -n 'build-all' -- "$@"`
else
	# XNU/BSD getopt is special...
	OPTVAL=$(getopt cb:l:s:k:L:v "$@")
fi

if [ $? != 0 ]
then
	echo 'Usage: see source...'
	exit 2
fi

eval set -- "$OPTVAL"

cd $(dirname $0)

#set -x

b=$PWD # base directory
l=$b/build.log    # where to log operations
s=$b/build.seq    # build sequence
k=$b/kext.stage   # where to place kexts after build

load=''           # list of kexts to load
clean=0
verbose=0

while true ;do
	case "$1" in
		-c)
			clean=1
			shift 1
		;;
		-v)
			verbose=$(($verbose + 1))
			shift 1
		;;
		-b)
			b=$2
			shift 2
		;;
		-l)
			l=$2
			shift 2
		;;
		-s)
			s=$2
			shift 2
		;;
		-k)
			k=$2
			shift 2
		;;
		-L)
			load=$2
			shift 2
		;;
		--) 
			shift 
			break 
		;;
		*) 
			echo "Internal error!" 
			exit 1 
		;;
	esac
done

echo > $l

function message ()
{
	local msg

	msg="$1"
	echo $msg
	echo $msg >> $l
}

function abort ()
{
	local msg

	msg=$1

	message "$1"
	exit 1
}

function configure_xcode ()
{
	local path
	local pfile
	local module

	path=$PWD
	module=$(basename $path)
	pfile=$path/$module.xcode/project.pbxproj
	if [ -r $pfile.template ] ;then
		cpp \
			-P \
			-include $b/build-config \
			$pfile.template | \
		tail +2 > $pfile
	else
		abort "missing $pfile.template"
	fi
}

if [ x$clean != x0 ] ;then
	echo "Removing..."
	find $b/ -type d -name build
	rm -fr $(find $b/ -type d -name build)
	find $b/ -print0 | xargs -0 touch
fi

cat $s | while read ;do
	d=$REPLY
	if [ x$d = x ] ;then
		: # empty line. Do nothing
	elif [ ${d:0:1} = '#' ] ;then
		: # comment. Skip
	else
		cd $d  || abort "Cannot cd to $d"
		message "________ Building in $d __________"
		#configure_xcode
        if [ $verbose -gt 0 ] ;then
            xcodebuild 2>&1 | tee -a $l
        else
		    xcodebuild >> $l 2>&1 || abort "Build failure in $d. See $l"
        fi
		# tail -2 $l
		cd $b
	fi
done

# copy all built kexts into $k
# sudo is used, because extensions are later chowned to root.
sudo rm -f ../include/arch
ln -s ../include/arch-xnu ../include/arch
sudo rm -fr $k || abort "Cannot clean $k"
mkdir $k || abort "Cannot create $k"
cp -R $(find ../ -name \*.kext -type d) $k || abort "Cannot stage kexts"
cd $k || abort "Cannot chdir to $k"
sudo chown -R root:wheel * || abort "Cannot chown kexts to root:wheel"

if [ x$load != x ] ;then
	cd $k
	sudo kextload -r $k $load
else	
	sudo chown -R root:wheel *
fi
cd $b

sync;sync;sync