build() {
	# detect extracted source directory name
	for s in ${source[@]}; do
		case $s in
			*.tar.*|*.tgz) srcdir=$(tar -tf $PKGMK_SOURCE_DIR/${s##*/} | cut -d / -f1 | head -n1);;
		esac
		break
	done
	# cd into extracted source directory
	if [ "$srcdir" ] && [ -d "$srcdir" ]; then
		cd $srcdir
	fi

	if [ "$(command -v bootstrap_build)" ]; then
		bootstrap_build
	else
		./configure --prefix=$TOOLS $bootstrap_opt $@ || return $?
		make || return $?
		make install || return $?
	fi
	touch $PKG/dummyfile
}