OK , for that error , I have to manually compile lzo from source .
down lzo from here
http://www.oberhumer.com/opensource/lzo/
configure / make / sudo make install
then go back to wal-g and make pg_install then works.
but , why you guys move the wal-g to / ? not /usr/local/bin or somewhere else but put files in rootfs ?
that’s really weird …