Build using several cores make -j(n+1) where n=#CPUs, For example:
make -j2
If there something goes wrong, this make argument outputs more details.
make V=99
You can get email notification upon completing build process. For this you need to install and configure email. After you are done, type this long command:
date > /tmp/text.txt; make -j 2 >> /tmp/text.txt; date >> /tmp/text.txt; mail -s "done" email_where_to_send_report@server.com < /tmp/text.txt
If you wish to observe current progress on computer, type in another console
tail -f /tmp/text.txt