sudo make install to install.
Optionally, patching ATS with ethread.patch helps with eliminating latency that sometimes gets induced when synchronising the ATS and PageSpeed thread pools.
After that, update ATS's plugin.config with:
ats_pagespeed.so gzip.so /usr/local/etc/trafficserver/gzip.config
gzip.so also is build with ats_pagespeed, as it currently is a slightly modified version of the official one from the ATS repository.
These directories should exist:
/tmp/ps_log/ to exist /tmp/ats_ps/ to exist
Configuration files go into
/usr/local/etc/trafficserver/psol. That folder is monitored, and changes to files in there are picked up immediately.