Re:PostgreSQL 12
by pgaddict on Friday October 04, 2019 @08:09AM
(#21156769)
Depends on packaging. Most distros should have that compiled as a separate package, e.g. postgresql12-llvmjit. So you install that (along with the regular packages) and you'll have JIT.
Only if you actually happened to compile the support for it, which is not the default.