1631103 - Stop building DNS and arc4random components of libevent

Status: NEW

(Core :: IPC, enhancement, P3)

Description

[Jed Davis [:jld] ⟨⏰|UTC-8⟩ ⟦he/him⟧]

We don't use the DNS client built into libevent, or the PRNG it depends on, so we should stop building them. This will save some (probably not much) binary size, and it will allow us to be more certain that we're not affected by upstream security bugs.

This is mostly straightforward (and I have a patch that seems to work locally) except for needing to remove or stub out the initialization calls here and here.

Comment 1

[Jan Alexander Steffens [:heftig]]

Maybe this has become necessary now. Currently, Firefox fails to build with GLibC 2.36 because the added arc4random conflicts with the one from libevent, due to the hardcoded event-config.h for Linux having /* #undef EVENT__HAVE_ARC4RANDOM */.