msabramo/homebrew — comment on commit b79053288698d616e5a2916c889b9bb2db9ffacb
File: Library/Formula/trafficserver.rb line 11
By msabramo:

Actually this should be the slightly briefer `ENV.enable_warnings`. But the reason that this is needed is because otherwise the `configure` script will wrongly guess the function signature of `gethostbyname_r` if it doesn't get a warning (which becomes an error via `-Werror`) when it compiles a `conftest.c`.