-#if PHP_HTTP_HAVE_CURL
-#if PHP_HTTP_HAVE_EVENT
-# if !PHP_HTTP_HAVE_EVENT2 && /* just be really sure */ !(LIBEVENT_VERSION_NUMBER >= 0x02000000)
-# include <event.h>
-# define event_base_new event_init
-# define event_assign(e, b, s, a, cb, d) do {\
- event_set(e, s, a, cb, d); \
- event_base_set(b, e); \
- } while(0)
-# else
-# if PHP_HTTP_HAVE_EVENT2
-# include <event2/event.h>
-# include <event2/event_struct.h>
-# else
-# error "libevent presence is unknown"
-# endif
-# endif
-# ifndef DBG_EVENTS
-# define DBG_EVENTS 0
-# endif