1、下载libEvent,我用的是2.0.22
https://nchc.dl.sourceforge.net/project/levent/release-2.0.22-stable/libevent-2.0.22-stable.tar.gz
2、为了避免麻烦,手工写一个event-config.h
cd libevent/include/event2/
新建一个event-config.h
#ifndef _EVENT2_EVENT_CONFIG_H_
#define _EVENT2_EVENT_CONFIG_H_
#define _EVENT_HAVE_SA_FAMILY_T 1
#define _EVENT_HAVE_SYS_SOCKET_H 1
#define _EVENT_HAVE_NETINET_IN_H 1
#define _EVENT_HAVE_SYS_TIME_H 1
#define _EVENT_HAVE_STDARG_H 1
#define _EVENT_HAVE_UNISTD_H 1
#define _EVENT_HAVE_NETINET_IN6_H 1
#define ARC4RANDOM_BUF 1
#define _EVENT_HAVE_EPOLL
//#define ARC4RANDOM_NOADDRANDOM 1
#define _EVENT_HAVE_STRLCPY 1
#define _EVENT_HAVE_STRSEP 1
#define _EVENT_HAVE_NETDB_H 1
#define _EVENT_HAVE_STRTOK_R 1
#define _EVENT_HAVE_FCNTL_H 1
#define _EVENT_HAVE_GETTIMEOFDAY 1
#define _EVENT_HAVE_INTTYPES_H 1
#define _EVENT_HAVE_MEMORY_H 1
#define _EVENT_HAVE_PUTENV 1
#define _EVENT_HAVE_SIGNAL 1
#define _EVENT_HAVE_STDARG_H 1
#define _EVENT_HAVE_STDDEF_H 1
#define _EVENT_HAVE_STDINT_H 1
#define _EVENT_HAVE_STDLIB_H 1
#define _EVENT_HAVE_STRINGS_H 1
#define _EVENT_HAVE_STRING_H 1
#define _EVENT_HAVE_STRTOLL 1
#define _EVENT_HAVE_STRUCT_IN6_ADDR 1
#define _EVENT_HAVE_STRUCT_IN6_ADDR_S6_ADDR16 1
#define _EVENT_HAVE_STRUCT_IN6_ADDR_S6_ADDR32 1
#define _EVENT_HAVE_STRUCT_SOCKADDR_IN6 1
#define _EVENT_HAVE_STRUCT_SOCKADDR_STORAGE 1
#define _EVENT_HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY 1
#define _EVENT_HAVE_SYS_PARAM_H 1
#define _EVENT_HAVE_SYS_STAT_H 1
#define _EVENT_HAVE_SYS_TIME_H 1
#define _EVENT_HAVE_SYS_TYPES_H 1
#define _EVENT_HAVE_TIMERCLEAR 1
#define _EVENT_HAVE_TIMERCMP 1
#define _EVENT_HAVE_TIMERISSET 1
#define _EVENT_HAVE_UINT16_T 1
#define _EVENT_HAVE_UINT32_T 1
#define _EVENT_HAVE_UINT64_T 1
#define _EVENT_HAVE_UINT8_T 1
#define _EVENT_HAVE_UINTPTR_T 1
#define _EVENT_HAVE_UMASK 1
#define _EVENT_HAVE_UNISTD_H 1
#define _EVENT_LT_OBJDIR ".libs/"
#define _EVENT_NUMERIC_VERSION 0x02001600
#define _EVENT_PACKAGE "libevent"
#define _EVENT_PACKAGE_BUGREPORT ""
#define _EVENT_PACKAGE_NAME ""
#define _EVENT_PACKAGE_STRING ""
#define _EVENT_PACKAGE_TARNAME ""
#define _EVENT_PACKAGE_URL ""
#define _EVENT_PACKAGE_VERSION ""
#define _EVENT_SIZEOF_INT 4
#define _EVENT_SIZEOF_LONG 4
#define _EVENT_SIZEOF_LONG_LONG 8
#define _EVENT_SIZEOF_SHORT 2
#define _EVENT_SIZEOF_SIZE_T4
#define _EVENT_SIZEOF_VOID_P 4
#define _EVENT_STDC_HEADERS 1
#define _EVENT_TIME_WITH_SYS_TIME 1
#define _EVENT_VERSION "2.0.22-stable"
#ifndef _EVENT___cplusplus
#endif
#define _EVENT_socklen_t unsigned int
#endif /* event2/event-config.h */
3、屏蔽arc4random_buf
在libevent/arc4random.c中arc4random_buf定义前加#ifndef ARC4RANDOM_BUF,当然,之后要加#endif
4、在CMakeLists.txt中加
add_library( libevent
SHARED
src/main/cpp/libevent/buffer.c
src/main/cpp/libevent/bufferevent.c
src/main/cpp/libevent/bufferevent_filter.c
src/main/cpp/libevent/bufferevent_pair.c
src/main/cpp/libevent/bufferevent_ratelim.c
src/main/cpp/libevent/bufferevent_sock.c
src/main/cpp/libevent/epoll.c
src/main/cpp/libevent/epoll_sub.c
src/main/cpp/libevent/evdns.c
src/main/cpp/libevent/event.c
src/main/cpp/libevent/event_tagging.c
src/main/cpp/libevent/evmap.c
src/main/cpp/libevent/evrpc.c
src/main/cpp/libevent/evthread.c
src/main/cpp/libevent/evthread_pthread.c
src/main/cpp/libevent/evutil.c
src/main/cpp/libevent/evutil_rand.c
src/main/cpp/libevent/http.c
src/main/cpp/libevent/listener.c
src/main/cpp/libevent/log.c
src/main/cpp/libevent/poll.c
src/main/cpp/libevent/select.c
src/main/cpp/libevent/signal.c
src/main/cpp/libevent/strlcpy.c )
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