libevent linux安装

wget http://monkey.org/~provos/libevent-1.4.13-stable.tar.gz
wget http://downloads.sourceforge.net/levent/libevent-2.0.22-stable.tar.gz

tar –xzvf libevent-1.4.13-stable.tar.gz
tar -xzvf libevent-2.0.22-stable.tar.gz

cd libevent-1.4.13-stable

./configure --prefix=/home/mydir/libevent
不指定prefix，则可执行文件默认放在/usr /local/bin，
库文件默认放在/usr/local/lib，
配置文件默认放在/usr/local/etc。
其它的资源文件放在/usr /local/share。
你要卸载这个程序，要么在原来的make目录下用一次make uninstall（前提是make文件指定过uninstall）,要么去上述目录里面把相关的文件一个个手工删掉。
指定prefix，直接删掉一个文件夹就够了。

make && make install

src:main.cpp

/*
* XXX This sample code was once meant to show how to use the basic Libevent
* interfaces, but it never worked on non-Unix platforms, and some of the
* interfaces have changed since it was first written. It should probably
* be removed or replaced with something better.
*
* Compile with:
* cc -I/usr/local/include -o time-test time-test.c -L/usr/local/lib -levent
*/

#include <sys/types.h>

#include <event2/event-config.h>

#include <sys/stat.h>
#ifndef WIN32
#include <sys/queue.h>
#include <unistd.h>
#endif
#include <time.h>
#ifdef _EVENT_HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#include <fcntl.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>

#include <event2/event.h>
#include <event2/event_struct.h>
#include <event2/util.h>

#ifdef WIN32
#include <winsock2.h>
#endif

struct timeval lasttime;

int event_is_persistent;

static void
timeout_cb(evutil_socket_t fd, short event, void *arg)
{
struct timeval newtime, difference;
struct event *timeout = (struct event *)arg;
double elapsed;

evutil_gettimeofday(&newtime, NULL);
evutil_timersub(&newtime, &lasttime, &difference);
elapsed = difference.tv_sec +
(difference.tv_usec / 1.0e6);

printf("timeout_cb called at %d: %.3f seconds elapsed.\n",
(int)newtime.tv_sec, elapsed);
lasttime = newtime;

if (! event_is_persistent) {
struct timeval tv;
evutil_timerclear(&tv);
tv.tv_sec = 2;
event_add(timeout, &tv);
}
}

int
main(int argc, char **argv)
{
struct event timeout;
struct timeval tv;
struct event_base *base;
int flags;

#ifdef WIN32
WORD wVersionRequested;
WSADATA wsaData;

wVersionRequested = MAKEWORD(2, 2);

(void)WSAStartup(wVersionRequested, &wsaData);
#endif

if (argc == 2 && !strcmp(argv[1], "-p")) {
event_is_persistent = 1;
flags = EV_PERSIST;
} else {
event_is_persistent = 0;
flags = 0;
}

/* Initalize the event library */
base = event_base_new();

/* Initalize one event */
event_assign(&timeout, base, -1, flags, timeout_cb, (void*) &timeout);

evutil_timerclear(&tv);
tv.tv_sec = 2;
event_add(&timeout, &tv);

evutil_gettimeofday(&lasttime, NULL);

event_base_dispatch(base);

return (0);
}

g++ main.cpp -L./libevent/lib -levent -I./libevent/include/
export LD_LIBRARY_PATH=/home/shengkaishan/work/libevent/lib/:$LD_LIBRARY_PATH