源码安装memcache

1.安装libevent库，下载地址：
# ./configure && make
# make install

 

2.安装memcache，下载地址：   默认安装到/usr/local/bin/下了
# ./configure --with-libevent=/usr/local/
# make
# make install

 

3.安装Memcache的PHP扩展，下载地址：
# tar zxvf memcache-2.2.5.tgz
# cd memcache-2.2.5
# /usr/local/php5/bin/phpize
# ./configure --enable-memcache --with-php-config=/usr/local/php5/bin/php-config --with-zlib-dir
# make
# make test （出错Build complete.
Don't forget to run 'make test'.

PHP Warning:  PHP Startup: Unable to load dynamic library './php_mysql.dll' - ./php_mysql.dll: cannot open shared object file: No such file or directory in Unknown on line 0）
# make install
Installing shared extensions:     /usr/local/php5/lib/php/extensions/no-debug-non-zts-20060613/

 

4.整合memcache和php
# vi /usr/local/php5/lib/php.ini
修改extension_dir = "./" 为 extension_dir = /usr/local/php5/lib/php/extensions/no-debug-non-zts-20060613/
添加一行来载入memcache扩展：extension=memcache.so

 

5.调试

下面运行memcache，有出错信息
# memcached -d -m 1000 -u root -l 127.0.0.1 -p 12000 -c 256 -P /tmp/memcached.pid
memcached: error while loading shared libraries: libevent-1.4.so.2: cannot open shared object file: No such file or directory
我们来进行调试：
# LD_DEBUG=libs memcached -v        
     20139:     find library=libevent-1.4.so.2 [0]; searching
     20139:      search cache=/etc/ld.so.cache
     20139:      search path=/lib64/tls/x86_64:/lib64/tls:/lib64/x86_64:/lib64:/usr/lib64/tls/x86_64:/usr/lib64/tls:/usr/lib64/x86_64:/usr/lib64               (system search path)
     20139:       trying file=/lib64/tls/x86_64/libevent-1.4.so.2
     20139:       trying file=/lib64/tls/libevent-1.4.so.2
     20139:       trying file=/lib64/x86_64/libevent-1.4.so.2
     20139:       trying file=/lib64/libevent-1.4.so.2
     20139:       trying file=/usr/lib64/tls/x86_64/libevent-1.4.so.2
     20139:       trying file=/usr/lib64/tls/libevent-1.4.so.2
     20139:       trying file=/usr/lib64/x86_64/libevent-1.4.so.2
     20139:       trying file=/usr/lib64/libevent-1.4.so.2
     20139:
memcached: error while loading shared libraries: libevent-1.4.so.2: cannot open shared object file: No such file or directory
可能是由于64位的操作系统搜索路径问题，现在的lib是在/usr/local/lib/下面，我们做个软连接：
# ln -s /usr/local/lib/libevent-1.4.so.2 /usr/lib64/libevent-1.4.so.2
# memcached -d -m 1000 -u root -l 127.0.0.1 -p 12000 -c 256 -P /tmp/memcached.pid

 

6.运行memcache

# memcached -d -m 1000 -u root -l 127.0.0.1 -p 12000 -c 1024 -P /tmp/memcached.pid

 

-d选项是启动一个守护进程，
-m是分配给Memcache使用的内存数量，单位是MB
-u是运行Memcache的用户，这里是root
-l是监听的服务器IP地址，如果有多个地址的话，我这里指定了服务器的IP地址127.0.0.1
-p是设置Memcache监听的端口，我这里设置了12000，最好是1024以上的端口
-c选项是最大运行的并发连接数，默认是1024，按照你服务器的负载量来设定
-P是设置保存Memcache的pid文件，这里是保存在 /tmp/memcached.pid