Linux基于libmemcached，php扩展memcached的安装

安装环境：CentOS 6.4 

php的扩展memcache，不支持cas，因此咱们要装memcached扩展，memcached扩展是基于libmemcached，因此要先安装libmemcached

1、下载软件

一、libmemcached下载地址：https://launchpad.net/libmemcached/+download

文件：memcached-2.2.0.tgz

二、php-memcached下载地址：http://pecl.php.net/package/memcached

文件：libmemcached-1.0.18.tar.gz 

2、安装libmemcached （libmemcached-1.0.18.tar.gz）

[root@localhost mysoft]#mkdir /usr/local/libmemcached
[root@localhost mysoft]# tar -zxvf libmemcached-1.0.18.tar.gz

[root@localhost mysoft]# cd libmemcached-1.0.18

[root@localhost mysoft]# ./configure --prefix=/usr/local/libmemcached/ --with-memcached
[root@localhost mysoft]# make

[root@localhost mysoft]# make install
3、安装php-memcached（php-memcached-2.2.0.tgz）

[root@localhost mysoft]# mkdir /usr/local/phpmemcached

[root@localhost mysoft]# tar -zxvf php-memcached-2.2.0.tgz

[root@localhost mysoft]# cd memcached-2.2.0/

[root@localhost mysoft]# /phpstudy/server/php/bin/phpize

Configuring for:
PHP Api Version: 20131106
Zend Module Api No: 20131226
Zend Extension Api No: 220131226

[root@localhost mysoft]# ./configure --enable-memcached --with-php-config=/phpstudy/server/php/bin/php-config  --with-libmemcached-dir=/usr/local/libmemcached/ --disable-memcached-sasl

[root@localhost mysoft]# make
[root@localhost mysoft]# make install

Installing shared extensions: /usr/local/php/lib/php/extensions/no-debug-zts-20131226/

[root@localhost mysoft]# ll /phpstudy/server/php/lib/php/extensions/no-debug-non-zts-20121212/
 

总用量 852
-rwxr-xr-x  1 root root 333097 9月  18 08:24 memcached.so
-rwxr-xr-x. 1 root root 533480 9月   2 23:50 opcache.so

[root@localhost mysoft]# vi /phpstudy/server/php/etc/php.ini 
加上     extension=memcached.so

[root@localhost mysoft]# phpstudy restart

4、安装遇到的问题
一、安装libmemcached过程当中不要忘了，--with-memcached，否则会提示你

checking for memcached... no
configure: error: "could not find memcached binary"

二、你的memcached是否是1.2.4以上的，若是不是会提示你

clients/ms_thread.o: In function `ms_setup_thread':
/home/zhangy/libmemcached-0.42/clients/ms_thread.c:225: undefined reference to `__sync_fetch_and_add_4'
clients/ms_thread.o:/home/zhangy/libmemcached-0.42/clients/ms_thread.c:196: more undefined references to `__sync_fetch_and_add_4' follow
collect2: ld returned 1 exit status
make[2]: *** [clients/memslap] Error 1
make[2]: Leaving directory `/home/zhangy/libmemcached-0.42'

解决办法是--disable-64bit CFLAGS="-O3 -march=i686"，若是不用这个64位的long型数据，我想php扩展memcached，memcache也就没什么区别了，装memcached也就没什么意思了。