Linux基于libmemcached，php扩展memcached的安装

aa13142023

　　安装环境：CentOS 6.4
　　
　　php的扩展memcache，不支持cas，所以我们要装memcached扩展，memcached扩展是基于libmemcached，所以要先安装libmemcached
　　
　　一、下载软件
　　1、libmemcached下载地址：https://launchpad.net/libmemcached/+download
　　文件：memcached-2.2.0.tgz
　　2、php-memcached下载地址：http://pecl.php.net/package/memcached
　　文件：libmemcached-1.0.18.tar.gz
　　
　　二、安装libmemcached
　　[iyunv@vm15 local]# mkdir -p libmemcached
[iyunv@vm15 local]# tar zxvf libmemcached-1.0.18.tar.gz
[iyunv@vm15 local]# cd libmemcached-1.0.18
[iyunv@vm15 libmemcached-1.0.18]# ./configure --prefix=/usr/local/libmemcached  --with-memcached
[iyunv@vm15 libmemcached-1.0.18]# make
[iyunv@vm15 libmemcached-1.0.18]# make install
　　
　　三、安装php-memcached
　　[iyunv@vm15 local]# mkdir -p phpmemcached
[iyunv@vm15 local]# tar zxvf memcached-2.2.0.tgz
[iyunv@vm15 local]# cd memcached-2.2.0
[iyunv@vm15 memcached-2.2.0]# /usr/local/php/bin/phpize
Configuring for:
PHP Api Version:         20131106
Zend Module Api No:      20131226
Zend Extension Api No:   220131226
[iyunv@vm15 memcached-2.2.0]# ./configure --enable-memcached --with-php-config=/usr/local/php/bin/php-config --with-libmemcached-dir=/usr/local/libmemcached  --disable-memcached
-sasl
[iyunv@vm15 memcached-2.2.0]# make
[iyunv@vm15 memcached-2.2.0]# make install
Installing shared extensions:     /usr/local/php/lib/php/extensions/no-debug-zts-20131226/
[iyunv@vm15 memcached-2.2.0]# ll  /usr/local/php/lib/php/extensions/no-debug-zts-20131226/
　　total 2140
-rwxr-xr-x. 1 root root 325608 Dec 30 15:59 memcached.so
-rwxr-xr-x. 1 root root 453766 Dec 30 17:44 memcache.so
-rwxr-xr-x. 1 root root 540834 Dec 19 15:38 opcache.so
-rwxr-xr-x. 1 root root 861055 Dec 30 16:47 redis.so
　　[iyunv@vm15 memcached-2.2.0]# vi + /usr/local/php/lib/php.ini
加上extension=memcached.so
[iyunv@vm15 memcached-2.2.0]# /usr/local/apache2/bin/apachectl restart
查看phpinfo可以看到支持了

　　
　　四、安装遇到的问题
1、安装libmemcached过程中不要忘了，--with-memcached，不然会提示你
　　checking for memcached... no
configure: error: "could not find memcached binary"
　　2、你的memcached是不是1.2.4以上的，如果不是会提示你
　　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"，如果不用这个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。