编译安装MySQL5.1.41

./configure --prefix=/usr/local/mysql --with-plugins=max --with-extra-charsets=all
#出错 No curses/termcap library found
#安装 ncurses后就正常了

make
make install

chown -R mysql:mysql /mysql
#改配置my.cnf
#以mysql用户账号建立数据表
/usr/local/mysql/bin/mysql_install_db --defaults-file=/etc/my.cnf --basedir=/usr/local/mysql --datadir=/mysql/ --user=mysql --pid-file=/mysql/mysql.pid --skip-locking --port=3306 --socket=/mysql/mysql.sock
#启动mysql：
/usr/local/mysql/bin/mysqld_safe  --defaults-file=/etc/my.cnf &
#停止mysql:
/usr/local/mysql/bin/mysqladmin -u root -p -S /mysql/mysql.sock  shutdown

ps:后来换了datadir目录和socket，本地mysql命令连的时候就出错了
mysql -uroot -p
Enter password:
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/mysql/mysql.sock' (2)
后来发现是配置文件有冲突，删了以前/etc/mysql目录下的my.cnf下的就ok了