[ 84%] Building CXX object sql/CMakeFiles/sql.dir/mysqld.cc.o
/root/workspace/mysql-5.5.11/sql/mysqld.cc: In function ‘void handle_connections_sockets()’:
/root/workspace/mysql-5.5.11/sql/mysqld.cc:5213: error: invalid conversion from ‘size_socket*’ to ‘socklen_t*’
/root/workspace/mysql-5.5.11/sql/mysqld.cc:5213: error:   initializing argument 3 of ‘int accept(int, sockaddr*, socklen_t*)’
/root/workspace/mysql-5.5.11/sql/mysqld.cc:5280: error: invalid conversion from ‘int*’ to ‘socklen_t*’
/root/workspace/mysql-5.5.11/sql/mysqld.cc:5280: error:   initializing argument 3 of ‘int getsockname(int, sockaddr*, socklen_t*)’
make[2]: *** [sql/CMakeFiles/sql.dir/mysqld.cc.o] Error 1
make[1]: *** [sql/CMakeFiles/sql.dir/all] Error 2
make: *** [all] Error 2 

解决方案，在mysql的解压目录下执行命令：

>make clean

>rm CMakeCache.txt