Ubuntu 12.04 Source Installation MySQL-5.5.40

Pre-installation:

sudo apt-get-y install cmake libncurses5-dev bison g++ make

http://now51jq.blog.51cto.com/3474143/1317281

http://crazyming.blog.51cto.com/1048571/1217201

http://my.oschina.net/u/1019341/blog/186433

Here is some problems I had during the installation.

1. Mysqld:error while loading shared libraries:libaio.so.1:cannot open Shared object file:no such file or directory
I Fixed after Installing libaio1 :  sudo apt-get Install libaio1

2. When I am trying to run/usr/local/mysql/scripts/mysql_install_db–user=mysql to reate the data dictionary

This command gives the following error:
FATAL error:could not find mysqld

The following directories were searched:

/usr/libexec
/usr/sbin
/usr/bin

Fix:find and remove the old my.cnf file.
sudo rm/etc/mysql/my.cnf, because it is getting the details from THE/ETC/MY.CNF

Don ' t forget to set your root password.
./bin/mysqladmin-u root password ' new-password '

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Ubuntu 12.04 Source Installation MySQL-5.5.40