The handlersocket configure script does not properly detect the version of the mariadb source code. So, it reports that the versions of the mariadb source and the mariadb binary distribution differ and terminates. I am filing this as a MariaDB bug since it seems to me that it is in MariaDB's interest to provide a patch for handlersocket.

To reproduce, follow the instructions for building handlersocket located at

https://github.com/ahiguti/HandlerSocket-Plugin-for-MySQL/blob/master/docs-en/installation.en.txt

for example, use the following configure:

./configure --with-mysql-source=/home/philips/bzr/mysql-5.3.0-MariaDB-alpha --with-mysql-bindir=/home/philips/bzr/maria-5.3-bintar/bin/

and you will get the following error:

checking mysql source... yes: Using /home/philips/bzr/mysql-5.3.0-MariaDB-alpha, version
checking mysql binary... yes: Using /home/philips/bzr/maria-5.3-bintar/bin/mysql_config, version 5.3.0-MariaDB-alpha
configure: error: MySQL source version does not match MySQL binary version

Grep the configure script for the error message to see how version detection is implemented. See

http://www.mysqlfanboy.com/2010/12/installing-handlersocket-nosql-plugin-into-miariadb-on-centos-5-5/

for a possible patch.