Brooklyn

show variables like "%plugin%";

plugin_dir /opt/lampp/lib/mysql/plugin/ 
plugin_maturity gamma 

show variables like 'version_compile_%'

version_compile_machine x86_64 
version_compile_os Linux 

Can't create/write to file '/opt/lampp/lib/mysql/plugin/mysqludf.so' (Errcode: 13 "Permission denied")