MariaDB 5.2.4-94 and xtrabackup 1.5-9

Hi ^^

I have a server (fedora 14) with MySQL 5.1.52-1 and xtrabackup 1.5-9 working.
I only had to change line 1719 :
if (substr($^V,1) lt $perl_version) {
since $^V is v.num_version and not num_version

Now, on a laptop (fedora 14), I switched to MariaDB 5.2.4-94 and I have a few more errors :

Use of uninitialized value $option_ibbackup_binary in concatenation (.) or string at /usr/bin/innobackupex-1.5.1 line 2140.Can’t exec “–print-param”: Aucun fichier ou dossier de ce type at /usr/bin/innobackupex-1.5.1 line 2141.innobackupex-1.5.1: fatal error: no ‘mysqld’ group in MySQL optionsinnobackupex-1.5.1: fatal error: OR no ‘datadir’ option in group ‘mysqld’ in MySQL options

Does somebody have an idea why xtrabackup does this ?

EDIT : Forgot to say I use xtrabackup RHEL5/x86_64