innobackupex do not support \G syntax

The innobackupex will be error when it running on the source compiled mysql version. The error list following:

120316 15:06:23 innobackupex: Starting mysql with options: --defaults-file=’/etc/my.cnf’ --password=xxxxxxxx --user=‘root’ --unbuffered –
120316 15:06:23 innobackupex: Connected to database with mysql child process (pid=10046)
innobackupex: Error: mysql child process has died: ERROR 1064 (42000) at line 3: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ‘\G
select ‘xtrabackup ping 2’’ at line 1
while waiting for reply to MySQL request: ‘SHOW VARIABLES LIKE ‘version’\G’ at /usr/bin/innobackupex line 371.

Is there any suggestions which make the mysql server support
‘\G’ syntax? Any opinion or suggestions are very appreciated!

It has supported that syntax since the year 0. Something strange is probably happening, such as an odd SQL_MODE setting that xtrabackup is violating.