Hi Gunce,
 
Is the plperl package (postgresql96-plperl for Centos, postgresql-plperl-9.6 for Debian) installed on the system?
 
Debian
apt-get install postgresql-plperl-9.6
 
Centos
yum install postgresql96-plperl
 
Best regards.


İyi çalışmalar.
Samed YILDIRIM



27.07.2017, 09:35, "Günce Kaya" <guncekaya14@gmail.com>:
Hello,

When I try to create plperl extension, I'm getting error bellow;

ERROR: could not open extension control file "../plperl.control": No such file or directory


I checked as to whether postgresql-contrib package installed. This package already installed. 

I can not create any extension now and I work on PostgreSQL 9.6.1 on x86_64-pc-linux-gnu.

Do you have any idea what's the problem?

Regards,

--
Gunce Kaya