how to install GD extension with ispconfig additional php5.6-fpm

Hi,
I installed php5.6-fpm as additional extension in isconfig-3.1.13 for an old web site on a debian 9 server. I added old extensions mysql and gd that way:

compiled and installed without problems. Mysql connection works fine after some adaptations and
the GD extension seems to be fine:

but the old web site still complains about GD library with that type of message:

Any idea ?

 

I have same problem. Anyone that has solved this?
I have installed the gd library for php 5.6
I tried first edit the general php file.
Then I was thinking that php 5.6 is an adition and I edit the php.ini file in the folder /opt/php-5.6/lib I also edit the php.ini file that was in the webfolder of the site. and restarted apache but stil I cant see any GD library when I check the url of the site for php info.

Any suggestions to how to make it work?

 

Anyone that has had same problem and fixed it?

 

We mostly are using Ondrej Sury repo for php and that is including php5.6. That way we just need to use apt-get install php5.6-gd and this is the easiest yet safest way if compared to your self-compiled method.