Building a Summoner as a tank?

[Psyren]

By tank I mean either a wall of flesh and magic that can take a lot of punishment, or being able to call up a wall of flesh and magic that can take a lot of punishment.

A summoner can certainly do both, though the former is more the province of the synthesist.

Your first step is determining whether you want (as well as whether your GM allows you) to use the base summoner or the unchained summoner. In general, the unchained summoner is weaker because the base summoner is widely seen as overpowered, but your table may vary.

Once you decide on a summoner, start with a handbook and then come back with any questions.

https://rpgbot.net/pathfinder/charac...sses/summoner/
https://forums.giantitp.com/showthre...inder-Summoner
https://forums.giantitp.com/showthre...ner-Mini-Guide