www/gitea: build exits with "flag provided but not defined"

Created by: utrenkner

I wanted to install gitea and was surprised that it was not in the official package repo. Even though the project uses gitea for its main source repo (although on older version). I tried to build it myself using poudriere, but failed.

First the build exited with flag provided but not defined: -pie. Thus, I de-selected PIE for this port. It then exited with flag provided but not defined: -Wl,-z,relro.