Change package compile settings in FreeBSD

I use ports to install all my stuff in FreeBSD.
This is primarily due to pkg_add very possibly installing out of date versions that may cause conflicts later on.
On occasion, I have to make deinstall to uninstall something possibly because I want to install it again to remove some corruption.
One problem with this is that the previously defined compile options won't be presented for selection again.
However, you can remove the previous settings with

# make rmconfig

and then setting the options again with

# make config-recursive