With commit R11:56538adacf53391307f687155be3fc787a95f40b to ports, I noticed an issue with poudriere, I was not able to disble using ccache for single ports (depending on cmake) by defining NO_CCACHE, looks like this commit ignores that varaible.
I also noticed that the commit hardcodes "ccache" as a binary name.
My patch puts the stanza in the general conditional so it is enabled only when ccache is being actually used. I'm also making the value use the variable CCACHE_BIN, which could be configured by the user.