https://blogs.gentoo.org/ago/2020/07/04/gentoo-tinderbox/ Issue: net-p2p/p2pool-2.5 fails to compile. Discovered on: amd64 (internal ref: guru_ci)
Created attachment 833083 [details] build.log build log and emerge --info
guru_ci has reproduced this issue with version 2.6 - Updating summary.
It seems like zeromq is a dependency that slipped through. Probably because I forgot to test the use-case in which you have p2pool installed without monerod (which would usually bring in zmq). =net-p2p/p2pool-2.6-r1::guru should fix this.