Code review comment for lp:~widelands-dev/widelands/cmakepolicy

Hm... looks like Ubuntu needs other linkerflags?

I am running archlinux, which is much close to any changes. Each time a new release of a program/library is official it will get soonish into the archlinux repo. Ubuntu is more conservative to this.

Log for revision which has this changes already in:

https://launchpad.net/~widelands-dev/+archive/ubuntu/widelands-daily/+build/15541748/+files/buildlog_ubuntu-cosmic-amd64.widelands_1%3A19-ppa0-bzr8880-201810140801~ubuntu18.10.1_BUILDING.txt.gz