../Eris/.libs/liberis-1.3.so: undefined reference to `Mercator::ShapeTerrainMod::ShapeTerrainMod(WFMath::Polygon<2> const&)'
The only related thing I found out there was this IRC log from January with no answer: http://brenda.worldforge.org/index.php?channel=lounge&log=201101101809
No, that's correct. Make sure that you don't have any older version installed though. Are you compiling from the numbered releases, or from git (using Hammer for example)?
I'm compiling from numbered releases. Since I'm always working with packages, I'm almost sure there is no older mercator version installed, else I would not be able to install newest.
Sorry about this error, it was fixed in git shortly after 0.3.0 was released. There are a number of compiler fixes in git now, so I guess we are due another round of releases.