Libanne is a series of libraries that form the underlying support for many of the United States Geologic Survey software for hydrology and hydraulics.
Created attachment 83059 [details] libanne-4.0.ebuild (new package)
Created attachment 83060 [details, diff] patch_libanne.diff (put in "files" directory) Patch to support Linux.
Suggest sci-libs
The USGS ebuilds are so far away from being useful to anyone, that I want to withdraw from consideration. Also, I now have much nicer versions that USGS won't support so I am at a crossroads about what to do.