cfitsio : C and Fortran library for manipulating FITS files ( http://heasarc.gsfc.nasa.gov/docs/software/fitsio/fitsio.html )
geos : Geometry engine library for Geographic Information Systems ( http://trac.osgeo.org/geos/ )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a gentoo-playground
For Paludis use this rsync : rsync://gentoo.zugaina.org/gentoo-playground-portage
If you have a problem : ycarus(-at-)zugaina.org