CarpetX: a Cactus driver for the Einstein Toolkit based on AMReX
README
Cactus Code Thorn SHTOOLS
Author(s)    : Erik Schnetter
Maintainer(s): Cactus team
Licence      : ?
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1. Purpose

Configure the SHTOOLS library; see




From the web site:

SHTOOLS - Spherical Harmonic Tools

SHTOOLS/pyshtools is an archive of Fortran 95 and Python software that
can be used to perform spherical harmonic transforms, multitaper
spectral analyses on the sphere, expansions of functions into Slepian
bases, and standard operations on global gravitational and magnetic
field data.

Mark A. Wieczorek and Matthias Meschede (2018). SHTools -- Tools for
working with spherical harmonics, Geochemistry, Geophysics,
Geosystems, 19, 2574-2592, doi:10.1029/2018GC007529.