(Third attempt to post this. :( )
I have the originakl XEphem-3.7.7.
Today I tried to update it to the latest release and had 2 issues:
(a) Firstly, I downloaded the 2019 magnetic variation file (the address
on the NOAA site has changed), and copied it to replace the old one, in
/usr/lib/. The file apparently can't be read; the magnetic variation
should be +7.4, and a figure in that range is shown in the new file,
but the program now shows +0.0. I checked the ownership, and the
permissions are standard.
(2) I then downloaded the SRPM for Fedora, and tried to configure it
for my distro (Mageia) The RPM builder keeps saying that the
dependency libXmu-devel isn't met (32-bit or 64-bit.) I had installed
both. No version is mentioned in the spec file.
*System, Mageia 8 (just released) running 64-bit. Routinely accepts
spec files for PCLos and Fedora.