This request is a spin-off from bug 145277 comment 4. http://gmt.soest.hawaii.edu/gmt/gmt_mirrors.html lists currently 9 mirrors from which gmt might be downloaded. Given the large size of some of the data files, choosing a suitable mirror might be important to some people who don't use Gentoo mirrors. In order to faciliate this, I suggest establishing a list of third party mirrors for these, to be entered in /usr/portage/profiles/thirdpartymirrors and used by the gmt ebuilds. The current list of mirrors is this: ftp://ftp.soest.hawaii.edu/gmt ftp://ibis.grdl.noaa.gov/pub/gmt ftp://ftp.iris.washington.edu/pub/gmt ftp://ftp.iag.usp.br/pub/gmt ftp://ftp.geologi.uio.no/pub/gmt ftp://gd.tuwien.ac.at/pub/gmt ftp://ftp.scc.u-tokai.ac.jp/pub/gmt ftp://mirror.geosci.usyd.edu.au/pub/gmt ftp://gmt.mirror.ac.za/pub/gmt N.B.: the FTP host falcon.grdl.noaa.gov in the current gmt ebuild resolved to the same IP as ibis.grdl.noaa.gov which is mentioned in the above list. So the current source will still be used, even if its exact name isn't listed.
Created attachment 199280 [details, diff] Patch adding mirrors and changing ebuild
Thanks for continuing to submit your enhancements to gmt; assigning to sci-geosciences team.
Thanks for reporting, mirrors included.