Apologies for out-of-thread reply. The only feasible solutions are to maintain an off-CRAN (say drat) repository with binary packages you have built yourself, or use the existing CRAN infrastructure (rwinlib for Windows, etc., for which the rgdal, sf, gdalUtils, and other package maintainers are very grateful). Please do provide links to your source repo - it is possible that you are wrong about the changes needed to your code - you need to motivate your assertions. Hope this clarifies, Roger
Roger Bivand Department of Economics, Norwegian School of Economics, Helleveien 30, N-5045 Bergen, Norway. voice: +47 55 95 93 55; e-mail: Roger.Bivand at nhh.no https://orcid.org/0000-0003-2392-6140 https://scholar.google.no/citations?user=AWeghB0AAAAJ&hl=en