I'm getting results from a package which differ from results that I got a few weeks ago, and the only thing that I can think of that's changed is the version of R (from 4.1.0 to 4.4.1).
So I wanted to install 4.1.0 and play around with that, to see if that is indeed the explanation. (If that is so, a whole new set of questions would be raised, but let's leave that for the moment.) I downloaded the tarball and set about installing 4.1.0 from source. But the configure step threw an error, as given in the subject line of this message. The error went on: > configure: error: libcurl >= 7.28.0 library and headers are required > with support for https A bit of web searching turned up the advice to re-install curl using sudo apt-get install curl but when I did that I was informed that: > curl is already the newest version (7.68.0-1ubuntu2.6). Has anyone got any *useful* advice? If so, please present it in very simple terms if you can. (I am a Bear of Very Little Brain, and long words bother me.) A step-by-step recipe would be appreciated. I'm running Ubuntu 20.04, with a Mate 1.24.0 desktop. Grateful for any pearls of wisdom. cheers, Rolf Turner P.S. The config.log file seems to be full of stuff relating to errors from "openssl.c" but this is *way* beyond my pay grade. R. T. -- Honorary Research Fellow Department of Statistics University of Auckland Phone: +64-9-373-7599 ext. 88276 ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.