32 bit 64 bit question, ELFCLASS32 error
On Mon, 1 Feb 2021 at 10:32, Dirk Eddelbuettel <edd at debian.org> wrote:
On 1 February 2021 at 10:20, semih ozlem wrote: | Hi everyone, | | On a usb with knoppix live uname -a gives the response Wow. Blast from the past. | Linux Microknoppix 5.3.5-64 #16 SMP PREEMPT Wed Oct 23 02:08:38 CEST 2019 | x86_64 GNU/Linux | | uname -i | | unknown | | I am trying to run a python script that uses R, and I am getting an error: | OSError: cannot load library '/usr/lib/R/lib/libR.so': | /usr/lib/R/lib/libR.so: wrong ELF class: ELFCLASS32 | | When look at the directory /usr/lib/R/lib/, the file libR.so is listed | there. | | When I look up on the internet what might be the cause of this, there is | some indication about R being of 32 bit or 4 bit architecture. But I am not | able to resolve the issue on my own completely. | | when R starts it states that the Platform is i686-pc-linux-gnu (32-bit) So that would be 32 bit indeed. | Does anyone have any idea why R is installed as 32-bit, and if and how can | it be changed to 64-bit, and if this indeed is the cause of the problem I | am facing.
AFAIK, Microknoppix has the option to boot in 32-bit mode. Given that they want both 32-bit and 64-bit on a DVD it is not surprising that they would only provide the 32-bit R installation.
You may need to get in touch with the person who made the bootable image you use. I used to do these things and provide a Knoppix variant myself: it was called Quantian with its site at http://quantian.org (and the site is still up -- but also states no new content since 2006 (!!)). If you just put the current Ubuntu installer on a bootable usb, it will also allow you to install from it and have R and all that. 32 bit is on the way out, newer Ubuntu distros no longer build it and I forget what we do over in Debian. As what may be your real question: where do I in 2021 get a current bootable usb with R: no idea, sorry.
You should be able to use any of the popular "live Linux" images to do a normal install on USB device 32GB or larger, then use the package manager to install a current R (deian is a good choice). There are USB "flash memory sticks" with adequate capacity but they won't last long running a linux distro. For longer term reliability you can use USB SSD drives.
Another related answer is that 32 and 64 bit _can_ coexist (as they do on other OSs) but that never really took off in common use. So there may still be way to use what you have but you may need to consult the specific documentation.
George N. White III [[alternative HTML version deleted]]