Then sudo apt-get update gives:

 

[..]

W: Failed to fetch http://apt.armbian.com/dists/jessie/InRelease Unable to find expected entry 'main/binary-armel/Packages' in Release file (Wrong sources.list entry or malformed file)

 

E: Some index files failed to download. They have been ignored, or old ones used instead

 

Am I doing something wrong? Please, how can I fix that?

 

cat /etc/armbian-release 

# PLEASE DO NOT EDIT THIS FILE

BOARD=orangepipc

BOARD_NAME="Orange Pi PC"

VERSION=5.25

LINUXFAMILY=sun8i

BRANCH=default

ARCH=arm

IMAGE_TYPE=stable

 

 

Am I doing something wrong? Please, how can I fix that?

We don't provide any packages for the armel architecture. You can disable this warning by adding [arch=armhf] to /etc/apt/sources.list.d/armbian.list like this:

deb [arch=armhf] http://apt.armbian.com jessie main utils jessie-desktop

Why would you want armel anyway?  It's only for old hardware that can't support armhf, (v4t to v6) and the upcoming Debian release will be its last. 

Why would you want armel anyway?  It's only for old hardware that can't support armhf, (v4t to v6) and the upcoming Debian release will be its last. 

Possibly running closed source armel software with qemu-user (or directly, not sure if kernel can properly deal with this type of multiarch setup).

Thank you @zador that fixed it. @Blars I'm trying to find a workaround for this error:

 

gcc hello.c -mfloat-abi=soft -o hello

In file included from /usr/include/features.h:398:0,

                 from /usr/include/stdio.h:27,

                 from hello.c:1:

/usr/include/arm-linux-gnueabihf/gnu/stubs.h:7:29: fatal error: gnu/stubs-soft.h: No such file or directory

 # include <gnu/stubs-soft.h>

                             ^

compilation terminated.