I want to cross_compile a c program, which communicates with the device "/dev/i2c-0" in SAM_A5d27 board. For which I needed the libi2c-dev package in my Ubuntu-18.04 desktop. As the SAM_A5d27 has arm architecture, therefore I have added the armhf architecture to "dpkg" and tried to install the libi2c-dev in armhf but I got error as "E: Unable to locate package libi2c-dev:armhf". The following steps I had followed. Please have a look and help me to solve this problem.
gp@guru-hp:~$ sudo dpkg --add-architecture armhf
gp@guru-hp:~$ sudo apt-get update
Hit:1 http://in.archive.ubuntu.com/ubuntu bionic InRelease
Get:2 http://in.archive.ubuntu.com/ubuntu bionic-updates InRelease [88.7 kB]
Ign:3 http://dl.google.com/linux/chrome/deb stable InRelease
Hit:4 http://dl.google.com/linux/chrome/deb stable Release
Get:5 http://in.archive.ubuntu.com/ubuntu bionic-backports InRelease [74.6 kB]
Hit:6 http://ppa.launchpad.net/js-reynaud/kicad-5.1/ubuntu bionic InRelease
Get:7 http://security.ubuntu.com/ubuntu bionic-security InRelease [88.7 kB]
Get:9 http://in.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:9 http://in.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:9 http://in.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:9 http://in.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:9 http://in.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:9 http://in.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:9 http://in.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:9 http://in.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:9 http://in.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:9 http://in.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:9 http://in.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:9 http://in.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:9 http://in.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:9 http://in.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:9 http://in.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:9 http://in.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:9 http://in.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Get:9 http://in.archive.ubuntu.com/ubuntu bionic/main armhf Packages [968 kB]
Ign:9 http://in.archive.ubuntu.com/ubuntu bionic/main armhf Packages
Get:28 http://in.archive.ubuntu.com/ubuntu bionic/restricted armhf Packages [8,360 B]
Get:28 http://in.archive.ubuntu.com/ubuntu bionic/restricted armhf Packages [8,360 B]
Get:28 http://in.archive.ubuntu.com/ubuntu bionic/restricted armhf Packages [8,360 B]
Ign:28 http://in.archive.ubuntu.com/ubuntu bionic/restricted armhf Packages
Ign:32 http://in.archive.ubuntu.com/ubuntu bionic/universe armhf Packages
Ign:33 http://in.archive.ubuntu.com/ubuntu bionic/multiverse armhf Packages
Ign:34 http://in.archive.ubuntu.com/ubuntu bionic-updates/main armhf Packages
Ign:35 http://in.archive.ubuntu.com/ubuntu bionic-updates/restricted armhf Packages
Ign:36 http://in.archive.ubuntu.com/ubuntu bionic-updates/universe armhf Packages
Ign:37 http://in.archive.ubuntu.com/ubuntu bionic-updates/multiverse armhf Packages
Ign:38 http://in.archive.ubuntu.com/ubuntu bionic-backports/main armhf Packages
Ign:39 http://in.archive.ubuntu.com/ubuntu bionic-backports/universe armhf Packages
Ign:9 http://in.archive.ubuntu.com/ubuntu bionic/main armhf Packages
Ign:28 http://in.archive.ubuntu.com/ubuntu bionic/restricted armhf Packages
Ign:32 http://in.archive.ubuntu.com/ubuntu bionic/universe armhf Packages
Ign:33 http://in.archive.ubuntu.com/ubuntu bionic/multiverse armhf Packages
Ign:34 http://in.archive.ubuntu.com/ubuntu bionic-updates/main armhf Packages
Ign:35 http://in.archive.ubuntu.com/ubuntu bionic-updates/restricted armhf Packages
Ign:36 http://in.archive.ubuntu.com/ubuntu bionic-updates/universe armhf Packages
Ign:37 http://in.archive.ubuntu.com/ubuntu bionic-updates/multiverse armhf Packages
Ign:38 http://in.archive.ubuntu.com/ubuntu bionic-backports/main armhf Packages
Ign:39 http://in.archive.ubuntu.com/ubuntu bionic-backports/universe armhf Packages
Ign:9 http://in.archive.ubuntu.com/ubuntu bionic/main armhf Packages
Ign:28 http://in.archive.ubuntu.com/ubuntu bionic/restricted armhf Packages
Ign:32 http://in.archive.ubuntu.com/ubuntu bionic/universe armhf Packages
Ign:33 http://in.archive.ubuntu.com/ubuntu bionic/multiverse armhf Packages
Ign:34 http://in.archive.ubuntu.com/ubuntu bionic-updates/main armhf Packages
Ign:35 http://in.archive.ubuntu.com/ubuntu bionic-updates/restricted armhf Packages
Ign:36 http://in.archive.ubuntu.com/ubuntu bionic-updates/universe armhf Packages
Ign:37 http://in.archive.ubuntu.com/ubuntu bionic-updates/multiverse armhf Packages
Ign:38 http://in.archive.ubuntu.com/ubuntu bionic-backports/main armhf Packages
Ign:39 http://in.archive.ubuntu.com/ubuntu bionic-backports/universe armhf Packages
Ign:40 http://security.ubuntu.com/ubuntu bionic-security/main armhf Packages
Get:41 http://security.ubuntu.com/ubuntu bionic-security/main amd64 Packages [651 kB]
Err:9 http://in.archive.ubuntu.com/ubuntu bionic/main armhf Packages
404 Not Found [IP: 2403:8940:ffff::f 80]
Get:42 http://security.ubuntu.com/ubuntu bionic-security/main i386 Packages [442 kB]
Get:43 http://security.ubuntu.com/ubuntu bionic-security/main Translation-en [211 kB]
Get:44 http://security.ubuntu.com/ubuntu bionic-security/main amd64 DEP-11 Metadata [38.5 kB]
Get:45 http://security.ubuntu.com/ubuntu bionic-security/main DEP-11 48x48 Icons [17.6 kB]
Get:46 http://security.ubuntu.com/ubuntu bionic-security/main DEP-11 64x64 Icons [41.5 kB]
Get:47 http://security.ubuntu.com/ubuntu bionic-security/restricted armhf Packages [3,968 B]
Get:47 http://security.ubuntu.com/ubuntu bionic-security/restricted armhf Packages [3,968 B]
Get:47 http://security.ubuntu.com/ubuntu bionic-security/restricted armhf Packages [3,968 B]
Get:47 http://security.ubuntu.com/ubuntu bionic-security/restricted armhf Packages [3,968 B]
Get:47 http://security.ubuntu.com/ubuntu bionic-security/restricted armhf Packages [3,968 B]
Get:47 http://security.ubuntu.com/ubuntu bionic-security/restricted armhf Packages [3,968 B]
Get:47 http://security.ubuntu.com/ubuntu bionic-security/restricted armhf Packages [3,968 B]
Get:47 http://security.ubuntu.com/ubuntu bionic-security/restricted armhf Packages [3,968 B]
Get:47 http://security.ubuntu.com/ubuntu bionic-security/restricted armhf Packages [3,968 B]
Get:47 http://security.ubuntu.com/ubuntu bionic-security/restricted armhf Packages [3,968 B]
Get:47 http://security.ubuntu.com/ubuntu bionic-security/restricted armhf Packages [3,968 B]
Ign:28 http://in.archive.ubuntu.com/ubuntu bionic/restricted armhf Packages
Ign:32 http://in.archive.ubuntu.com/ubuntu bionic/universe armhf Packages
Ign:33 http://in.archive.ubuntu.com/ubuntu bionic/multiverse armhf Packages
Err:34 http://in.archive.ubuntu.com/ubuntu bionic-updates/main armhf Packages
404 Not Found [IP: 2403:8940:ffff::f 80]
Ign:35 http://in.archive.ubuntu.com/ubuntu bionic-updates/restricted armhf Packages
Ign:36 http://in.archive.ubuntu.com/ubuntu bionic-updates/universe armhf Packages
Ign:37 http://in.archive.ubuntu.com/ubuntu bionic-updates/multiverse armhf Packages
Err:38 http://in.archive.ubuntu.com/ubuntu bionic-backports/main armhf Packages
404 Not Found [IP: 2403:8940:ffff::f 80]
Ign:39 http://in.archive.ubuntu.com/ubuntu bionic-backports/universe armhf Packages
Ign:47 http://security.ubuntu.com/ubuntu bionic-security/restricted armhf Packages
Ign:59 http://security.ubuntu.com/ubuntu bionic-security/universe armhf Packages
Ign:60 http://security.ubuntu.com/ubuntu bionic-security/multiverse armhf Packages
Ign:40 http://security.ubuntu.com/ubuntu bionic-security/main armhf Packages
Ign:47 http://security.ubuntu.com/ubuntu bionic-security/restricted armhf Packages
Ign:59 http://security.ubuntu.com/ubuntu bionic-security/universe armhf Packages
Ign:60 http://security.ubuntu.com/ubuntu bionic-security/multiverse armhf Packages
Ign:40 http://security.ubuntu.com/ubuntu bionic-security/main armhf Packages
Ign:47 http://security.ubuntu.com/ubuntu bionic-security/restricted armhf Packages
Ign:59 http://security.ubuntu.com/ubuntu bionic-security/universe armhf Packages
Ign:60 http://security.ubuntu.com/ubuntu bionic-security/multiverse armhf Packages
Err:40 http://security.ubuntu.com/ubuntu bionic-security/main armhf Packages
404 Not Found [IP: 2001:67c:1562::15 80]
Ign:47 http://security.ubuntu.com/ubuntu bionic-security/restricted armhf Packages
Ign:59 http://security.ubuntu.com/ubuntu bionic-security/universe armhf Packages
Ign:60 http://security.ubuntu.com/ubuntu bionic-security/multiverse armhf Packages
Fetched 252 kB in 5s (45.9 kB/s)
Reading package lists... Done
E: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/bionic/main/binary-armhf/Packages 404 Not Found [IP: 2403:8940:ffff::f 80]
E: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/bionic-updates/main/binary-armhf/Packages 404 Not Found [IP: 2403:8940:ffff::f 80]
E: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/bionic-backports/main/binary-armhf/Packages 404 Not Found [IP: 2403:8940:ffff::f 80]
E: Failed to fetch http://security.ubuntu.com/ubuntu/dists/bionic-security/main/binary-armhf/Packages 404 Not Found [IP: 2001:67c:1562::15 80]
E: Some index files failed to download. They have been ignored, or old ones used instead.
gp@guru-hp:~$
gp@guru-hp:~$ sudo apt-get install libi2c-dev:armhf
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package libi2c-dev:armhf
gp@guru-hp:~$
I have verified the availability of the package libi2c-dev in ubunt package manager site. https://packages.ubuntu.com/bionic/libi2c-dev