GLIBC 2.33 Required for ARM architecture, but not for X86?

[jjang3]

Hello everyone,

I am relatively new in using libsodium and got myself familiar by starting with this example: https://libsodium.gitbook.io/doc/secret-key_cryptography/secretbox

So to summarize, on my x86 machine, I am able to successfully compile the above example using this command: gcc libsodium_ex.c -o libsodium_ex/libsodium_ex_x86.out -lsodium and also obtain the following output as shown below:

uname -a results in Linux jay-mch 5.4.0-91-generic #102-Ubuntu SMP Fri Nov 5 16:31:28 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux

So on my x86 machine, libsodium seems to work wonderfully.

However, when I was trying this example out on ARM architecture, and upon executing the same executable as above compiled for the ARM architecture, I face an error as shown below:

uname -a results in Linux ubuntu 5.15.0-rc7+ #1 SMP PREEMPT Tue Nov 2 01:35:20 UTC 2021 aarch64 aarch64 aarch64 GNU/Linux

I am at the moment trying to see whether I can install GLIBC 2.33 on my ARM QEMU machine to see whether that would fix this problem, but that has also been a bit of a painful process and I found it interesting that GLIBC 2.31 is fine for x86 whereas it is not okay for ARM, so I wanted to ask a question why this is the case.

Thank you very much for any help you can provide,
Sincerely,