i have problem with compiling my project on Ubuntu.

This is my project: https://github.com/23vbq/tv-managing-system/

It contains directory endpoint with Makefile.

I was developing it on Arch and everything is working. For testing I have installed new, clean VM with Arch and two required packages to build (base-devel [for Make], libx11 [for X11]). Everything is building fine.

When trying to test it on Ubuntu build of endpoint fails. I have installed libx11-dev package but it still saying that lot of X11 functions are undefined.

I checked on Arch what libraries are linked:

Ubuntu contains all these libraries.

Also I tested building example of X11 and it is working fine. I don’t have any idea why my project building fails on Ubuntu.