The 17.0 major release is coming on May 16, 2024! This version brings many exciting improvements to GitLab, but also removes some deprecated features. We are introducing three breaking change windows during which we expect breaking changes to be deployed to GitLab.com. You can read more about it on our blogpost. The second breaking change window begins 2024-04-29 09:00 UTC and ends 2024-05-01 22:00 UTC.
This was building flawlessly on Windows but not on Linux. So I just changed the CFLAGS as you can see on the diff and it stopped complaining about the location of glib.h and glibconfig.h. After this change I've successfully built it on Linux.