C99 compatibility fixes for configure scripts
Define _GNU_SOURCE in the math tests so that exp10 can be found.
Include <stdio.h> for the puts function in the __progname check.
Related to:
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.
Define _GNU_SOURCE in the math tests so that exp10 can be found.
Include <stdio.h> for the puts function in the __progname check.
Related to: