Missing file "config.h"

[Björn Försterling]

Hello,

I cloned the repository https://github.com/coreutils/coreutils.git and
tried to compile some of the programs it contains.

But the files include a file called "config.h".

$ gcc -Wall hostname.c
hostname.c:19:10: fatal error: config.h: No such file or directory
19 | #include <config.h>
| ^~~~~~~~~~
compilation terminated.

How can I get this file? Is it included in some package? Or do I have
to run a specific tool or script first?

Thanks in advance.

Regards
Bjoern Foersterling