Why can't I build a “hello world” for glib?

Question

So here\'s the world\'s simplest glib program:

#include 

I try to compile it with gcc test.c and I get:

Answer 1

As @chris said use pkg-config.

glibconfig.h is missing 

it’s because this file is not in the /usr/include/glib-2.0, but in /usr/lib/glib-2.0. So you have to include also this /usr/lib path or copy the file to the /include/glib-2.0