Please describe the problem:
GCC says "warning: implicit declaration of function 'g_printf'", when compiling gnome-screensaver-command.c.

Steps to reproduce:
1. ./configure
2. make
3. :-)


Actual results:
GCC says, "gnome-screensaver.c:330: warning: implicit declaration of function 'g_printf'".

Expected results:
To be compiled without the warning. :-)

Does this happen every time?
It does.

Other information:
Ebuild system of Gentoo linux is aborted by the warning, with "QA Notice: Package has poor programming practices which may compile".