Please describe the problem:
GDM 2.20.3 fails to compile with the following error:

verify-shadow.o: In function `gdm_verify_setup_user':
verify-shadow.c:(.text+0x88): undefined reference to `gdm_debug'
verify-shadow.c:(.text+0xd8): undefined reference to `gdm_debug'
verify-shadow.o: In function `gdm_verify_user':
verify-shadow.c:(.text+0x3b5): undefined reference to `gdm_debug'
verify-shadow.c:(.text+0x463): undefined reference to `gdm_debug'
verify-shadow.c:(.text+0x66c): undefined reference to `gdm_debug'
verify-shadow.o:verify-shadow.c:(.text+0x738): more undefined references to `gdm_debug' follow
collect2: ld returned 1 exit status
make[2]: *** [gdm-binary] Error 1
make[2]: Leaving directory `/tmp/gdm-2.20.3/daemon'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/tmp/gdm-2.20.3'
make: *** [all] Error 2

The last version of gdm to compile with shadow was 2.20.2.

SlackWare 12.0
Kernel 2.6.21.5_smp / Xfce 4.4.2 / gtk+2 2.10.13 / Xorg 1.3.0.0
gnome-doc-utils 0.12.0 / libgnomecanvas 2.20.1.1 / gail 1.20.2

Steps to reproduce:


Actual results:


Expected results:


Does this happen every time?


Other information: