gnome-screensaver 2.5.16 doesn't compile

[Thomas]

Hello list

Gnome Screensaver 2.15.6 doesn't compile

I get this error:
gs-auth-pam.c: In function `pam_conversation':
gs-auth-pam.c:207: error: `PAM_INCOMPLETE' undeclared (first use in this
function)
gs-auth-pam.c:207: error: (Each undeclared identifier is reported only
once
gs-auth-pam.c:207: error: for each function it appears in.)
gmake[4]: *** [gs-auth-pam.o] Error 1
gmake[4]: Leaving directory
`/usr/ports/x11/gnome-screensaver/work/gnome-screensaver-2.15.6/src'
gmake[3]: *** [all-recursive] Error 1
gmake[3]: Leaving directory
`/usr/ports/x11/gnome-screensaver/work/gnome-screensaver-2.15.6/src'
gmake[2]: *** [all] Error 2
gmake[2]: Leaving directory
`/usr/ports/x11/gnome-screensaver/work/gnome-screensaver-2.15.6/src'
gmake[1]: *** [all-recursive] Error 1
gmake[1]: Leaving directory
`/usr/ports/x11/gnome-screensaver/work/gnome-screensaver-2.15.6'
gmake: *** [all] Error 2
*** Error code 2



gnome-screensaver 2.15.6
========================

prefix:                   /usr/local
exec_prefix:              ${prefix}
libdir:                   /usr/local/lib
bindir:                   /usr/local/bin
sysconfdir:               /usr/local/etc
localstatedir:            /usr/local/share/gnome
datadir:                  /usr/local/share/gnome
PAM prefix:               /usr/local/etc
source code location:     .
compiler:                 cc
cflags:                   -O -g -pipe 
Base libs:                -Wl,--rpath -Wl,/usr/local/lib -pthread
-L/usr/local/lib -L/usr/X11R6/lib -lgtk-x11-2.0 -lgdk-x11-2.0 -lXrandr
-lXi -lXinerama -latk-1.0 -lgdk_pixbuf-2.0 -lpangocairo-1.0 -lXcursor
-lXfixes -lcairo -lpangoft2-1.0 -lfontconfig -lfreetype -lz -lpango-1.0
-lXrender -lX11 -lXext -lgobject-2.0 -ldbus-glib-1 -ldbus-1 -lgconf-2
-lORBit-2 -lm -lgmodule-2.0 -lgthread-2.0 -lgnome-menu -lglib-2.0
-liconv  
 Extension libs:            -L/usr/X11R6/lib  -lSM -lICE -lX11  -lXss
-lXxf86vm -lXxf86misc
Maintainer mode:          no
GL:                       yes

Screen locking enabled:   yes
PAM support:              yes
Have shadow passwords:    no
Have adjunct shadow:      no
Have enhanced shadow:     no
Have HPUX shadow:         no
Have password helper:     no
Authentication scheme:    pam
Need setuid dialog:       no

Any idea?

Cheers,
Thomas