xfce4-power-manager: Issue building latest git version

[Robin]

It has been a while since I built xfce4-power-manager (0.8.2r07751).
I checked out the latest git repo and tried compiling with:

./autogen.sh --prefix=/usr && make

and I get:

hal-device.c:38:25: error: hal-marshal.h: No such file or directory
hal-device.c: In function ‘hal_device_class_init’:
hal-device.c:77: error:
‘_hal_marshal_VOID__STRING_STRING_BOOLEAN_BOOLEAN’ undeclared (first
use in this function)
hal-device.c:77: error: (Each undeclared identifier is reported only once
hal-device.c:77: error: for each function it appears in.)
hal-device.c:88: error: ‘_hal_marshal_VOID__STRING_STRING’ undeclared
(first use in this function)
hal-device.c: In function ‘hal_device_add_watch’:
hal-device.c:140: error: ‘_hal_marshal_VOID__INT_BOXED’ undeclared
(first use in this function)
hal-device.c: In function ‘hal_device_add_watch_condition’:
hal-device.c:171: error: ‘_hal_marshal_VOID__STRING_STRING’ undeclared
(first use in this function)
make[3]: *** [libxfpmhal_la-hal-device.lo] Error 1
make[3]: Leaving directory
`/home/robin/git_projects/xfce4-power-manager/libxfpm'
make[2]: *** [all] Error 2
make[2]: Leaving directory
`/home/robin/git_projects/xfce4-power-manager/libxfpm'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/home/robin/git_projects/xfce4-power-manager'
make: *** [all] Error 2

I am running Debian 5.0 and all the libraries were installed correctly
last time.  Unless something has changed.

Thanks for any help!

Robin