[fprint] fprintd: compilation error on ubuntu

[laurent.feron@free.fr]

Hello,
Once again a compilation error on Ubuntu. If someone can help me, it is a very hopeless situation.
I did ./autogen.sh; ./configure (with --prefix=/usr for the second try); make

i have this result for FPRINTD compilation:
/bin/bash ../libtool --tag=CC   --mode=link gcc -fPIC -Wall -Wmissing-prototypes  -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include   -g -O2 -shared  -o pam_fprintd.so pam_fprintd_so-pam_fprintd.o pam_fprintd_so-marshal.o -lpam -L/lib -ldbus-glib-1 -ldbus-1 -lpthread -lrt -lgobject-2.0 -lglib-2.0   
libtool: link: gcc -fPIC -Wall -Wmissing-prototypes -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -g -O2 -o pam_fprintd.so pam_fprintd_so-pam_fprintd.o pam_fprintd_so-marshal.o  -lpam -L/lib -ldbus-glib-1 -ldbus-1 -lpthread -lrt /usr/lib/libgobject-2.0.so /usr/lib/libglib-2.0.so
/usr/lib/gcc/i486-linux-gnu/4.4.1/../../../../lib/crt1.o: In function `_start':
/build/buildd/eglibc-2.10.1/csu/../sysdeps/i386/elf/start.S:115: undefined reference to `main'
collect2: ld returned 1 exit status
make[3]: *** [pam_fprintd.so] Error 1

Regards,
Laurent