[Serusers] Problems compiling radius_acc module

Hello, I'm trying to compile the radius_acc modude but have run into the following error: ###### make[1]: Entering directory `/home/cthorell/ser-0.8.10/modules/radius_acc' gcc -fPIC -DPIC -O9 -funroll-loops -Wcast-align -Wall -m486 -malign-loops=4 -DNAME='"ser"' -DVERSION='"0.8.10"' -DARCH='"i386"' -DOS='"linux"' -DCOMPILER='"gcc 2.95"' -D__CPU_i386 -DCFG_DIR='"/usr/local/etc/ser/"' -DPKG_MALLOC -DSHM_MEM -DSHM_MMAP -DADAPTIVE_WAIT -DADAPTIVE_WAIT_LOOPS=1024 -DDNS_IP_HACK -DUSE_IPV6 -DDBG_QM_MALLOC -DFAST_LOCK -DHAVE_GETHOSTBYNAME2 -DHAVE_UNION_SEMUN -DHAVE_SCHED_YIELD -c acc.c -o acc.o acc.c:38: radiusclient.h: File not found make[1]: *** [acc.o] Error 1 make[1]: Leaving directory `/home/cthorell/ser-0.8.10/modules/radius_acc' ###### I can't find radiusclient.h either on ser-0.8.10 or freeradius-0.8.1 directories. Where can I find this file? Thanks, Claudio