Пробую настроить проверку трафика на вирусы с помощью clamav, squid, c-icap. При сборке c-icap возникла следующая проблема (в ALT Linux Server 4)

[root@proxy c_icap-060708rc2]# make
Making all in .
make[1]: Entering directory `/usr/src/c_icap-060708rc2'
/bin/sh ./libtool --tag=CC   --mode=link gcc -Iinclude/ -DCONFDIR=\"/usr/local/c-icap/etc\" -DMODSDIR=\"/usr/local/c-icap/lib/c_icap/\" -DSERVDIR=\"/usr/local/c-icap/lib/c_icap/\" -DLOGDIR=\"/usr/local/c-icap/var/log/\" -D_REENTRANT -g -O2 -Wall -rdynamic -rpath /usr/local/c-icap/lib   -o c-icap c_icap-aserver.o c_icap-request.o c_icap-cfg_param.o c_icap-proc_threads_queues.o c_icap-http_auth.o c_icap-access.o c_icap-log.o c_icap-service.o c_icap-module.o c_icap-commands.o c_icap-mpmt_server.o c_icap-dlib.o -lpthread libicapapi.la  -ldl
libtool: link: gcc -Iinclude/ -DCONFDIR=\"/usr/local/c-icap/etc\" -DMODSDIR=\"/usr/local/c-icap/lib/c_icap/\" -DSERVDIR=\"/usr/local/c-icap/lib/c_icap/\" -DLOGDIR=\"/usr/local/c-icap/var/log/\" -D_REENTRANT -g -O2 -Wall -rdynamic -o .libs/c-icap c_icap-aserver.o c_icap-request.o c_icap-cfg_param.o c_icap-proc_threads_queues.o c_icap-http_auth.o c_icap-access.o c_icap-log.o c_icap-service.o c_icap-module.o c_icap-commands.o c_icap-mpmt_server.o c_icap-dlib.o  -lpthread ./.libs/libicapapi.so -lz -ldl -Wl,-rpath -Wl,/usr/local/c-icap/lib
./.libs/libicapapi.so: undefined reference to `dlsym'
./.libs/libicapapi.so: undefined reference to `dlerror'
./.libs/libicapapi.so: undefined reference to `dlopen'
./.libs/libicapapi.so: undefined reference to `dlclose'
collect2: ld returned 1 exit status
make[1]: *** [c-icap] Error 1
make[1]: Leaving directory `/usr/src/c_icap-060708rc2'
make: *** [all-recursive] Error 1