Can't find external units

Hi,

Simple hello world project is working fine (I can create deb package), but if I try to add some external unit like httpsend.pas from synapse sockets (it is placed in my home/components/synapse, so not in default lazarus components dir) then when try to build deb package I get error "unit1.pas(8,68) Fatal: Can not find unit httpsend used by Unit1"

Regards
