zabbix 2.0.0 precompiled linux agent is looking for the config file in /home/build/zabbix-2.0.0/etc/zabbix_agentd.conf

http://www.zabbix.com/downloads/2.0.0/zabbix_agents_2.0.0.linux2_6_23.i386.tar.gz

same issue also for fbsd 8.2 agent; solaris 10 agent even looks for /export/home/zabbix/sasha/zabbix-2.0.0/etc/zabbix_agentd.conf

probably best would be not to set prefix when compiling agents, and only grab the binary afterwards.