I don't know much about Solaris.  This is SunOS 5.10 ...
libs are in /usr/lib, which is included in LD_LIBRARY_PATH.
Yet, upon doing a make:

  [...]

   gcc  -g -O2  -static -o zabbix_agent  zabbix_agent.o stats.o
   cpustat.o diskdevices.o interfaces.o  perfstat.o zbxconf.o
   ../../src/libs/zbxsysinfo/libzbxagentsysinfo.a
   ../../src/libs/zbxsysinfo/solaris/libspecsysinfo.a
   ../../src/libs/zbxsysinfo/common/libcommonsysinfo.a
   ../../src/libs/zbxsysinfo/simple/libsimplesysinfo.a
   ../../src/libs/zbxlog/libzbxlog.a  ../../src/libs/zbxsys/libzbxsys.a
   ../../src/libs/zbxnix/libzbxnix.a
   ../../src/libs/zbxcomms/libzbxcomms.a
   ../../src/libs/zbxconf/libzbxconf.a
   ../../src/libs/zbxcommon/libzbxcommon.a
   ../../src/libs/zbxcrypto/libzbxcrypto.a -lkvm -lm -lresolv -lnsl
   -lkstat -lsocket
   ld: fatal: library -lkvm: not found
   ld: fatal: library -lm: not found
   ld: fatal: library -lresolv: not found
   ld: fatal: library -lnsl: not found
   ld: fatal: library -lkstat: not found
   ld: fatal: library -lsocket: not found
   ld: fatal: library -lc: not found
   ld: fatal: library -lc: not found
   ld: fatal: File processing errors. No output written to zabbix_agent
   collect2: ld returned 1 exit status
   *** Error code 1
   make: Fatal error: Command failed for target `zabbix_agent'

What gives?