PGCLUSTER -- ERROR

Hi,

I´m trying to install pgcluster 1.7 on Aix 5.3 and I´m having problems, when I run "./configure --enable-thread-safety" I receive the msg bellow and when a try to do make make install I got a error about libpg

Could someone help me please ?

Thanks in advance

checking for sys/sem.h... yes

checking sys/socket.h usability... no

checking sys/socket.h presence... yes

configure: WARNING: sys/socket.h: present but cannot be compiled

configure: WARNING: sys/socket.h: check for missing prerequisite headers?

configure: WARNING: sys/socket.h: see the Autoconf documentation

configure: WARNING: sys/socket.h: section "Present But Cannot Be Compiled"

configure: WARNING: sys/socket.h: proceeding with the preprocessor's result

configure: WARNING: sys/socket.h: in the future, the compiler will take precedence

configure: WARNING: ## ---------------------------------------- ##

configure: WARNING: ## Report this to pgsql-bugs(at)postgresql(dot)org ##

configure: WARNING: ## ---------------------------------------- ##

checking for sys/socket.h... yes

checking sys/shm.h usability... yes

checking sys/shm.h presence... yes

checking for sys/shm.h... yes

checking sys/time.h usability... yes

checking sys/time.h presence... yes

checking for sys/time.h... yes

checking sys/un.h usability... yes

gcc -O2 -Wall -Wmissing-prototypes -Wpointer-arith -Winline -Wdeclaration-after-statement -Wendif-labels -fno-strict-aliasing -DUSE_REPLICATION -DPRINT_DEBUG -pthread -L../../src/port -L/usr/lib/threads -Wl,-blibpath:/pgcluster17/lib:/usr/lib:/lib access/SUBSYS.o bootstrap/SUBSYS.o catalog/SUBSYS.o parser/SUBSYS.o commands/SUBSYS.o executor/SUBSYS.o lib/SUBSYS.o libpq/SUBSYS.o main/SUBSYS.o nodes/SUBSYS.o optimizer/SUBSYS.o port/SUBSYS.o postmaster/SUBSYS.o regex/SUBSYS.o rewrite/SUBSYS.o storage/SUBSYS.o tcop/SUBSYS.o utils/SUBSYS.o ../../src/timezone/SUBSYS.o ../../src/port/libpgport_srv.a -Wl,-bE:../../src/backend/postgres.imp -lld -lm -o postgres

ld: 0711-317 ERROR: Undefined symbol: .PQsetdbLogin

ld: 0711-317 ERROR: Undefined symbol: .PQstatus

ld: 0711-317 ERROR: Undefined symbol: .PQfinish

ld: 0711-317 ERROR: Undefined symbol: .PQexec

ld: 0711-317 ERROR: Undefined symbol: .PQresultStatus

ld: 0711-317 ERROR: Undefined symbol: .PQclear

ld: 0711-317 ERROR: Undefined symbol: .PQntuples

ld: 0711-317 ERROR: Undefined symbol: .PQgetvalue

ld: 0711-345 Use the -bloadmap or -bnoquiet option to obtain more information.

collect2: ld returned 8 exit status

gmake[2]: *** [postgres] Error 1