ecpg build on AIX 4.2.1

I am getting Undefined symbols in build ecpg

gmake -C compatlib all
gmake[4]: Entering directory `/usr/local/postgres/pgsql/src/interfaces/ecpg/compatlib'
../../../../src/backend/port/aix/mkldexport.sh libecpg_compat.a > libecpg_compat.exp
gcc -O2 -pipe -Wall -Wmissing-prototypes -Wmissing-declarations -Wl,-bnoentry -Wl,-H512 -Wl,-bM:SRE -o libecpg_compat.so libecpg_compat.a -L../../../../src/port -L/usr/local/ssl/lib -lm -lssl -lcrypto -L/usr/local/ssl/lib -L../../../../src/port -L/usr/local/ssl/lib -L/usr/local/ssl/lib -L../pgtypeslib -lpgtypes -L../ecpglib -lecpg -Wl,-bI:../../../../src/backend/postgres.imp -Wl,-bE:libecpg_compat.exp
ld: 0711-224 WARNING: Duplicate symbol: .ParseDateTime
ld: 0711-224 WARNING: Duplicate symbol: .DecodeUnits
ld: 0711-224 WARNING: Duplicate symbol: .date2j
ld: 0711-224 WARNING: Duplicate symbol: .j2date
ld: 0711-224 WARNING: Duplicate symbol: .j2day
ld: 0711-224 WARNING: Duplicate symbol: .EncodeDateOnly
ld: 0711-224 WARNING: Duplicate symbol: .EncodeDateTime
ld: 0711-224 WARNING: Duplicate symbol: .GetEpochTime
ld: 0711-224 WARNING: Duplicate symbol: .GetCurrentDateTime
ld: 0711-224 WARNING: Duplicate symbol: .DecodeDateTime
ld: 0711-224 WARNING: Duplicate symbol: months
ld: 0711-224 WARNING: Duplicate symbol: days
ld: 0711-224 WARNING: Duplicate symbol: .tm2timestamp
ld: 0711-224 WARNING: Duplicate symbol: .DecodeInterval
ld: 0711-224 WARNING: Duplicate symbol: .EncodeInterval
ld: 0711-345 Use the -bloadmap or -bnoquiet option to obtain more information.
ld: 0711-317 ERROR: Undefined symbol: .PQfinish
ld: 0711-317 ERROR: Undefined symbol: .PQexec
ld: 0711-317 ERROR: Undefined symbol: .PQclear
ld: 0711-317 ERROR: Undefined symbol: .PQresultErrorField
ld: 0711-317 ERROR: Undefined symbol: .PQsetdbLogin
ld: 0711-317 ERROR: Undefined symbol: .PQstatus
ld: 0711-317 ERROR: Undefined symbol: .PQsetNoticeReceiver
ld: 0711-317 ERROR: Undefined symbol: .PQerrorMessage
ld: 0711-317 ERROR: Undefined symbol: .last_path_separator
collect2: ld returned 8 exit status
gmake[4]: *** [libecpg_compat.so] Error 1
gmake[4]: Leaving directory `/usr/local/postgres/pgsql/src/interfaces/ecpg/compatlib'

horwitz(at)argoscomp(dot)com (Samuel A Horwitz)