Re: undefined symbol PQconnectionNeedsPassword referenced by file pg_ctl.o

"Edmundo Robles L." <erobles(at)sensacd(dot)com(dot)mx> writes:
> Hi, i tried to compile postgres 8.3.13 but i got the next error:
> Undefined first referenced
> symbol in file
> PQconnectionNeedsPassword pg_ctl.o
> ERROR: Symbol referencing errors. No output written to pg_ctl

> cc -b elf -O pg_ctl.o -L../../../src/port -lpgport
> -L../../../src/interfaces/libpq -lpq -L../../../src/port -lpgport -lz
> -lreadline -lsocket -lm -o pg_ctl

> What library or object i missing???

Apparently you're trying to link against a pre-8.3 version of libpq.
I'd guess the linker is for some reason picking up an old library in
/usr/lib rather than the one in ../../../src/interfaces/libpq (if
indeed there is anything there).

regards, tom lane