Re: Using C API

pgsql.gen@tuxbeagle.com writes:
> I was trying this example program out of a well known postgresql book and keep getting errors whenever I try to
compile.

> cc -g  -I /usr/include -I /usr/include/pgsql -I /usr/include/pgsql/server   -c -o client1.o client1.c
> cc -g  client1.o  -L /usr/lib -L /usr/lib/pgsql -o client1
> client1.o: In function `main':
> /root/PROGRAMMING/C_API/client1.c:10: undefined reference to `PQconnectdb'
> /root/PROGRAMMING/C_API/client1.c:11: undefined reference to `PQfinish'
> collect2: ld returned 1 exit status

You're missing "-lpq" in the link step.  I think most or all of those -I
and -L switches are useless, also.

            regards, tom lane