Re: Using C API

On 10 Oct 2007, at 02:25, pgsql(dot)gen(at)tuxbeagle(dot)com wrote:

> I was trying this example program out of a well known postgresql
> book and keep getting errors whenever I try to compile.
>
> Error messages ##make client1
>
> 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
> make: *** [client1] Error 1
> ---------------------------------------------------------
>
>

you must add -lpq too your LDFLAGS
in order to link the lib you only have the linker paths set in LDFLAGS

it should read like this then:
cc -g client1.o -L /usr/lib -L /usr/lib/pgsql -o client1 -lpq

--

Viele Grüße,
Lars Heidieker

lars(at)heidieker(dot)de
http://paradoxon.info

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