Re: Using C API

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От Lars Heidieker
Тема Re: Using C API
Дата
Msg-id D22F7145-891A-4F79-84C1-59CCF8904E2D@heidieker.de
обсуждение исходный текст
Ответ на Using C API  (pgsql.gen@tuxbeagle.com)
Список pgsql-general
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On 10 Oct 2007, at 02:25, pgsql.gen@tuxbeagle.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


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