 path.
     </P
><P
>      Failure to specify the correct option to the compiler will
      result in an error message such as:
</P><PRE
CLASS="SCREEN"
>testlibpq.c:8:22: libpq-fe.h: No such file or directory</PRE
><P>
     </P
></LI
><LI
><P
>      When linking the final program, specify the option
      <TT
CLASS="LITERAL"
>-lpq</TT
> so that the <SPAN
CLASS="APPLICATION"
>libpq</SPAN
>
      library gets pulled in, as well as the option
      <TT
CLASS="LITERAL"
>-L<TT
CLASS="REPLACEABLE"
><I
>directory<