og.c</PRE
><P>
      If you are using makefiles then add the option to the
      <TT
CLASS="VARNAME"
>CPPFLAGS</TT
> variable:
</P><PRE
CLASS="PROGRAMLISTING"
>CPPFLAGS += -I/usr/local/pgsql/include</PRE
><P>
     </P
><P
>      If there is any chance that your program might be compiled by
      other users then you should not hardcode the directory location
      like that.  Instead, you can run the utility
      <TT
CLASS="COMMAND"
>pg_config</TT
> to find out where the header
      files are on the local