ql-set.html"
>SET</A
>
   for information on correct values for these
   environment variables.
  </P
><P
>   The following environment variables determine internal behavior of
   <SPAN
CLASS="APPLICATION"
>libpq</SPAN
>; they override compiled-in defaults.

   <P
></P
></P><UL
><LI
><P
>      
      <TT
CLASS="ENVAR"
>PGSYSCONFDIR</TT
> sets the directory containing the
      <TT
CLASS="FILENAME"
>pg_service.conf</TT
> file and in a future version
      possibly other system-wide configuration files.
     