r compiler to the directory where the <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
> header
      files were installed, by supplying the
      <TT
CLASS="LITERAL"
>-I<TT
CLASS="REPLACEABLE"
><I
>directory</I
></TT
></TT
> option
      to your compiler.  (In some cases the compiler will look into
      the directory in question by default, so you can omit this
      option.)  For instance, your compile command line could look
      like:
</P><PRE
CLASS="PROGRAMLISTING"
>cc -c -I/usr/local/pgsql/include testpr