     </P
><P
>      Error messages that point to problems in this area could look like
      the following:
</P><PRE
CLASS="SCREEN"
>testlibpq.o: In function `main':
testlibpq.o(.text+0x60): undefined reference to `PQsetdbLogin'
testlibpq.o(.text+0x71): undefined reference to `PQstatus'
testlibpq.o(.text+0xa4): undefined reference to `PQerrorMessage'</PRE
><P>
      This means you forgot <TT
CLASS="OPTION"
>-lpq</TT
>.
</P><PRE
CLASS="SCREEN"
>/usr/bin/ld: cannot find -lpq</PRE
><P>
      This means you for