Hello,
The upstream tqtinterface uses by default a qt library path of
$QTDIR/lib$LIBDIRSUFFIX, but Qt uses lib instead of lib64 within its
"private" directory:
-with the default build options, both for qt3 and qt4
-in the Debian Squeeze qt3 package.
The patch attached to this e-mail solves this inconsistency and makes
TQt3 build successfully with default options on Slackware, without
specifying the Qt libdir.