Qt 4.0.0 and 4.0.1, /usr/bin/ld: cannot find -lXext

["ptkacz@cogeco.ca" <ptkacz@cogeco.ca>]

I just recently installed the 64-bit version of Debian.  Following this I 
installed Qt 3.3.3 successfully.  No issues were encountered during 
configuration and make.  After configuring both Qt 4.0.1 and 4.0.0,
during make, I get the following error message,


g++ -Wl,-rpath,/usr/local/Trolltech/Qt-4.0.0/lib 
-Wl,-rpath,/usr/local/Trolltech/Qt-4.0.0/lib -shared 
-Wl,-soname,libQtGui_debug.so.4 -o libQtGui_debug.so.4.0.0 
...
.obj/debug-shared/moc_qinputcontext.o .obj/debug-shared/moc_qximinputcontext_p.o .obj/debug-shared/qrc_qstyle.o  
-L/usr/X11R6/lib64 -L/tmp/qt-x11-commercial-desktop-4.0.0/lib -lXext -lX11 
-lm -lQtCore_debug-lpthread -ldl
/usr/bin/ld: cannot find -lXext
collect2: ld returned 1 exit status
make[3]: *** [../../lib/libQtGui_debug.so.4.0.0] Error 1
make[3]: Leaving directory `/tmp/qt-x11-commercial-desktop-4.0.0/src/gui'
...

It appears that all libraries have been installed.  On the 32-bit version of 
debian, I never ran into this issue.

Anyone have an idea of what's missing?


Peter