Problems compiling qtoctave-0.7.1

[Donald MacKinnon]

I'm trying to compile qtoctave-0.7.1 under Mandriva 2007.0.
I've imported the qt4.1.4 rpm files for 2007 from the Mandriva site.
The configuration runs successfully.
The compilation fails to find the header file for QCompleter in the file 
codeedit.h . I've included all the lib...devels I can find.
From the makefile printout below, can anyone suggest where I can find 
the missing header file.

cd qtoctave; /usr/bin/gmake
gmake[1]: Entering directory 
`/home/donald/octave-3.0.0/qtoctave-0.7.1/qtoctave'
g++ -c -pipe -O2 -Wall -W -D_REENTRANT  -DUSER_CONFIG -DQT_NO_DEBUG 
-DQT_XML_LIB -DQT_GUI_LIB -DQT_CORE_LIB -DQT_SHARED 
-I/usr/lib/qt4/mkspecs/linux-g++ -I. -I/usr/lib/qt4/include/QtCore 
-I/usr/lib/qt4/include/QtGui -I/usr/lib/qt4/include/QtXml 
-I/usr/lib/qt4/include -I. -Iprojects -Ioperations -Idynamic_help -I. 
-I. -o codeedit.o codeedit.cpp
In file included from codeedit.cpp:20:
codeedit.h:26:22: error: QCompleter: No such file or directory
codeedit.h:36: error: ‘QCompleter’ does not name a type
codeedit.cpp: In constructor ‘CodeEdit::CodeEdit(QWidget*, QString)’:
:

Thanks for any helpful suggestions.
Donald