Qt 4.2.3 centos 5.0 - cannot find -lXext

Hello,

I am trying to compile the Qt 4.3.2. I configured using:
./configure -no-qt3support -qt-sql-sqlite -qt-zlib -qt-gif -qt-libpng -qt-libjpeg -no-xshape
COmpilation runs fine for a while then stumbles with:
/usr/bin/ld: cannot find -lXext
collect2: ld returned 1 exit status
gmake[2]: *** [../../lib/libQtGui.so.4.2.3] Error 1
gmake[2]: Leaving directory `/tmp/qt-x11-opensource-src-4.2.3/src/gui'
gmake[1]: *** [sub-gui-make_default] Error 2
gmake[1]: Leaving directory `/tmp/qt-x11-opensource-src-4.2.3/src'
gmake: *** [sub-src-make_default-ordered] Error 2

Any idea on what the problem might be?
Thank you

Yes, Xext library is not found :) Install package libxext6 or simmilar.

the command:
yum install libXext-devel.i386
seems to have solved the problem (still compiling though) and that library also took care of the missing XShape. Thanks