LinuxQuestions.org - qt not found when compiling

I found an interesting thing on kde-look.org, and I wanted to try it out, so I downloaded it, and I got this from ./configure
Code:
[simon@localhost kbfx]$ ./configure --prefix=/usr

checking build system type... i686-redhat-linux-gnu

checking host system type... i686-redhat-linux-gnu

checking target system type... i686-redhat-linux-gnu

checking for a BSD-compatible install... /usr/bin/install -c

checking for -p flag to install... yes

checking whether build environment is sane... yes

checking for gawk... gawk

checking whether make sets $(MAKE)... yes

checking for style of include used by make... GNU

checking for gcc... gcc

checking for C compiler default output file name... a.out

checking whether the C compiler works... yes

checking whether we are cross compiling... no

checking for suffix of executables...

checking for suffix of object files... o

checking whether we are using the GNU C compiler... yes

checking whether gcc accepts -g... yes

checking for gcc option to accept ANSI C... none needed

checking dependency style of gcc... gcc3

checking how to run the C preprocessor... gcc -E

checking for g++... g++

checking whether we are using the GNU C++ compiler... yes

checking whether g++ accepts -g... yes

checking dependency style of g++... gcc3

checking whether g++ supports -Wmissing-format-attribute... yes

checking whether g++ supports -Wundef... yes

checking whether g++ supports -Wno-long-long... yes

checking whether g++ supports -Wnon-virtual-dtor... yes

checking whether g++ supports -fno-exceptions... yes

checking whether g++ supports -fno-check-new... yes

checking whether g++ supports -fno-common... yes

checking whether g++ supports -fexceptions... yes

checking how to run the C++ preprocessor... g++ -E

checking whether g++ supports -O0... yes

checking whether g++ supports -Wl,--no-undefined... yes

checking whether g++ supports -Wl,--allow-shlib-undefined... yes

not using lib directory suffix

checking for a sed that does not truncate output... /bin/sed

checking for egrep... grep -E

checking for ld used by gcc... /usr/bin/ld

checking if the linker (/usr/bin/ld) is GNU ld... yes

checking for /usr/bin/ld option to reload object files... -r

checking for BSD-compatible nm... /usr/bin/nm -B

checking whether ln -s works... yes

checking how to recognise dependent libraries... pass_all

checking for ANSI C header files... yes

checking for sys/types.h... yes

checking for sys/stat.h... yes

checking for stdlib.h... yes

checking for string.h... yes

checking for memory.h... yes

checking for strings.h... yes

checking for inttypes.h... yes

checking for stdint.h... yes

checking for unistd.h... yes

checking dlfcn.h usability... yes

checking dlfcn.h presence... yes

checking for dlfcn.h... yes

checking for g77... no

checking for f77... no

checking for xlf... no

checking for frt... no

checking for pgf77... no

checking for fort77... no

checking for fl32... no

checking for af77... no

checking for f90... no

checking for xlf90... no

checking for pgf90... no

checking for epcf90... no

checking for f95... no

checking for fort... no

checking for xlf95... no

checking for ifc... no

checking for efc... no

checking for pgf95... no

checking for lf95... no

checking for gfortran... no

checking whether we are using the GNU Fortran 77 compiler... no

checking whether  accepts -g... no

checking the maximum length of command line arguments... 32768

checking command to parse /usr/bin/nm -B output from gcc object... ok

checking for objdir... .libs

checking for ar... ar

checking for ranlib... ranlib

checking for strip... strip

checking if gcc static flag  works... yes

checking if gcc supports -fno-rtti -fno-exceptions... no

checking for gcc option to produce PIC... -fPIC

checking if gcc PIC flag -fPIC works... yes

checking if gcc supports -c -o file.o... yes

checking whether the gcc linker (/usr/bin/ld) supports shared libraries... yes

checking whether -lc should be explicitly linked in... no

checking dynamic linker characteristics... GNU/Linux ld.so

checking how to hardcode library paths into programs... immediate

checking whether stripping libraries is possible... yes

checking for shl_load... no

checking for shl_load in -ldld... no

checking for dlopen... no

checking for dlopen in -ldl... yes

checking whether a program can dlopen itself... yes

checking whether a statically linked program can dlopen itself... yes

checking if libtool supports shared libraries... yes

checking whether to build shared libraries... yes

checking whether to build static libraries... no

configure: creating libtool

appending configuration tag "CXX" to libtool

checking for ld used by g++... /usr/bin/ld

checking if the linker (/usr/bin/ld) is GNU ld... yes

checking whether the g++ linker (/usr/bin/ld) supports shared libraries... yes

checking for g++ option to produce PIC... -fPIC

checking if g++ PIC flag -fPIC works... yes

checking if g++ supports -c -o file.o... yes

checking whether the g++ linker (/usr/bin/ld) supports shared libraries... yes

checking dynamic linker characteristics... GNU/Linux ld.so

checking how to hardcode library paths into programs... immediate

checking whether stripping libraries is possible... yes

checking for shl_load... (cached) no

checking for shl_load in -ldld... (cached) no

checking for dlopen... (cached) no

checking for dlopen in -ldl... (cached) yes

checking whether a program can dlopen itself... (cached) yes

checking whether a statically linked program can dlopen itself... (cached) yes

appending configuration tag "F77" to libtool

checking for msgfmt... /usr/bin/msgfmt

checking for gmsgfmt... /usr/bin/msgfmt

checking for xgettext... /usr/bin/xgettext

checking if C++ programs can be compiled... yes

checking for strlcat... no

checking if strlcat needs custom prototype... yes - in libkdefakes

checking for strlcpy... no

checking if strlcpy needs custom prototype... yes - in libkdefakes

checking for main in -lutil... yes

checking for main in -lcompat... no

checking for crypt in -lcrypt... yes

checking for socklen_t... socklen_t

checking for dnet_ntoa in -ldnet... no

checking for dnet_ntoa in -ldnet_stub... no

checking for inet_ntoa... yes

checking for connect... yes

checking for remove... yes

checking for shmat... yes

checking for sys/types.h... (cached) yes

checking for stdint.h... (cached) yes

checking for poll in -lpoll... no

checking CoreAudio/CoreAudio.h usability... no

checking CoreAudio/CoreAudio.h presence... no

checking for CoreAudio/CoreAudio.h... no

checking if res_init needs -lresolv... yes

checking if res_init is available... yes

checking for killpg in -lucb... no

checking for int... yes

checking size of int... 4

checking for short... yes

checking size of short... 2

checking for long... yes

checking size of long... 4

checking for char *... yes

checking size of char *... 4

checking for dlopen in -ldl... (cached) yes

checking for shl_unload in -ldld... no

checking for size_t... yes

checking size of size_t... 4

checking for unsigned long... yes

checking size of unsigned long... 4

checking sizeof size_t == sizeof unsigned long... yes

checking crt_externs.h usability... no

checking crt_externs.h presence... no

checking for crt_externs.h... no

checking for _NSGetEnviron... no

checking for vsnprintf... yes

checking for snprintf... yes

checking for X... libraries /usr/X11R6/lib, headers /usr/X11R6/include

checking for IceConnectionNumber in -lICE... yes

checking for libXext... yes

checking for pthread_create in -lpthread... yes

checking for extra includes... no

checking for extra libs... no

checking for libz... -lz

checking for libpng... -lpng -lz -lm

checking for libjpeg6b... no

checking for libjpeg... -ljpeg

checking for perl... /usr/bin/perl

checking for Qt... configure: error: Qt (>= Qt 3.0) (headers and libraries) not found. Please check your installation!

For more details about this problem, look at the end of config.log.

[simon@localhost kbfx]$
So I recompiled QT 3.3, and got the same thing. What can I do?