Compilation problem on x86_64

All:

I am running into a link problem trying to compile guarddog 2.4.0 on Fedora 
Core 4 system on the x86_64 architecture. Error is provided below. I'm 
assuming I'm missing a dependency but have not been able to determine exactly 
what. configure executes fine with no problems.

Thanks in advance for the help

-steve

make[2]: Entering directory `/export/home/snesbitt/tmp/guarddog-2.4.0/src'
/bin/sh ../libtool --silent --mode=link 
g++  -Wnon-virtual-dtor -Wno-long-long -Wundef -Wall -W -Wpointer-arith -Wwrite-strings -ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wconversion -Wchar-subscripts -O2 -Wformat-security -Wmissing-format-attribute -fno-exceptions -fno-check-new -fno-common   -o 
guarddog -R /usr/lib64 -R /usr/lib64/qt-3.3/lib -R /usr/X11R6/lib64 -L/usr/X11R6/lib64 -L/usr/lib64/qt-3.3/lib -L/usr/lib64  
main.o guarddog.o checktablelistitem.o commandrunner.o guarddogdoc.o 
iprange.o protocoldb.o simelineedit.o userdefinedprotocol.o -lkio -lkdeprint
guarddog.o(.text+0xc): In function 
`AddressValidator::AddressValidator(QWidget*, char const*)':
guarddog.cpp: undefined reference to `vtable for AddressValidator'
guarddog.o(.text+0x2c): In function 
`AddressValidator::AddressValidator(QWidget*, char const*)':
guarddog.cpp: undefined reference to `vtable for AddressValidator'
guarddog.o(.text+0x43): In function `AddressValidator::~AddressValidator()':
guarddog.cpp: undefined reference to `vtable for AddressValidator'
guarddog.o(.text+0x53): In function `AddressValidator::~AddressValidator()':
guarddog.cpp: undefined reference to `vtable for AddressValidator'
guarddog.o(.text+0x67): In function `AddressValidator::~AddressValidator()':
guarddog.cpp: undefined reference to `vtable for AddressValidator'
guarddog.o(.text+0x8c): In function 
`InterfaceNameValidator::InterfaceNameValidator(QWidget*, char const*)':
guarddog.cpp: undefined reference to `vtable for InterfaceNameValidator'
guarddog.o(.text+0xac): In function 
`InterfaceNameValidator::InterfaceNameValidator(QWidget*, char const*)':
guarddog.cpp: undefined reference to `vtable for InterfaceNameValidator'
guarddog.o(.text+0xc3): In function 
`InterfaceNameValidator::~InterfaceNameValidator()':
guarddog.cpp: undefined reference to `vtable for InterfaceNameValidator'
guarddog.o(.text+0xd3): In function 
`InterfaceNameValidator::~InterfaceNameValidator()':
guarddog.cpp: undefined reference to `vtable for InterfaceNameValidator'
guarddog.o(.text+0xe7): In function 
`InterfaceNameValidator::~InterfaceNameValidator()':
guarddog.cpp: undefined reference to `vtable for InterfaceNameValidator'
guarddog.o(.text+0x2f1a): In function `GuarddogApp::GuarddogApp(QString 
const&)':
guarddog.cpp: undefined reference to `vtable for GuarddogApp'
guarddog.o(.text+0x2f22):guarddog.cpp: undefined reference to `vtable for 
GuarddogApp'
guarddog.o(.text+0x30fa): In function `GuarddogApp::GuarddogApp(QString 
const&)':
guarddog.cpp: undefined reference to `vtable for GuarddogApp'
guarddog.o(.text+0x3102):guarddog.cpp: undefined reference to `vtable for 
GuarddogApp'
guarddog.o(.text+0x3233): In function `GuarddogApp::~GuarddogApp()':
guarddog.cpp: undefined reference to `vtable for GuarddogApp'
guarddog.o(.text+0x323b):guarddog.cpp: more undefined references to `vtable 
for GuarddogApp' follow
commandrunner.o(.text+0x2fb): In function 
`CommandRunner::CommandRunner(QWidget*, char const*)':
commandrunner.cpp: undefined reference to `vtable for CommandRunner'
commandrunner.o(.text+0x303):commandrunner.cpp: undefined reference to `vtable 
for CommandRunner'
commandrunner.o(.text+0x5cb): In function 
`CommandRunner::CommandRunner(QWidget*, char const*)':
commandrunner.cpp: undefined reference to `vtable for CommandRunner'
commandrunner.o(.text+0x5d3):commandrunner.cpp: undefined reference to `vtable 
for CommandRunner'
commandrunner.o(.text+0x7f7): In function `CommandRunner::~CommandRunner()':
commandrunner.cpp: undefined reference to `vtable for CommandRunner'
commandrunner.o(.text+0x7ff):commandrunner.cpp: more undefined references to 
`vtable for CommandRunner' follow
collect2: ld returned 1 exit status
make[2]: *** [guarddog] Error 1


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