I am trying to compiled a rather complicated program. And I am constantly getting the error:
"undefined reference to `<x>'" where x is a function in a class. For example I have the file vizManager.cpp which has at the very top the statment #include "drawWindow.h". Within vizManager.cpp there is a call to create a drawWindow object through the line "drawWindow(this)". The vizManager.cpp file compiles perfectly fine but when it comes to linking with the line:
g++ -g -o iNSpect configFile.o eventBuilder.o vizNodeList.o vizNode.o vizLine.o iNSpect.o vizProperties.o simWindow.o toolkitWindow.o vizManager.o nodeStats.o -pthread -lgtk-x11-2.0 -lgdk-x11-2.0 -latk-1.0 -lgdk_pixbuf-2.0 -lm -lpangocairo-1.0 -lpango-1.0 -lcairo -lgobject-2.0 -lgmodule-2.0 -ldl -lgthread-2.0 -lglib-2.0 -Wl,--export-dynamic -lgtkglext-x11-1.0 -lgdkglext-x11-1.0 -lGLU -lGL -lgtk-x11-2.0 -lpangox-1.0 -lgdk-x11-2.0 -latk-1.0 -lgdk_pixbuf-2.0 -lm -lpangocairo-1.0 -lpango-1.0 -lcairo -lgobject-2.0 -lgmodule-2.0 -ldl -lglib-2.0
I get the following error;
vizManager.o: In function `~vizManager':/home/triff/inspect-triff-beta/src/vizManager.cpp:99: undefined reference to `drawWindow::~drawWindow()'
:/home/triff/inspect-triff-beta/src/vizManager.cpp:99: undefined reference to `drawWindow::~drawWindow()'
vizManager.o: In function `vizManager':/home/triff/inspect-triff-beta/src/vizManager.cpp:51: undefined reference to `drawWindow::drawWindow(vizManager*)'
:/home/triff/inspect-triff-beta/src/vizManager.cpp:84: undefined reference to `drawWindow::~drawWindow()'
:/home/triff/inspect-triff-beta/src/vizManager.cpp:51: undefined reference to `drawWindow::drawWindow(vizManager*)'
:/home/triff/inspect-triff-beta/src/vizManager.cpp:84: undefined reference to `drawWindow::~drawWindow()'
The only way I have found around this is by adding the following lines near the top of vizManager.cpp:
drawWindow::drawWindow(vizManager*)
{
}
drawWindow::~drawWindow()
{
}
This I don't think actually fixes the problem because then these functions are called do nothing and therefore cause a lot of errors.
Does anyone know what is going wrong? Is this a linking problem? Or a library problem? or something totally different. I suspect this is something to do with the fact I am trying to compile using GCC version 4.1.0 when the program was orginally written for an earlier version.
I would be very grateful for any help
Regards
Alex
