From Qt3 to Qt4 : issues with internal classes ( Q3GList & Q3PtrCollection )

Question

I'm updating a code from Qt3 to Qt4. I used qt3to4 porting tool, and it fixed some of my issues. But a few errors are remaining:

g++ -m64 -Wl,-O1 -o CONVECTION_DYN_CODE_version_initiale Convection_points.o Convection_points_prof.o glbox.o globjwin.o main.o algebra.o evector.o matrix.o matrix4.o quaternion.o write_binary.o write_binary_normals.o moc_glbox.o moc_globjwin.o   -L/usr/lib/x86_64-linux-gnu -L/usr/X11R6/lib64 -lQtOpenGL -lQtGui -lQtCore -lGLU -lglut -lGL -lpthread -lCGAL -fp-model -lboost_thread -lgmp
glbox.o:(.rodata._ZTI7Q3GList[typeinfo for Q3GList]+0x10): undefined reference to `typeinfo for Q3PtrCollection'

&

glbox.o:(.rodata._ZTV7Q3GList[vtable for Q3GList]+0x18): undefined reference to `Q3GList::clear()'
glbox.o:(.rodata._ZTV7Q3GList[vtable for Q3GList]+0x20): undefined reference to `Q3GList::~Q3GList()'
glbox.o:(.rodata._ZTV7Q3GList[vtable for Q3GList]+0x28): undefined reference to `Q3GList::~Q3GList()'
glbox.o:(.rodata._ZTV7Q3GList[vtable for Q3GList]+0x30): undefined reference to `Q3PtrCollection::newItem(void*)'
...

Both Q3GList and Q3PtrCollection are internal classes. I added the corresponding headers but I still got these errors. I don't know how to fix it since it seems to be internal issues.

Any ideas?

Answer 1

You should also link against qt3support module.

Add

QT += qt3support

to your project settings.