g++ probelm (not wine)

[Bence Fejervari]

Hi,

I'm sorry for posting this problem to the list, but I'm slowly getting
mad.

So my problem:
rip:bentse:~/program/B-Tree $ )`g++': g++ BTree.cpp proba.cpp
SearchTree.cpp
/tmp/ccZwWxpf.o: In function `BT_BTree_c::BT_BTree_c(ST_BuildCompare_c
*)':
/tmp/ccZwWxpf.o(.text+0x19): undefined reference to `BT_BTree_c virtual
table'
/tmp/ccZwWxpf.o: In function `BT_BTree_c::~BT_BTree_c(void)':
/tmp/ccZwWxpf.o(.text+0x75): undefined reference to `BT_BTree_c virtual
table'
/tmp/ccZ9aNru.o: In function `ST_BuildCompare_c::ST_BuildCompare_c(void)':
/tmp/ccZ9aNru.o(.ST_BuildCompare_c::gnu.linkonce.t.(void)+0x8): undefined
reference to `ST_BuildCompare_c virtual table'
collect2: ld returned 1 exit status

All the classes are well defined (I checked them many times).
What does undefined reference to `BT_BTree_c virtual table' mean?

Bence

--
  Bence Fejervari
  bentse at sch.hu
  +36203431493