You have forgotten to implement (or perhaps to link) the first virtual
function in the Neuron
class. Several compilers generate the RTTI type info for a class at the point where the first virtual function is implemented. If you forget to implement that function, no type info is generated and linking fails.
Eerie Error while linking files c++
Frage
Help! I have three classes; Point, Neuron, and CumulativeNeuron. And I have source file neurones.cpp. when I link my files it says:
~/Desktop/assign-8$ g++ point.o neuron.o cumulativeNeuron.o neurones.o
cumulativeNeuron.o:(.rodata._ZTI16CumulativeNeuron[_ZTI16CumulativeNeuron]+0x10): undefined reference to `typeinfo for Neuron'
collect2: error: ld returned 1 exit status
I can't understand this error! please help Thanks.
Lösung
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