compiling error of graphchi

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XL

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Nov 20, 2014, 5:52:54 AM11/20/14

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Hi,

The following is the error I got when I compiled my code on redhat. But there is no error when I tried it on Centos. Does anyone know how to correct it? Thanks!!!

g++ -g -O3 -I/usr/local/include/ -I./src/ -fopenmp -Wall -Wno-strict-aliasing -Iexample_apps/ example_apps/communitydetection_st.cpp -o bin/example_apps/communitydetection_st -lz

example_apps/communitydetection_st.cpp: In function ‘int main(int, const char**)’:

example_apps/communitydetection_st.cpp:249: error: cannot declare variable ‘callback’ to be of abstract type ‘OutputVertexCallback’

example_apps/communitydetection_st.cpp:201: note: because the following virtual functions are pure within ‘OutputVertexCallback’:

./src/api/vertex_aggregator.hpp:55: note: void graphchi::VCallback<VertexDataType>::callback(graphchi::vid_t, VertexDataType&) [with VertexDataType = unsigned int]

example_apps/communitydetection_st.cpp:250: error: no matching function for call to ‘foreach_vertices(std::string&, int, size_t, OutputVertexCallback&, FILE*&)’