compiling c code in octave

[frank wang]

Hi,

 

I am using mkoctfile --mex file1.cpp file2.cpp to compile c code. The compiling is fine. However, when I try to use the file in octave, I got a strange error. Here is the output from octave.

 

which file1

error path/file1.mex:undefined symbol: _ZNSs4_Rep20_S_empty_rep_storageE

error: failed to install .mex file function `CTC_Dec'
which: `CTC_Dec' is the script file

 

I have looked in my file, I cannot see to use the strange name:_ZNSs4_Rep20_S_empty_rep_storageE

 

Can anyone help me to figure out this error?

 

Thanks

 

Frank