[Rcpp-devel] Rcpp and C++ mangling

[Romain Francois]

Are you linking against the gretl library ?


Le 21 déc. 2012 à 12:12, jean.p at hushmail.com a écrit :

> hi,
> 
> a quick question regarding a Rcpp function I wrote using an external library (gretl) : 
> 
> with the help of a makefile (adapted from the convolution Rcpp example), the code compiles just fine and turns into a shared object in linux (.so file)
> 
> however, when I then try to load the newly created shared library into R using dyn.load, I get the following error message:
> 
> dyn.load("/home/jean/Documents/code experiments/gretl/test2.so")
> Error in dyn.load("/home/jean/Documents/code experiments/gretl/test2.so") : 
>   unable to load shared object '/home/jean/Documents/code experiments/gretl/test2.so':
>   /home/jean/Documents/code experiments/gretl/test2.so: undefined symbol: _Z13kalman_smoothP7kalman_PP13gretl_matrix_S3_Pi
> 
> The undefined symbol is in fact (after c++ unmangling) kalman_smooth(kalman_*, gretl_matrix_**, gretl_matrix_**, int*), a function from the gretl library
> 
> Do you think the problem comes from the c++ mangling of gretl's  C library or is it rather linked to internals of gretl ?
> 
> many thanks for your help!
> 
> jean
> 
> 
> 
> 
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