[Rcpp-devel] Rcpp and C++ mangling
romain at r-enthusiasts.com
Fri Dec 21 13:04:19 CET 2012
Are you linking against the gretl library ?
Le 21 déc. 2012 à 12:12, jean.p at hushmail.com a écrit :
> 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!
> Rcpp-devel mailing list
> Rcpp-devel at lists.r-forge.r-project.org
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