[R] Error in dyn.load

Philip Silva p.silva at gmx.net
Mon Sep 1 22:47:40 CEST 2003


I've created a shared library from including this code (with g++ 
-I/usr/local/lib/R/include -I/usr/local/include -c Rtest.cpp; g++ 
-shared -L/usr/local/lib -o Rtest.so Rtest.cpp):
void check_data (SEXP data) {
	int l=length (data);

But when I try to load it in R I get this error message:
unable to load shared library ...
  undefined symbol: _Z9Rf_lengthP7SEXPREC

How can I solve this problem?


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