Hi there,
I am using C++ Builder 5 to develop windows GUI interface for a R library package. I
have to pass R objects to and from C functions and also evaluate them within C
functions. But I always got linking error message of "unresolved external functions"
with those internal functions or macros defined in Rinternals.h file. I can not find
the reason.
I have included R.h and Rinternals.h, generated and added R.lib and R.def to the
project. It seems no effects. I tried to directly use structure member instead of a
macro, e.g. "LENGTH(OBJ)" with "((VECSEXP) (obj))->vecsxp.length", getting an error
"Symbol VECSEXP not defined".
I noticed when generating R.lib and .def file, it reported warning messages about some
duplicated functions within R.dll. But I am not sure whether it is the reason and how
to solve it.
I am using C++Builder 5, R 1.7.0.1 windows version, used impdef.exe and implib.exe to
generating lib and def files, and used VCL components to develop the windows
interfaces.
Can you pleased to give me some advices?
Edward
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