[Rd] dyn.load error -- undefined symbol: ...

[Duncan Temple Lang]

You should tell us what operating system you are working on.

If it is a Unix variant, you can use the command ldd:

    ldd interface.so

and see if and where it finds all the libraries against which you link.

(otool -L  on Mac OS X will give you similar information.)

Then make certain that the symbol N_VNew_Serial is defined in
one of those. You can find which symbols are available from
a library, etc. using the command nm -g


If you don't find your problem, you should post the
output from R CMD SHLIB ...  so that we can see
the link command and give you some suggestions as
to where to look.

   D.

nwew wrote:
> Dear R-developers,
> 
> I am working on an C interface to some c functions.
> I compiled the c file using R CMD SHLIB without any compilation errors. All 
> libs used are added to the LD_LIBRARY_PATH.
> 
> However dyn.load("interface.so")
> produces  undefined symbol: N_VNew_Serial;
> 
> which is defined in one of the libs I link against.
> Where, and how to start searching for the error?
> 
> Eryk
> 
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