dyn.load error -- undefined symbol: ...

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.

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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