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Editorial Team
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Asked: 2026-05-16T18:41:15+00:00

Working in Windows, I’ve created an r package that links to a c++ dll

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Working in Windows, I’ve created an r package that links to a c++ dll as a shared library. This works fine and installs without problems on Windows. When I switch to linux, however, the so is not found.

Am I right in thinking that the only file in the src directory should be the .cpp file?

Do I actually need to run the SHLIB command in that directory before I create the package?

In the NAMESPACE I use:

useDynLib(myc.cpp,my.c.function)

and in the function call:

my.r.f <- .Call(my.c.function, a, b)

On windows running R CMD check works fine. Could it be my linux R configuration that is to blame? It seems to install 3rd party packages fine.

I’m stumped!

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1 Answer

  1. Editorial Team

    I think you should just use useDynLib(myc)… The symbol lookup is done internally.
    EDIT: The other thing is the name of this object file — I think the standard makefile just names it with package name, so it should be rather useDynLib(<package name>). At least it always works for me.

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