Dear list,
For a package I'm developing (https://github.com/dahtah/imager/) I had
to write custom "as" and "wrap" functions for third-party classes. I'd
like to make these wrappers accessible to other developers via inline
C++ as well as LinkingTo directives (so that they can be used in other
packages).
So far I've only managed the former: I have a header file in
inst/include, called "wrappers.h", that contains the full
implementations of my custom as and wrap functions. I've written a
custom inline plugin and everything works fine. However, LinkingTo
doesn't work: wrappers.h gets included in multiple object files and I
get linking errors (the linker complains about multiple declarations of
"as" and "wrap").
I understand RcppArmadillo manages to get around the problem but I can't
figure out how. What's the correct way of doing this? Is there a way of
making as and wrap inline functions so that it's safe to have
header-only implementations?
Thanks!
Simon Barthelme
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