[Rd] Windows 64bit package build requires underscore hack?

From: Dominick Samperi <djsamperi_at_gmail.com>
Date: Mon, 05 Jul 2010 19:53:33 -0400


Hello,

After much tinkering I managed to build packages using the 64bit version of R with the help of hints from
http://www.murdoch-sutherland.com/Rtools/ and
http://www.stats.ox.ac.uk/~ripley/Win64/W64porting.html and
R-admin Manual.

But a hack was required, and this seems to be related to a comment about underscores at the end of the second reference above (but this comment is about FUTURE changes in R starting with 2.12.x, and I'm not sure how it applies to the current problem using 2.11.1).

If I simply follow the instructions of the first reference I get lots of "cannot export / symbol not defined" errors because by default the leading underscore is stripped off during the shared library build process, specifically, all names in tmp.def (created in share/winshlib.mk) do not contain a leading underscore.

If I modify share/winshlib.mk so that the leading underscore is not stripped everything works fine.

Have I missed some documentation explaining what is going on here?

Thanks,
Dominick

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