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R CMD check --force-multiarch does not install all the archs for testing

On Jun 28, 2011, at 3:01 PM, Herv? Pag?s wrote:

            
It does for two reasons: a) everything is built twice and b) package authors don't expect the necessity to support --libs-only if the package doesn't require separate build runs.

The cross-platform way is to not use --merge-multiarch but use --libs-only instead as needed (easy to check after the first arch run which will tell you whether it's needed or not). I suspect that --merge-multiarch is just a convenience shortcut (and it's unclear to me why it's Windows-only...).

Cheers,
Simon