Off topic, but I thought someone on the list might know the answer, and it is a worthy cause.
Begin forwarded message:
> From: Prof Brian Ripley <ripley@...>
> Subject: [R-SIG-Mac] Building binary packages for distribution
> Date: April 13, 2012 8:36:53 AM PDT
> To: "r-sig-mac@..." <r-sig-mac@...>
> I have hitherto used a Leopard system to build Mac binary packages for distribution, but that system has died and we only have Lion systems left (and the replacement hardware only runs Lion). I'm only concerned with building i386/x86_64 packages.
> We saw problems with packages built on Snow Leopard which would not run on Leopard, and the trick was to use -mmacosx-version-min=10.5 for compiling and linking.
> Does anyone know for certain if that suffices? And does setting the environment variable MACOSX_DEPLOYMENT_TARGET to 10.5 do the same thing? (My man pages suggest so, but I don't trust Apple's documentation to be current.)
> Brian Ripley
> Brian D. Ripley, ripley@... > Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ > University of Oxford, Tel: +44 1865 272861 (self)
> 1 South Parks Road, +44 1865 272866 (PA)
> Oxford OX1 3TG, UK Fax: +44 1865 272595
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