[R-SIG-Mac] Building binary packages for distribution

[Prof Brian Ripley]

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 at stats.ox.ac.uk
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