Can someone with a Mac go ahead and check in /Library/Frameworks/R.framework/Resources/etc/x86_64/Makeconf and confirm that the values for SHLIB_OPENMP_CFLAGS are empty when running R 2.13.1 and set to "-fopenmp" when running R 2.13.0? I 99% believe this is bug, but I just want independent confirmation  before I report this behavior.

--Michael

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