[R-SIG-Mac] factoids

Jan de Leeuw deleeuw at stat.ucla.edu
Fri Sep 18 10:34:51 CEST 2009

R-devel with recommended packages compiles (at breakneck speed)
with the new clang front-end that comes with XCode 3.2 in

Executables run at the same speed as those made with Apple's gcc-4.2
and GNU's gcc-4.5 (they are binary compatible) but in clang the C++
support is minimal and OpenMP is missing (of course GCD is available).

It also compiles with the new llvm-gcc, which does support
C++ and OpenMP.

I get a segmentation error with -O4, which turns on link-time

If I wanted you to understand it, I would have explained it  
                                          -- Johan Cruijff

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