[Rd] r-devel fails tests for parallel

[Simon Urbanek]

On May 17, 2012, at 6:08 PM, Murray Stokely wrote:

> On Thu, May 17, 2012 at 8:09 AM, Prof Brian Ripley
> <ripley at stats.ox.ac.uk> wrote:
>> This is getting increasingly difficult.  GCC 4.6.x and 4.7.x detect a lot of
>> errors (especially C++ errors) that earlier versions did not -- and that
>> means CRAN gets a fair number of submissions that we cannot compile.  And
>> there have been a lot of optimization advances since 4.1.x.
> 
> I would also point out that clang has significantly better error detection and diagnostics compared to current GCC.  Installations stuck with old GCC releases for GPL3 reasons should really migrate to clang / llvm.
> 

The problem is that unfortunately clang is too incomplete for that -- it lacks Fortran and OpenMP support - both are quite important for R so migrating to clang is not realistic so far.

Cheers,
Simon