Here's what Steve said

On 20-03-2011, at 20:49, Tracy Lightcap wrote:

Simon:

I sent part of your post to Steve Jobs and he wrote back (!). Here's
what he said. Is he still dancing around the issue about gfortran?

I would say yes.
Can Apple guarantee that Intel Fortran and Apple's C compiler coexist and cooperate flawlessly?
Anyone using R on the Mac and wishing to compile R and/or develop packages with some Fortran would have to get the Intel Fortran compiler according to Job's recommendation. If I'm correct, Intel's compiler are not cheap. Most of us wouldn't want to spend that kind of money.

If and when a transition is necessary, then we'll just have to hope that Simon finds a way of making gfortran usable in the new setup.

As long as we can use Xcode 3, there shouldn't be a problem.

To be honest, I don't think Apple really cares about things such as R.

The ultimate alternative would be to ditch Mac OS X and change to 
something else.

Apologies for the rant but I really do feel that Apple is behaving stupidly and shortsightedly in this case.

Berend

Tracy

Begin forwarded message:

From: Steve Jobs <sjobs at apple.com>
Date: March 20, 2011 3:29:01 PM EDT
To: "tlightcap at lagrange.edu" <tlightcap at lagrange.edu>
Subject: Fwd: R and your stance on Fortran

Xcode 4 (and our general evolution away from gcc to clang/LLVM)
does not change the availability of Fortran (or the R programming
language) on the Mac.  GNU will continue to distribute GCC (and
gfortran) for the Mac and code generated by that compiler will
continue to integrate with code built with our modern clang/LLVM
tools.  (As an aside, our recommended solution for Fortran on the
Mac has long been the Intel Fortran compiler -- it generates much
better performing code than GCC's Fortran).

Sent from my iPad

Begin forwarded message:

Resent-From: sjobs at apple.com
From: Tracy Lightcap <tlightcap at lagrange.edu>
Date: March 17, 2011 9:38:32 AM PDT
Resent-To: steve+sjobs2 at apple.com
To: steve at apple.com
Subject: R and your stance on Fortran

Steve:

I use R as my main stats engine, as do a lot of Mac users;
there's even a list serv for Mac R users. Now I read this in one
of the posts there:

As Brian (Ripley, professor of applied statistics, Oxford)
pointed out, R doesn't care. The only annoying part for me as a
Mac binary maintainer is that it means Apple has abandoned the
only branch that supported Fortran back-end, so in the future we
will not be able to provide native Fortran for Xcode. This has
been known for a while and Apple's stance is that they don't care
about Fortran, so in some (but not immediate) future we may be
back to the mess of mixing compilers.

Note that LLVM and clang don't really have any real benefits for
the R users so far. Tests suggest that they make some parts
slower and we could not measure any overall benefit (unlike let's
say on arm), so people were not rushing to llvm/clang so far.
Apple's move to llvm/clang is really based on a political
decision, not a technical one. The only benefit I see so far is
what Brian mentioned as well that some people will have to
realize that gcc is not the standard and can test on other
compilers to find their bugs.

Cheers,
Simon (Urbanek, statistics research, AT&T Labs)

Is it really true that Apple, a company that is alive today
largely due to its inroads in education, is willing to put the
distribution of the most rapidly growing statistics engine used
by academics in jeopardy because "? Apple's stance is that they
don't care about Fortran ?"? R has recently been adopted as the
official language by the Interuniversity Consortium for Political
and Social Research at the University of Michigan, the biggest
trainer of social science grad students in the country. It is
being adopted by universities and colleges, governments, and
research institutions at a staggering pace (the price is right,
you know). That the use of this extremely useful and powerful
application on the Macs in education should be put at risk by a
simple reluctance to not accommodate Fortran is not just unwise;
it's just plain silly.

Is Simon right? If he is, fix it. Now.

Tracy Lightcap
Professor and Chair
Department of Political Science
LaGrange College
601 Broad St.
LaGrange  GA  30240-2999
(O) tlightcap at lagrange.edu (H) altlamp at mindspring.com
706.880.8226
www.lagrange.edu/academics/political-science/faculty/tlightcap.aspx

Tracy Lightcap
Professor and Chair
Department of Political Science
LaGrange College
601 Broad St.
LaGrange  GA  30240-2999
(O) tlightcap at lagrange.edu (H) altlamp at mindspring.com
706.880.8226
www.lagrange.edu/academics/political-science/faculty/tlightcap.aspx




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