[R-SIG-Mac] gfortran for lion

[Jaffe, Andrew H]

Dear Simon,

On 6 Aug 2011, at 15:17, Simon Urbanek wrote:

> On Aug 3, 2011, at 7:19 AM, Jaffe, Andrew H wrote:
> 
>> I was attempting to install the latest gfortran for OS X 10.7 Lion. 
>> 
>> I note that there is an Xcode add-on version for Lion. Its readme screen does indeed claim that this "GNU Fortran 4.2.4 for Xcode 4.1".
>> 
>> However:
>> 
>> * the "file list" in the package says "GNU Fortran 4.2.4 for Xcode 3.2.3" 
>> * the files themselves are labelled ./usr/bin/i686-apple-darwin11-gfortran-4.2.1.
>> * gfortran --version gives "GNU Fortran (GCC) 4.2.1 (Apple Inc. build 5666) (dot 3)"
>> 
>> So, which is it? (And can/should I use the old 2008 CRAN version instead?)
>> 
> 
> I have no idea what you mean by "file list", but everything else is exactly as it should be. It's GNU Fortran 4.2.4 compiled in Apple's gcc 4.2.1 (build 5666.3) branch - which is what Xcode 4.1 is (see gcc-4.2 --version).

Thanks for the clarification. 

By "file list" I meant what you get from the menu item "Show Files" in the installer. 

But I admit that it's all still a bit confusing. Nowhere does it say "4.2.4", just "4.2.1" which I think I now understand is the gcc version used to compile it, not the gfortran version. Should "--version" give the version of the program you're using?

> You can use either (as the post said). The differences from the CRAN Fortran are the same as for any of the Leopard and Snow Leopard Xcode add-ons, nothing changed since.
> 
> Cheers,
> Simon

Yours,

Andrew