gfortran for lion
On Aug 6, 2011, at 10:33 AM, Jaffe, Andrew H wrote:
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.
I'm not on Lion right now so I'll check later, but I don't think I'll be re-packaging it for that ;).
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?
It does - your'e using Apple's gcc 4.2.1 with Fortran front-end from gcc 4.2.4 (i.e. the back-end is still gcc-4.2.1). Obviously, it's something that the authors didn't anticipate so there is no provision for labeling that mix ;) - the build simply shows the branch version which is gcc-4.2.1 5666.3. Given that Apple has no Fortran in their branch, there is really no "corresponding" Fortran. Cheers, Simon
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