In article <b673f8f2-3c21-4ea7-b5f7-2b33fd895...@gmail.com>, Samuel Halliday <sam.halli...@gmail.com> wrote: > On 24 Aug 2013, at 16:24, Ryan Schmidt wrote: > >> what command line arguments do I use to get universal builds in my own > >> projects? > > > > add all the -arch flags (e.g. "-arch x86_64 -arch i386 -arch ppc64 -arch > > ppc") > > > I'm guessing these instructions are for the apple gcc? Because doing this > with the gcc / gfortran that I've been installing with macports gives > > gcc-mp-4.8: error: unrecognized command line option '-arch' > > and trying to compile C code on Mountain Lion with the apple gcc gives > > llvm-gcc-4.2: error trying to exec > '/usr/bin/../llvm-gcc-4.2/bin/powerpc-apple-darwin11-llvm-gcc-4.2': execvp: > No such file or directory > llvm-gcc-4.2: error trying to exec > '/usr/bin/../llvm-gcc-4.2/bin/powerpc-apple-darwin11-llvm-gcc-4.2': execvp: > No such file or directory > > > So I'm concluding it is impossible to build universal fortran apps since the > apple gcc doesn't come with gfortran. My only hope would be to build separate > binaries for each architecture by: > > 1. access to old OS X machines (+ macports) > 2. cross compile > > I don't have access to old machines (and it would be incredibly inconvenient > in any case), and I'm guessing macports doesn't supply cross compilers for > older OS X architectures.
You *might* be able to build for all four architectures on Mountain LIon if you can successfully install a version of Xcode 3 (like 3.2.6) as a secondary Xcode and use the build tools and 10.5 SDK it provides. xcrun can help with this but I don't think MacPorts supports building with a non-installed SDK so you'd still be on your own. Another, more reliable option to consider is running an older version of OS X, like 10.5 server, as a virtual machine in VMware Fusion or similar. Be aware that the software license of 10.5 (non-server) prohibited use as a virtual client and Fusion does enforce that but the Interwebs tell of ways to get around that when running on a Mac host. -- Ned Deily, n...@acm.org _______________________________________________ macports-users mailing list macports-users@lists.macosforge.org https://lists.macosforge.org/mailman/listinfo/macports-users