On Aug 24, 2013, at 8:00, Ryan Schmidt <[email protected]> wrote:
> > On Aug 24, 2013, at 07:29, Samuel Halliday wrote: > >> I'm using the macports distro of gcc in order to get fortran support. >> >> Could somebody please show me how to build universal binaries that work on >> the four targets: PPC/Intel 32/64? >> >> I presume I'll need to get this fixed: >> >> $ file /opt/local/lib/libgcc/libgfortran.3.dylib >> /opt/local/lib/libgcc/libgfortran.3.dylib: Mach-O 64-bit x86_64 dynamically >> linked shared library > > Edit /opt/local/etc/macports/macports.conf and set universal_archs to x86_64 > i386 ppc64 ppc. Then reinstall libgcc with the universal variant. And maybe > the gcc port you're using too. If you already had any ports installed using > the universal variant they'll have to be rebuilt using the new set of > architectures. Not sure if MacPorts will do that for you automatically or not. > > I would expect that modern versions of OS X cannot build for PowerPC anymore, > so you'll need to be running as sufficiently old version of OS X. Lion and > later are too new. Snow Leopard is probably old enough. Leopard is definitely > old enough. Tiger is too old to build 64-bit in some cases. If you're on SL, you'll need to use the 10.5 SDK if you actually want ppc64 support. You probably don't want or need ppc64 support (and ppc64 is likely horrifically broken in MacPorts), so I suggest using Snow Leopard with universal_archs to x86_64 i386 ppc. On Aug 24, 2013, at 15:07, Samuel Halliday <[email protected]> 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' Did you build it with the +universal variant? Also, I think FSF just aliases -arch to -mXXX. It does not seem to support multiple -arch options right: ~ $ gcc-mp-4.8 -arch x86_64 -c test.c ~ $ file test.o test.o: Mach-O 64-bit x86_64 object ~ $ gcc-mp-4.8 -arch x86_64 -arch i386 -c test.c ~ $ file test.o test.o: Mach-O i386 object ~ $ gcc-mp-4.8 -arch i386 -arch x86_64 -c test.c /var/folders/1b/f1bzh5152y9bvygzl07fn87m0000gn/T//cc7eJXt5.s:5:bad register name `%rbp' /var/folders/1b/f1bzh5152y9bvygzl07fn87m0000gn/T//cc7eJXt5.s:7:bad register name `%rsp' /var/folders/1b/f1bzh5152y9bvygzl07fn87m0000gn/T//cc7eJXt5.s:10:bad register name `%rbp' > 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 Yeah. You need to be on Snow Leopard if you want to compile for ppc. > So I'm concluding it is impossible to build universal fortran apps since the > apple gcc doesn't come with gfortran. That depends on what you mean by "universal". It's possible to build i386/x86_64 using gfortran plus lipo (look at the libgcc subport of gcc48 for example) > 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 just need the SDK. It's theoretically possible for you to use the 10.5 SDK on a modern system, but you'll need to build a ppc compiler. There's a chance that the apple-gcc42 port may work for you, but it will likely require a bit of massaging (patches welcome). --Jeremy
smime.p7s
Description: S/MIME cryptographic signature
_______________________________________________ macports-users mailing list [email protected] https://lists.macosforge.org/mailman/listinfo/macports-users
