Ok, thanks. In that case I'll abandon the idea of supporting PPC. It sounds like there would be too much tweaking of mac ports above and beyond the SO instructions for obtaining a PPC SDK.
Btw, I don't really care about LIPO. I would be happy with four binaries of my project. Kind regards, Sam Halliday -- Sent from my iPhone On 25 Aug 2013, at 16:33, Jeremy Huddleston Sequoia <[email protected]> wrote: > > On Aug 25, 2013, at 4:21, Samuel Halliday <[email protected]> wrote: > >> Thanks all, >> >> In order to build a ppc gfortran app, I need the Xcode 3 PPC compiler (I >> think that's what a lot of these comments have been about). There is a SO >> thread about how to do this: >> >> http://stackoverflow.com/questions/5333490 >> >> But once I have my universal gcc48 (not apple-gcc*), it would appear that >> the -arch flags must be passed one at a time. BTW, it seems the default >> gcc48 can build 32 bit fortran apps (even though it's a x86_64 build) but >> can't link them (hence the need for "gcc48 +universal"). >> >> Before I embark on the insane mission of obtaining xcode3 ppc compilers, can >> somebody confirm for me if the "gcc48 +universal" (with universal including >> ppc) will be able to compile ppc binaries using "-arch ppc"? > > No, it won't. +universal in the gcc ports means i386/x86_64 or ppc/ppc64: > > platform powerpc { > configure.universal_archs ppc ppc64 > } > platform i386 { > configure.universal_archs i386 x86_64 > } > > If you want to fix that, you'll need to bring the Apple gcc driver driver > into the gccXX ports and update those ports to build once for ppc and then > again for i386 ... see the apple-gcc42 port for how this is done as well as > the driver driver source code. > >> * one could edit >> https://trac.macports.org/browser/trunk/dports/lang/apple-gcc42/Portfile to >> include the fortran language, but I'd rather not get into customising >> portfiles. Besides, I thought apple used LLVM nowadays. > > You're not going to solve this without either: > 1) Moving to Snow Leopard or earlier (so you can have a MacPorts ppc > runtime, so you can have a gfortran compiler that produces ppc code) > 2) Making a darwin-ppc cross compiler (again, not in MacPorts, but our > assembler (cctools) and linker (ld64) should work for you) > 3) Adding fortran support to apple-gcc42 (and using the 10.5 or 10.4u SDK) > 4) Adding support for generating ppc code with the gccXX ports when running > on intel > > You're going to need to change around Portfiles or do a lot by hand to solve > this problem. > > Alternatively, you could have a SL or Leopard machine do the ppc bits and a > ML machine do the i386/x86_64 bits. Then just lipo them all together into > the final executable. This is essentially how I build the host support > library that is shipped with quartz-wm. > > --Jeremy > _______________________________________________ macports-users mailing list [email protected] https://lists.macosforge.org/mailman/listinfo/macports-users
