Re: dlsym(...) and Intel Macs
site_archiver@lists.apple.com Delivered-To: darwin-dev@lists.apple.com User-agent: Thunderbird 1.5.0.4 (Macintosh/20060530) On Jul 17, 2006, at 8:29 PM, Damien Sorresso wrote: pedagogue:~/devel/nextstep leeg$ file uname-q uname-q: Mach-O fat file with 4 architectures uname-q (for architecture i386): Mach-O executable i386 uname-q (for architecture ppc): Mach-O executable ppc uname-q (for architecture ppc64): Mach-O 64-bit executable ppc64 uname-q (for architecture m68k): Mach-O executable for m68k architecture On 18/7/06 04:35, Eric Albert wrote: On 17 Jul, 2006, at 10:16 PM, Eric Albert wrote: On Jul 17, 2006, at 8:08 PM, Damien Sorresso wrote: No, they're two separate binaries. (Trust me there's a good reason for this.) I hate to say this, but I don't quite trust you on that. :) What's the reason? I've seen an awful lot of cases over the past year where folks thought they needed separate binaries but I've yet to see one which actually did. Maybe you'll be the first.... Because the application I'm writing has to run on all versions of Panther, down to 10.3.0. (Part of its function is to make sure the user is up-to-date on point releases.) To compile a universal binary, you need to use gcc 4.0, and in order to run applications compiled with gcc 4.0, you must be running 10.3.9. How's that work for you? :) Not too well. :) You only need to use gcc 4.0 for the Intel side, but the PowerPC side of your binary can use any Mach-O compiler at all, including gcc 2.95.3 or even CodeWarrior. In fact, any Mach-O thin file for any operating system and any architecture can be combined in a fat file with any other, I think the only constraint is that the arch should differ. I used that in a demo: there's definitely no way that any gcc 4.x I've ever used can produce Mach-O files for the m68k ;-) -- Graham Lee UNIX Systems Manager, Oxford Physics Practical Course http://iamleeg.blogspot.com/ _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.appl... This email sent to site_archiver@lists.apple.com
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Graham J Lee