Re: dlsym(...) and Intel Macs
Re: dlsym(...) and Intel Macs
- Subject: Re: dlsym(...) and Intel Macs
- From: Graham J Lee <email@hidden>
- Date: Tue, 18 Jul 2006 20:08:00 +0100
On 18/7/06 04:35, Eric Albert wrote:
On Jul 17, 2006, at 8:29 PM, Damien Sorresso 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:
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
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/
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