March 2008 - Darwin-kernel - lists.apple.com

64 bit development -- Is mmap() of over 4GB possible on OS X 10.4/10.5?
by Jamil J. Weatherbee 10 Mar '08

10 Mar '08

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Re: dyld 2 questions
by mm w 08 Mar '08

08 Mar '08

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from:to:subject:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; bh=Y2T5oafJVSgGvT2FCe1MtJSoOZ8iVK+vDpWaH+7JnRg=; b=spfneVbQ99zxLyhGBWr2xXWFpkFy/vSDXqBKsVfBSNfztxQikd/tYjnjVnopiH6kes7HSn+NGgrR7QIaF9rYIhPC2UL+oTNuH2m9UgMCKSZ22O8ni7IxSgc+LcH8RYxf+p6ewmbVtM7nz4wFXfxkSdgMqYkzFLVcs1lrTgfge+0= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=kBBp0blMrX/CSGt7aMl21Gvvw1OxDY5czoXrArTXF9HiMC6ESyh6tNdHOb9K1LCUBHlhMdF9heXR2a5LHJ0c0O9LOpSrFl6zDe/rwAJCECInRsrhFeUXnioKL7Wd8ezz2gm+QbR2r59A66TAf19MPmBwEeaay43mikJHHuprv8Q= no it's really not at boottime imagine in a syslog loaded mach-o index 0 foo prog array {x86_64,i386} (mach-o [index 0 x86_64 code index 1 i386 code]) my question was related to runtime, if I could force to load i386 code rather than x86_64 code section I don't care to get the process, I wanted to know which section has been loaded yes and sure I know well everything that you try to express but it's realy out the box of my question Best Regards On Sat, Mar 8, 2008 at 11:54 AM, David Elliott <dfe(a)tgwbd.org> wrote: > Per-process: > arch -i386 foobar > > System-wide: > On x86-64 you can add -legacy to the boot-args nvram property (using > the nvram command-line tool). That will force the kernel to run in > i386 mode instead of x86-64 mode so you will not be able to run 64-bit > programs at all and everything including the kernel itself will run in > true i386 mode. > > In this situation, trying something like arch -x86_64 foobar will > totally fail since the CPU will not ever be in 64-bit mode. If that's > what you want, you can have it. It's also useful if you are trying to > run Darwin on certain CPUs like late-model Pentium 4 that pass the > startup checks in tsc.c, or at least did until Leopard's xnu removed > the check for CPU family 0xf (extended), but fail later on in kernel > startup because of a missing bcopy 64 commpage routine (which requires > Supplemental SSE3 which is not present on Pentium 4). > > -Dave > > > > > On Mar 8, 2008, at 2:16 PM, mm w wrote: > > > ha thank you, something that maches 8) > > my question was not related to gcc or compilation time > > > > it was related to runtime, so there is no way to force the OS to run > > in i386 mode, > > but as far I know, the mach-o loader is able to deal with it, i just > > wanted to know if it was possible > > to force it. > > > > thank you for your answers > > > > On Sat, Mar 8, 2008 at 11:11 AM, Shantonu Sen <ssen(a)apple.com> wrote: > >> System-wide? No. Not without recompiling your kernel. > >> > >> Shantonu > >> > >> Sent from my MacBook > >> > >> > >> > >> On Mar 8, 2008, at 11:08 AM, mm w wrote: > >> > >>> So, to make simple, imagine a wonderful OS running on 32 extend 64 > >>> arch, all the sources are fat i386/ x86_64 > >>> is it to possible to influence the prefered mode > >> > >>> _______________________________________________ > >>> Do not post admin requests to the list. They will be ignored. > >>> Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) > >>> Help/Unsubscribe/Update your Subscription: > >>> http://lists.apple.com/mailman/options/darwin-kernel/ssen > >>> %40apple.com > >>> > >>> This email sent to ssen(a)apple.com > >> > >> > > > > > > > > -- > > -mmw > > _______________________________________________ > > Do not post admin requests to the list. They will be ignored. > > Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) > > Help/Unsubscribe/Update your Subscription: > > http://lists.apple.com/mailman/options/darwin-kernel/dfe%40tgwbd.org > > > > This email sent to dfe(a)tgwbd.org > > -- -mmw _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com

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Re: dyld 2 questions
by David Elliott 08 Mar '08

08 Mar '08

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Per-process: arch -i386 foobar -Dave On Mar 8, 2008, at 2:16 PM, mm w wrote: ha thank you, something that maches 8) my question was not related to gcc or compilation time it was related to runtime, so there is no way to force the OS to run in i386 mode, but as far I know, the mach-o loader is able to deal with it, i just wanted to know if it was possible to force it. thank you for your answers System-wide? No. Not without recompiling your kernel. Shantonu Sent from my MacBook On Mar 8, 2008, at 11:08 AM, mm w wrote: So, to make simple, imagine a wonderful OS running on 32 extend 64 arch, all the sources are fat i386/ x86_64 is it to possible to influence the prefered mode -- -mmw _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/dfe%40tgwbd.org _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… System-wide: On x86-64 you can add -legacy to the boot-args nvram property (using the nvram command-line tool). That will force the kernel to run in i386 mode instead of x86-64 mode so you will not be able to run 64-bit programs at all and everything including the kernel itself will run in true i386 mode. In this situation, trying something like arch -x86_64 foobar will totally fail since the CPU will not ever be in 64-bit mode. If that's what you want, you can have it. It's also useful if you are trying to run Darwin on certain CPUs like late-model Pentium 4 that pass the startup checks in tsc.c, or at least did until Leopard's xnu removed the check for CPU family 0xf (extended), but fail later on in kernel startup because of a missing bcopy 64 commpage routine (which requires Supplemental SSE3 which is not present on Pentium 4). On Sat, Mar 8, 2008 at 11:11 AM, Shantonu Sen <ssen(a)apple.com> wrote: _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/ssen %40apple.com This email sent to ssen(a)apple.com This email sent to dfe(a)tgwbd.org This email sent to site_archiver(a)lists.apple.com

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Re: dyld 2 questions
by David Elliott 08 Mar '08

08 Mar '08

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com I'm sorry but I don't understand what you are asking to do. I thought you had two questions: - or - Now I have no clue what ha bon ho tu m.endiras tant, et les lapins ca pond des oeufs? -Dave On Mar 8, 2008, at 2:09 PM, mm w wrote: sorry David but it's really far away from my question, I know well everything what you said but it's not my question sorry thank you anyway On Mar 8, 2008, at 2:00 PM, mm w wrote: On Mar 8, 2008, at 12:34 PM, mm w wrote: Yes, which is why Terry told you to man arch. RTFM and you'll clearly get the answer about how you can force the OS to run a particular architecture. Oops. So I finally RTFM myself and find indeed it isn't the case.. file a bug. Use it like this: arch -i386 ls arch -ppc ls ... etc ... -Dave -- -mmw _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… 1) How do I force a given fat program to run with a specific architecture? Answer: run it with arch -arch_name /path/to/my/program 2a) How do I determine the architecture my program is running on Answer: Use a preprocessor definition since you know at compile time which architecture will be running. 2b) How do I determine from one process the architecture of another process Answer: use ps is supposed to mean. Sorry my french is a little rusty. I get that the second half of the sentence is probably an idiom (and the rabbits lay eggs) but the first half is beyond me. I'm guessing it's not endearing. And anyway, to explain myself further, what I thought was funny was that Terry thought you had already answered your own question (2a) and so gave a rather flippant answer. I'm going to assume that he missed the fact that you were unnecessarily using your own preprocessor definition when the compiler provides you one. But now I'm not laughing because I did answer your questions, assuming 1 and 2a were your questions, and you seem not to realize I did. On Sat, Mar 8, 2008 at 11:07 AM, David Elliott <dfe(a)tgwbd.org> wrote: On Sat, Mar 8, 2008 at 10:46 AM, David Elliott <dfe(a)tgwbd.org> wrote: + the question was not related to an app NO I could have SWORN though that somewhere the manpage did have that info. This email sent to site_archiver(a)lists.apple.com

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Re: dyld 2 questions
by mm w 08 Mar '08

08 Mar '08

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; bh=8B+wax9g2XhPX5rURzyXMDJaf3zlPLiohZZa3Mr6i6A=; b=fomW+BGG4i3/wPcWPwrJGEkxaIcKKRibAGXJcdV9OQE40o8Yj8Mtm8hMdQxrZENu5dOTsuWI63IyOYyDKtXEnGHwcSy/m5dcoVpPKMWj7g/T6sP7RyvB6EjaLEUvbSIjZX5+9YxgXOTCLfpZ0PZsn4eSXlUUm7kcSjnjJc5zHjA= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=ZdbZ5RIlDnIcF8wbE8DylKzw0U6FQUVnW/V5EJeoR6tjIFCuKTjf0OZPM9gGHqK++sUk62dn7amrJhnD4kgA5OgPEfJRyA/Do6dhDuu1nHF48HqW/2jc1AQI70X0z8K+gkIdyMrPyR9P5lrtQVG4O0khbSH8J1T4CEdfSg8KGno= ha thank you, something that maches 8) my question was not related to gcc or compilation time it was related to runtime, so there is no way to force the OS to run in i386 mode, but as far I know, the mach-o loader is able to deal with it, i just wanted to know if it was possible to force it. thank you for your answers On Sat, Mar 8, 2008 at 11:11 AM, Shantonu Sen <ssen(a)apple.com> wrote: > System-wide? No. Not without recompiling your kernel. > > Shantonu > > Sent from my MacBook > > > > On Mar 8, 2008, at 11:08 AM, mm w wrote: > > > So, to make simple, imagine a wonderful OS running on 32 extend 64 > > arch, all the sources are fat i386/ x86_64 > > is it to possible to influence the prefered mode > > > _______________________________________________ > > Do not post admin requests to the list. They will be ignored. > > Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) > > Help/Unsubscribe/Update your Subscription: > > http://lists.apple.com/mailman/options/darwin-kernel/ssen%40apple.com > > > > This email sent to ssen(a)apple.com > > -- -mmw _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com

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Re: dyld 2 questions
by Shantonu Sen 08 Mar '08

08 Mar '08

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com System-wide? No. Not without recompiling your kernel. Shantonu Sent from my MacBook On Mar 8, 2008, at 11:08 AM, mm w wrote: So, to make simple, imagine a wonderful OS running on 32 extend 64 arch, all the sources are fat i386/ x86_64 is it to possible to influence the prefered mode _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/ssen%40apple.com _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… This email sent to ssen(a)apple.com This email sent to site_archiver(a)lists.apple.com

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Re: dyld 2 questions
by mm w 08 Mar '08

08 Mar '08

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from:to:subject:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; bh=eFQm3Y0o/fTw08JscaZYfSomm+qOaX6qoa6N24dazng=; b=Yf94NBm3ePxDg5vJlMbjYc6v+U+3aPhRuT1fm+A8sY+Vi9TriXFRDVrbcc75/bni7ClawVuJPDmjZ9D4eyKjoKjA2a0eVo4MBxX+EL2WIyc17y30ZVkgVnd4iyvea8f51FFEWlmQ81kSQLuytCcT49QBHROx/wLno1rWUrwTGew= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=j88xCvYMOwZsLnG0+lPvU+luXQ7OF97AaIYzI3O8HExe3694BZTKMySdwmj7DjiCU+hzf+r1zXh81a3QyswYXVNcilwYOxzMUeZ29nZ/z6SDjnIFItCcBgn8WUUodhQ1ZWPan6ECjwABHH62+OUPUOxK/xdldZSj7N8vSavJXgQ= So, to make simple, imagine a wonderful OS running on 32 extend 64 arch, all the sources are fat i386/ x86_64 is it to possible to influence the prefered mode _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com

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Re: Re: dyld 2 questions
by David Elliott 08 Mar '08

08 Mar '08

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com On Mar 8, 2008, at 12:34 PM, mm w wrote: + i discovered nothing it was just a simple example to illustrate an empiric way To find out what the preprocessor defines, try this: echo | gcc -arch x86_64 -dD -E - | less I do not know if you tried to use humour, but very bad I thought it was funny. -Dave Thank you #include <stdio.h> /* main.c */ int main(void) { #if ARCH_X86_64 puts("hello world 64!"); #else puts("hello world!"); #endif return 0; } /* EOF */ $ ./main-i386 hello world! $ ./main-x86_64 hello world 64! $ ./main hello world 64! ps or activity monitor or, as you have discovered, printf. 2 - is it possible to force one arch to be loaded rather than the default one? Check the checkbox in finder, if it's a GUI application, or: man arch -- Terry -- -mmw _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/dfe%40tgwbd.org _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… + the question was not related to an app Yes, which is why Terry told you to man arch. RTFM and you'll clearly get the answer about how you can force the OS to run a particular architecture. I think Terry read your example wrong. I know I did the first time through. You do not need to define ARCH_X86_64 yourself. It is already the case that __LP64__ will be defined for 64-bit (PPC or Intel) and not for 32-bit (PPC or Intel). It is also the case that __i386__ will be defined for i386 and __x86_64__ for x86-64 and so on and so forth. There's other stuff like __BIG_ENDIAN__ or __LITTLE_ENDIAN__. In general you should use macros like __BIG_ENDIAN__/__LITTLE_ENDIAN__ and __LP64__/!__LP64__ in preference to architecture-specific macros unless you are really writing architecture-specific code (e.g. inline assembler). So when he said you can use printf what he meant was that you can use preprocessor definitions to determine this because naturally your program is compiled once for each architecture and lipo'd together. Therefore the built-in preprocessor definitions are necessarily different. Even if you use gcc ... -arch i386 -arch x86_64 ... this will still be the case. That tells gcc to run the preprocessor only (-E) on the file "-" (which is short for stdin) for the given architecture and to dump the preprocessor definitions that are defined. Since the source file is one empty line (provided by echo ) you will only see what is built- in to the compiler plus what is defined on the command-line. On Fri, Mar 7, 2008 at 10:24 PM, Terry Lambert <tlambert(a)apple.com> wrote: On Mar 7, 2008, at 5:06 PM, mm w wrote: /* cc -ansi -Wall -O3 -arch i386 -DARCH_X86_64=0 main.c -o main-i386 cc -ansi -Wall -O2 -arch x86_64 -DARCH_X86_64=1 main.c -o main- x86_64 lipo -create -arch i386 main-i386 -arch x86_64 main-x86_64 -o main */ 1 - is there a way to know which arch/img has been loaded? This email sent to dfe(a)tgwbd.org This email sent to site_archiver(a)lists.apple.com

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Re: dyld 2 questions
by mm w 08 Mar '08

08 Mar '08

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from:to:subject:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; bh=7MsXJNzzwVRq5UIcprqI20GTYUTqmC98vW9QepHLrZw=; b=BCn6QEyB83U6sb0dHlgaWF3nbY3KUgk0iLVZN4jrhOLrbzOUa+NKIN/2utlCQegOoKlGHDyC/Sbo4H4g+Oqb7zjr29F7W9lvDOsylGHL2k002FaclYxR3jm01xt2FvSb7HkTCpALbVTME7JdgY5GZgLXt8a9Hu+Ukk7TV/yYY+g= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=vTVWBsVQ0Ul/QcfzFgk3ECTZVZ50GfmuJaZBq+BLV/pooKsHoHWFRuAZox2zLphEN4MLrCp3aASSwn2WTUicXZj40u8Yz9d+60aVQ4sQnwDVD4tHNJmJIhIv//rbWw8E3aWcfXQuXmhFRuC5y508iCPJ8KNPNeeUhZV2a51sllk= sorry guys it's not my question On Sat, Mar 8, 2008 at 10:51 AM, Andreas Fink <afink(a)list.fink.org> wrote: > > On 08.03.2008, at 18:22, mm w wrote: > > > hi Terry it's really not that I'm asked, > > > > I reiterate my question, is it possible to get which arch of a fat > > binary has been loaded? > > is it possible (in the case of a fat binary) to force one arch to be > > > loaded rather than the default one? > > - use lipo to remove all arch's you dont want to use. > - use get-info in finder to run in rosetta (forcing it to run as ppc > (is ppc64 supported in rosetta? I don't think so) > > As it was already said, the Activity Monitor application tells you > which architecture an application was loaded. > And of course ifdef's in the source will tell you as well as the > source (after being run through preprocessor) will be different for > every arch. > > > > > > > > > > > > > On Fri, Mar 7, 2008 at 10:24 PM, Terry Lambert <tlambert(a)apple.com> > > wrote: > >> On Mar 7, 2008, at 5:06 PM, mm w wrote: > >>> #include <stdio.h> > >>> > >>> /* > >>> cc -ansi -Wall -O3 -arch i386 -DARCH_X86_64=0 main.c -o main-i386 > >>> cc -ansi -Wall -O2 -arch x86_64 -DARCH_X86_64=1 main.c -o main- > >>> x86_64 > >>> lipo -create -arch i386 main-i386 -arch x86_64 main-x86_64 -o main > >>> */ > >>> > >>> /* main.c */ > >>> > >>> int main(void) { > >>> #if ARCH_X86_64 > >>> puts("hello world 64!"); > >>> #else > >>> puts("hello world!"); > >>> #endif > >>> return 0; > >>> } > >>> /* EOF */ > >>> > >>> $ ./main-i386 > >>> hello world! > >>> $ ./main-x86_64 > >>> hello world 64! > >>> $ ./main > >>> hello world 64! > >>> > >>> 1 - is there a way to know which arch/img has been loaded? > >> > >> ps or activity monitor or, as you have discovered, printf. > >> > >> > >>> 2 - is it possible to force one arch to be loaded rather than the > >>> default one? > >> > >> Check the checkbox in finder, if it's a GUI application, or: > >> > >> man arch > >> > >> -- Terry > >> > > > > > > > > -- > > -mmw > > _______________________________________________ > > Do not post admin requests to the list. They will be ignored. > > Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) > > Help/Unsubscribe/Update your Subscription: > > http://lists.apple.com/mailman/options/darwin-kernel/afink%40list.fink.org > > > > This email sent to afink(a)list.fink.org > > -- -mmw _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com

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Re: dyld 2 questions
by Andreas Fink 08 Mar '08

08 Mar '08

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com On 08.03.2008, at 18:22, mm w wrote: hi Terry it's really not that I'm asked, I reiterate my question, is it possible to get which arch of a fat binary has been loaded? is it possible (in the case of a fat binary) to force one arch to be loaded rather than the default one? #include <stdio.h> /* main.c */ int main(void) { #if ARCH_X86_64 puts("hello world 64!"); #else puts("hello world!"); #endif return 0; } /* EOF */ $ ./main-i386 hello world! $ ./main-x86_64 hello world 64! $ ./main hello world 64! ps or activity monitor or, as you have discovered, printf. 2 - is it possible to force one arch to be loaded rather than the default one? Check the checkbox in finder, if it's a GUI application, or: man arch -- Terry -- -mmw _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/afink%40list.fink.org _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… - use lipo to remove all arch's you dont want to use. - use get-info in finder to run in rosetta (forcing it to run as ppc (is ppc64 supported in rosetta? I don't think so) As it was already said, the Activity Monitor application tells you which architecture an application was loaded. And of course ifdef's in the source will tell you as well as the source (after being run through preprocessor) will be different for every arch. On Fri, Mar 7, 2008 at 10:24 PM, Terry Lambert <tlambert(a)apple.com> wrote: On Mar 7, 2008, at 5:06 PM, mm w wrote: /* cc -ansi -Wall -O3 -arch i386 -DARCH_X86_64=0 main.c -o main-i386 cc -ansi -Wall -O2 -arch x86_64 -DARCH_X86_64=1 main.c -o main- x86_64 lipo -create -arch i386 main-i386 -arch x86_64 main-x86_64 -o main */ 1 - is there a way to know which arch/img has been loaded? This email sent to afink(a)list.fink.org This email sent to site_archiver(a)lists.apple.com

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