Re: dyld 2 questions
Re: dyld 2 questions
- Subject: Re: dyld 2 questions
- From: Terry Lambert <email@hidden>
- Date: Fri, 7 Mar 2008 22:24:38 -0800
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
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