Re: what happens before main()?

I don't think that would help. The kernel hands off control to dyld (the dynamic linker), which is in charge of mapping all shared libraries, as well as running initializers (including C++ static initializers). dyld then jumps to crt1.o's entry point, which may do some further initialization before entering main().

Try looking at the dyld(1) man page. DYLD_PRINT_INITIALIZERS and DYLD_PRINT_STATISTICS might be enlightening

Shantonu

Sent from my MacBook

On Apr 27, 2010, at 3:42 AM, Ivan Ostres wrote:

> Hi!
> 
> To every C/C++ program, startup file is added - like /usr/lib/crt1.o which does initializations. Since it was not compiled with -g, you can't really step through it but you could find source for it (if available) and compile it yourself and add it to your program instead of standard crt*.o. In that case you could step through it.
> 
> Regards,
> Ivan
> 
> P.S. You can check gcc/ld documentation which exact startup file is linked to your program to be sure
> 
> 
> On Apr 27, 2010, at 11:59 AM, Aya Koshigaya wrote:
> 
>> Hi,
>> 
>> I have a big library written in C++, in this lib there are several static-things that get initialised at the start of the Programm, even before the main() function is called.
>> 
>> So far so good, but the problem is - the program takes some time to start, and when I did some time-trackings to see where the time goes, I found out it takes already up to 3 seconds until my main() function is called.
>> 
>> But, since there are about 300-400 Files it would take forever to find the "bad" statics.. so, is there any way in Xcode to step trough the initialisation process? Like as if I'd put a breakpoint in the main() function and step forward.. but in the main method it's already to late :(
>> 
>> Aya~_______________________________________________
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> 
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