[darwinbuild] Size of mach_kernel when using darwinbuild?

[Kevin Van Vechten]

The Symbols version is at least 6 times bigger than the Roots version  
(7,790,644 vs. 51,211,964).
The version in Roots is almost twice the size of the one installed on  
your system because darwinbuild builds universal binaries, which have  
both ppc and x86 code, whereas your system is likely ppc-only.

- Kevin

On Nov 4, 2005, at 1:57 PM, James Reynolds wrote:

> I used darwinbuild to build xnu-792.6.22 and it seems to me the  
> file sizes are a bit high:
>
>
> ls -l Roots/xnu/xnu-792.6.22.root~1/mach_kernel
> -rw-r--r--   1 root  wheel  7790644 Nov  4 15:03 Roots/xnu/ 
> xnu-792.6.22.root~1/mach_kernel
>
> ls -l Symbols/xnu/xnu-792.6.22.sym~1/mach_kernel
> -rw-r--r--   1 root  wheel  51211964 Nov  4 15:03 Symbols/xnu/ 
> xnu-792.6.22.sym~1/mach_kernel
>
> ls -l /mach_kernel
> -rw-r--r--   1 root  wheel  4330232 Oct  3 21:04 /mach_kernel
>
> How is it that the version in Roots is so much larger than the  
> version with symbols?
>
> After mounting a case system file system with permissions on, I  
> just ran these 3 commands (fluff removed):
>
> /usr/local/bin/darwinbuild -init 8F46
> /usr/local/bin/darwinbuild -fetch xnu
> /usr/local/bin/darwinbuild xnu
>
> Any ideas?