Neale,

>If you are building from scratch then you can build the nuc. libs etc. on a 32-bit 
>s390 system with a cross-compiler and then boot the resulting kernel in a virtual 
>machine.

OK, so I would on my existing s390 system
) Copy my existing system to another disk
) Cross compile binutils, gcc, glibc and kernel (description on IBM Developerworks)
) Install them on the copied disk (libraries to lib64, leave existing s390 libraries 
in /lib, /usr/lib)
) IPL ?
) Existing applications should run with old s390 libraries on kernel built from 
developerworks ?
) New compiled applications will use new s390x libraries from now on ?

) What do you mean by "boot the resulting kernel in a virtual machine" ?

Andreas

-----Urspr�ngliche Nachricht-----
Von: Linux on 390 Port [mailto:[EMAIL PROTECTED] Im Auftrag von Ferguson, Neale
Gesendet: Freitag, 08. Oktober 2004 17:02
An: [EMAIL PROTECTED]
Betreff: Re: On my way to 64 bit ?


Are you building a system from scratch or moving apps from a 32-bit system to a 64-bit 
system? If the latter and you are staying on, for example, SLES8 then your apps should 
work. There is a 32-bit compatability (or 64-bit toleration) layer of code in the 
kernel as well as the 32-bit libs living in /usr/lib and /lib. /usr/lib64 and /lib64 
contain the 64-bit stuff. 

If you are building from scratch then you can build the nuc. libs etc. on a 32-bit 
s390 system with a cross-compiler and then boot the resulting kernel in a virtual 
machine.

Neale

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