Re: [coLinux-devel] good news....

[Henry N. <hen...@ar...>]

  Currently the gcc is forced to build a 32 bit Linux kernel with the 
option "ARCH=i386" in the call "make ... vmlinux". We need this to build 
coLinux for 32 bit on 64 bit platforms.

Maybe a "ARCH=x86_64" can force the other way for you?

The option '-m64' exist also in source of gcc 3.4.5, see that changelog:
2004-02-18  Jakub Jelinek <ja...@re...>

         * config/i386/i386.c (override_options): Don't imply 3DNow! for 
-m64
         by default.

... and more ...

The default GCC inside a 32 bit system has mostly not enabled the 64 bit 
option?

-- 
Henry

On 25.06.2010 10:22, Paolo Minazzi wrote:
> I try to answer myself.
> gcc 4.0 can produce also 64bit code (I have read -m64 option or arch=x86_64)
> It seems gcc 3.x cannot do it.
>
> On my linux native I have a gcc 3.x, so colinux kernel_64bit  is not
> compiled in 64bit mode.
>
> I will check it.
> Paolo
>
>
>
>
> On Fri, Jun 25, 2010 at 8:53 AM, Paolo Minazzi<pao...@gm...>  wrote:
>> Hi Henry,
>> I have tried to use your devel-64bit packages on my 32bit linux system.
>> All compiling process is OK.
>> To understand 64bit internal (IDT and memory management) I'd like to
>> test a linux native 64bit on a qemu-64bit.
>> But I need gcc 64bit.
>>
>> My gcc produce 32bit code. Is there some option ?
>> I have see that your 64bit package compile linux kernel. But it uses
>> gcc. And my gcc is 32bit.
>>
>> Thanks,
>> Paolo
>