Re: Fw: How to Port 32bit source code in compatible to 64bit OS

[Syam Prasad Nagabairu <snagabairu at indusrad dot com>]

Tim Prince,
             Thanks for ur response. I am using 32 bit OS ( Suse Linux
             /i386) but i need to compile for 64bit. coding is doen well
             with standards. the main need is porting the compiler itself.
             please help!


Thanks & Regards,
Syam Prasad N



-----Tim Prince <timothyprince@sbcglobal.net> wrote: -----


To: Syam Prasad Nagabairu <snagabairu@indusrad.com>
From: Tim Prince <timothyprince@sbcglobal.net>
Date: 01/02/2007 06:19PM
cc: gcc-help@gcc.gnu.org
Subject: Re: Fw: How to Port 32bit source code in compatible to 64bit OS

Syam Prasad Nagabairu wrote:
> Hi All,
> Here I already ported the source code to gcc from diab compiler by using
> cygwin environment on Microsoft Windows XP [Version 5.1.2600]. Now the
> requirement for me is to port this code on Linux in particular SUSE
> linux.actually my need is to simulate the code on model. we need to port
it
> in compatible to 64bit. is it possible to port a 32 bit source code on
> GNU/linux(i686 machine processor)? I am beginner in linux!please help me.
> thanks in advance
>

cygwin doesn't support 64-bit Windows development.  I certainly hope it
may do so at some time not too far distant.
If you write standard C code, rather than taking steps to make it a
non-portable "32-bit" code, you should be able to make it run both on
linux x86-64 (64-bit) and on i686-pc-cygwin (32-bit).  If you are
talking about porting the compiler itself, which I understand is a cross
 compiler, there may be no advantage in turning it into a 64-bit
application, since the x86-64 OS supports 32-bit mode perfectly well.