32 bit application on IA-64 Linux

32 bit application on IA-64 Linux

[Srikanta R]

Hi,

I need to compile a 32 bit application on a IA-64
Linux system, that will run on IA-64 system. I didn't
find any such option for the compiler on IA-64 Linux
system. Can someone suggest how can I get this done ?

Thanks,
Srikanta.

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Re: 32 bit application on IA-64 Linux

[Grant Grundler]

On Sun, Apr 11, 2004 at 09:21:50PM -0700, Srikanta R wrote:
> Hi,
> 
> I need to compile a 32 bit application on a IA-64
> Linux system, that will run on IA-64 system. I didn't
> find any such option for the compiler on IA-64 Linux
> system. Can someone suggest how can I get this done ?

AFAIK, only HPUX supports a 32-bit ia64 environment with
the HPUX compiler/toolchain.

Either build it on an ia32 system and install the ia32 compat libs
on the ia64 machines (poor performance) or try to build the application
as a native 64-bit application (better performance).

Sorry, but the obvious question is If you really only need 32-bit,
why not run it on a fast ia32 machine?

I know a few other reasons one might port to ia64 besides 64-bit
but would like to hear your reasons.

grant

Re: 32 bit application on IA-64 Linux

[Arun Sharma]

On 4/11/2004 9:21 PM, Srikanta R wrote:

> Hi,
> 
> I need to compile a 32 bit application on a IA-64
> Linux system, that will run on IA-64 system. I didn't
> find any such option for the compiler on IA-64 Linux
> system. Can someone suggest how can I get this done ?

You can install a 32 bit toolchain (compiler + binutils) into /emul/ia32-linux and do this.

	-Arun

Re: 32 bit application on IA-64 Linux

[Srikanta R]

Hi Arun,

Thanks for the information. Can you please tell me
where I can get it from ?

Thanks,
Srikanta

--- Arun Sharma <arun.sharma@intel.com> wrote:
> On 4/11/2004 9:21 PM, Srikanta R wrote:
> 
> > Hi,
> > 
> > I need to compile a 32 bit application on a IA-64
> > Linux system, that will run on IA-64 system. I
> didn't
> > find any such option for the compiler on IA-64
> Linux
> > system. Can someone suggest how can I get this
> done ?
> 
> You can install a 32 bit toolchain (compiler +
> binutils) into /emul/ia32-linux and do this.
> 
> 	-Arun
> 



	
		
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Re: 32 bit application on IA-64 Linux

[Peter Chubb]

>>>>> "Srikanta" = Srikanta R <Srikanta> writes:

Srikanta> Hi Arun, Thanks for the information. Can you please tell me
Srikanta> where I can get it from ?

If you're running debian, there's a prebuilt cross compiler available
from the Gelato Debian repository

See http://www.gelato.unsw.edu.au/IA64wiki/GelatoDebianRepository

or just add this to /etc/apt/sources.list :

   deb http://gelato.unsw.edu.au/debian unstable/$(ARCH)/
   deb http://gelato.unsw.edu.au/debian unstable/all/
   deb-src http://gelato.unsw.edu.au/debian/ unstable/source/

and install gcc-i386-linux and binutils-i386-linux

You'll also need to install the ia32-libs package, and
toolchain-source, then do 
  tpkg-install-libc i386-linux
to get the development libraries and headers.

Disclaimer:  I haven't actually done all this.

Another approach would be to install an IA32 native toolchain under
/emul/ia32-linux/ 

Both dpkg and rpm allow you to specify a root directory; just specify
/emul/ia32-linux 




--
Dr Peter Chubb  http://www.gelato.unsw.edu.au  peterc AT gelato.unsw.edu.au
The technical we do immediately,  the political takes *forever*

Re: 32 bit application on IA-64 Linux

[Arun Sharma]

On 4/14/2004 8:09 PM, Srikanta R wrote:

> Hi Arun,
> 
> Thanks for the information. Can you please tell me
> where I can get it from ?
> 

From your favorite IA-32 Linux distribution.

	-Arun

Re: 32 bit application on IA-64 Linux

[Arun Sharma]

On 4/14/2004 9:01 PM, Peter Chubb wrote:

> Both dpkg and rpm allow you to specify a root directory; just specify
> /emul/ia32-linux 

# rpm -qi gcc
Name        : gcc                          Relocations: (not relocatable)
[...]

gcc is usually not relocatable. So one might have to use a "hack" such as rpm2cpio. I used chroot /emul/ia32-linux. But that requires a minimal package database is already setup under /emul/ia32-linux.

	-Arun