Problem in linking with montavista toolchain for omap2420

Problem in linking with montavista toolchain for omap2420

[Indraneel]

Hi,
I'm trying to cross-compile a program using the montavista tool chain
for arm_v5t_le architecture for the omap2420(h4 board). I get the
following error when linking a simple c program:

$ arm_v5t_le-gcc -DPOSIX -DMD=2 rz.c
/opt/montavista/devkit/arm/v5t_le/lib/gcc-lib/armv5tl-hardhat-linux/3.3.1/../../../../armv5tl-hardhat-linux/bin/ld: cannot find libc.so.6
collect2: ld returned 1 exit status


Surprisingly i couldn't find any file or link by the name libc.so.6 in
the toolchain, although there was
/opt/montavista/devkit/arm/v5t_le/target/usr/lib/libc.so

Other info
gcc
version 3.3.1 (MontaVista 3.3.1-7.0.15.0500230 2005-02-20)
--with-sysroot=/opt/montavista/devkit/arm/v5t_le/target

GNU ld
version 2.14 20030612 (MontaVista 2.14-11.0.7.0500230 2005-02-20)

PATH=/opt/montavista/devkit/arm/v5t_le/bin:$PATH


I have searched for the error but couldn't find anything definitive.

Can anyone provide any clues as to what is wrong and how can i solve
this linking issue?

Any pointers will be appreciated.

Regards,
Indraneel

RE: Problem in linking with montavista toolchain for omap2420

[Madhava Gauranga]

Hey indranil,

I reckon u have copied the toolchain already installed somewhere,
instead of installing them. try installing(perhaps from the cd(s)
provided) the toolchain. The problem should be fixed then.

Respect,
Madhava Gauranga
 
 
Ittiam Systems | www.ittiam.com
A Red Herring Asia 100 Company, 2005
Forward Concepts' Worlds Most Preferred DSP IP Supplier, 2004, 2005

-----Original Message-----
From: linux-omap-open-source-bounces@linux.omap.com
[mailto:linux-omap-open-source-bounces@linux.omap.com] On Behalf Of
Indraneel
Sent: Sunday, January 28, 2007 5:23 PM
To: Linux-omap-open-source@linux.omap.com
Subject: Problem in linking with montavista toolchain for omap2420

Hi,
I'm trying to cross-compile a program using the montavista tool chain
for arm_v5t_le architecture for the omap2420(h4 board). I get the
following error when linking a simple c program:

$ arm_v5t_le-gcc -DPOSIX -DMD=2 rz.c
/opt/montavista/devkit/arm/v5t_le/lib/gcc-lib/armv5tl-hardhat-linux/3.3.
1/../../../../armv5tl-hardhat-linux/bin/ld: cannot find libc.so.6
collect2: ld returned 1 exit status


Surprisingly i couldn't find any file or link by the name libc.so.6 in
the toolchain, although there was
/opt/montavista/devkit/arm/v5t_le/target/usr/lib/libc.so

Other info
gcc
version 3.3.1 (MontaVista 3.3.1-7.0.15.0500230 2005-02-20)
--with-sysroot=/opt/montavista/devkit/arm/v5t_le/target

GNU ld
version 2.14 20030612 (MontaVista 2.14-11.0.7.0500230 2005-02-20)

PATH=/opt/montavista/devkit/arm/v5t_le/bin:$PATH


I have searched for the error but couldn't find anything definitive.

Can anyone provide any clues as to what is wrong and how can i solve
this linking issue?

Any pointers will be appreciated.

Regards,
Indraneel




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RE: Problem in linking with montavista toolchain for omap2420

[Indraneel]

Hello Madhava,

On Tue, 2007-01-30 at 11:46 +0530, Madhava Gauranga wrote:
> Hey indranil,
> 
> I reckon u have copied the toolchain already installed somewhere,
> instead of installing them. try installing(perhaps from the cd(s)
> provided) the toolchain.


It shouldn't be a case of missing libs as i am able to build and run the
kernel from the same. I played around with the linker options

LDFLAGS= -nostdlib -L/opt/montavista/devkit/arm/v5t_le/target/usr/lib
-L/opt/montavista/devkit/arm/v5t_le/lib/gcc-lib/armv5tl-hardhat-linux/3.3.1 -L/opt/montavista/devkit/arm/v5t_le/armv5tl-hardhat-linux/lib

With this i am past the previous error and the new error is

/opt/montavista/devkit/arm/v5t_le/lib/gcc-lib/armv5tl-hardhat-linux/3.3.1/../../../../armv5tl-hardhat-linux/bin/ld: warning: cannot find entry symbol _start; defaulting to 00008074
/tmp/cc0VA6xr.o(.text+0x8): In function `main':
: undefined reference to `puts'
collect2: ld returned 1 exit status

I guess it's something to do with path but i'm not sure what exactly.

The code i'm trying to build is

#include<stdio.h>
int main (void)
{
printf("Hello World - arm linux\n");
return 0;
}


Regards,
Indraneel

>  The problem should be fixed then.
> 
> Respect,
> Madhava Gauranga
>  
> 
> Ittiam Systems | www.ittiam.com
> A Red Herring Asia 100 Company, 2005
> Forward Concepts' Worlds Most Preferred DSP IP Supplier, 2004, 2005
> 
> -----Original Message-----
> From: linux-omap-open-source-bounces@linux.omap.com
> [mailto:linux-omap-open-source-bounces@linux.omap.com] On Behalf Of
> Indraneel
> Sent: Sunday, January 28, 2007 5:23 PM
> To: Linux-omap-open-source@linux.omap.com
> Subject: Problem in linking with montavista toolchain for omap2420
> 
> Hi,
> I'm trying to cross-compile a program using the montavista tool chain
> for arm_v5t_le architecture for the omap2420(h4 board). I get the
> following error when linking a simple c program:
> 
> $ arm_v5t_le-gcc -DPOSIX -DMD=2 rz.c
> /opt/montavista/devkit/arm/v5t_le/lib/gcc-lib/armv5tl-hardhat-linux/3.3.
> 1/../../../../armv5tl-hardhat-linux/bin/ld: cannot find libc.so.6
> collect2: ld returned 1 exit status
> 
> 
> Surprisingly i couldn't find any file or link by the name libc.so.6 in
> the toolchain, although there was
> /opt/montavista/devkit/arm/v5t_le/target/usr/lib/libc.so
> 
> Other info
> gcc
> version 3.3.1 (MontaVista 3.3.1-7.0.15.0500230 2005-02-20)
> --with-sysroot=/opt/montavista/devkit/arm/v5t_le/target
> 
> GNU ld
> version 2.14 20030612 (MontaVista 2.14-11.0.7.0500230 2005-02-20)
> 
> PATH=/opt/montavista/devkit/arm/v5t_le/bin:$PATH
> 
> 
> I have searched for the error but couldn't find anything definitive.
> 
> Can anyone provide any clues as to what is wrong and how can i solve
> this linking issue?
> 
> Any pointers will be appreciated.
> 
> Regards,
> Indraneel
> 
> 
> 
> 
> _______________________________________________
> Linux-omap-open-source mailing list
> Linux-omap-open-source@linux.omap.com
> http://linux.omap.com/mailman/listinfo/linux-omap-open-source
> 
> **********************************************************************
> This email and any files transmitted with it are confidential and
> intended solely for the use of the individual or entity to whom they
> are addressed. If you have received this email in error please notify
> helpdesk@ittiam.com.
> **********************************************************************
> 
> 
> 

Re: Problem in linking with montavista toolchain for omap2420

[andrzej zaborowski]

Hi,

On 30/01/07, Indraneel <indraneel.m@samsung.com> wrote:
> LDFLAGS= -nostdlib -L/opt/montavista/devkit/arm/v5t_le/target/usr/lib
> -L/opt/montavista/devkit/arm/v5t_le/lib/gcc-lib/armv5tl-hardhat-linux/3.3.1 -L/opt/montavista/devkit/arm/v5t_le/armv5tl-hardhat-linux/lib
>
> With this i am past the previous error and the new error is
>
> /opt/montavista/devkit/arm/v5t_le/lib/gcc-lib/armv5tl-hardhat-linux/3.3.1/../../../../armv5tl-hardhat-linux/bin/ld: warning: cannot find entry symbol _start; defaulting to 00008074
> /tmp/cc0VA6xr.o(.text+0x8): In function `main':
> : undefined reference to `puts'
> collect2: ld returned 1 exit status
>
> I guess it's something to do with path but i'm not sure what exactly.

These function (puts, _start) are part of the C library, which you
disabled by passing -nostdlib so it's understandable that the linker
is not finding them.

Personally I'd just try a different toolchain. Tools like "scratchbox"
or "crosstool" or Gentoo's "crossdev"  make it particularly easy to
compile a working toolchain. You can also build it using only bare
gcc, binutils and glibc/uclibc sources.

If you have libc.so but not libc.so.6 try symlinking libc.so.6 ->
libc.so (not guarranted to work but may help, maybe someone forgot to
pack the link).

Regards,
Andrew

Re: Problem in linking with montavista toolchain for omap2420

[Indraneel]

Hello Andrew,

On Tue, 2007-01-30 at 15:55 +0100, andrzej zaborowski wrote:
> Hi,
> 
> On 30/01/07, Indraneel <indraneel.m@samsung.com> wrote:
> > LDFLAGS= -nostdlib -L/opt/montavista/devkit/arm/v5t_le/target/usr/lib
> > -L/opt/montavista/devkit/arm/v5t_le/lib/gcc-lib/armv5tl-hardhat-linux/3.3.1 -L/opt/montavista/devkit/arm/v5t_le/armv5tl-hardhat-linux/lib
> >
> > With this i am past the previous error and the new error is
> >
> > /opt/montavista/devkit/arm/v5t_le/lib/gcc-lib/armv5tl-hardhat-linux/3.3.1/../../../../armv5tl-hardhat-linux/bin/ld: warning: cannot find entry symbol _start; defaulting to 00008074
> > /tmp/cc0VA6xr.o(.text+0x8): In function `main':
> > : undefined reference to `puts'
> > collect2: ld returned 1 exit status
> >
> > I guess it's something to do with path but i'm not sure what exactly.
> 
> These function (puts, _start) are part of the C library, which you
> disabled by passing -nostdlib so it's understandable that the linker
> is not finding them.
> 
> Personally I'd just try a different toolchain. Tools like "scratchbox"
> or "crosstool" or Gentoo's "crossdev"  make it particularly easy to
> compile a working toolchain. You can also build it using only bare
> gcc, binutils and glibc/uclibc sources.

The tool chain should be okay as i'm "able to build and run the kernel"
using the same montavista v5t_le toolchain. But surprisingly i'm unable
to build a simple application binary using the same. I'm giving the
-nostdlib option so that it doesn't pick C libs from the host. The path
to the libs is provided in the -L option. Correct me if my understanding
is wrong.
It should be a matter of giving the correct compiler/linker options to
build the code but i haven't been able to figure that out till now.

If somebody is using the montavista v5t_le toolchain (for TI's H4
board), please let me know the options to compile and link a simple
HelloWorld program.

Other info
gcc
version 3.3.1 (MontaVista 3.3.1-7.0.15.0500230 2005-02-20)
--with-sysroot=/opt/montavista/devkit/arm/v5t_le/target

GNU ld
version 2.14 20030612 (MontaVista 2.14-11.0.7.0500230 2005-02-20)

PATH=/opt/montavista/devkit/arm/v5t_le/bin:$PATH (i keep the toolchain
here)




Regards,
Indraneel


> 
> If you have libc.so but not libc.so.6 try symlinking libc.so.6 ->
> libc.so (not guarranted to work but may help, maybe someone forgot to
> pack the link).
> 
> Regards,
> Andrew
> 
>