FW: Need openssh for embedded linux on 440GP

FW: Need openssh for embedded linux on 440GP

[brian.auld]

One more time...

Is there any particular reason why openssh is not included in the ELDK
target package?

As an update to what's written below, I did try cross-compiling and that was
even less successful than compiling on my embedded target.

The error I receive is: "Disconnecting: Corrupted MAC on input"

Thanks,

-- Brian

-----Original Message-----
From: brian.auld@adic.com [mailto:brian.auld@adic.com]
Sent: Thursday, March 06, 2003 11:03 AM
To: linuxppc-embedded@lists.linuxppc.org
Subject: Need openssh for embedded linux on 440GP


This is more of an ELDK question that a general embedded linux question.

I am trying to get openssh installed and running on my embedded 440
platform. 'openssh' is not part of the target packages provided with the
ELDK, so I figure there's 2 ways to do it:

(a) cross-compile on my host
(b) compile it on my target system

I haven't tried (a) yet, as openssh does not seem to be very cross-compile
friendly and I'm still getting comfortable with the whole 'cross-compiling'
from source using ELDK.

I went ahead and proceeded with (b). I retrieved the latest source from
www.openssh.com, unpacked and built it on my target system (filesytem nfs
mounted). It took a while, but everything built ok. I thought I was home
free until I tried to either:

  (i)  start the sshd daemon
       The daemon starts OK. However, when I ssh to the
       Target, it barfs on a 'CRC' error.
  (ii) ssh to another machine from the target
       When I try to connect, I get an error message related
       Errors at the MAC addr level.

Can't provide more detail at this point on the specific errors as I'm
rebuilding ssh as I write this (on the target) and can't get the info.

Is the direction I'm going in the logical direction? I've worked on embedded
systems for years, but this is the first with embedded linux, and the first
time I've actually built something on my target!! It feels unusual, but I
don't see why it shouldn't work, and seems like a better choice than
cross-compiling.

Feed me back please.

Also, is there any particular reason ssh is not included in the ELDK target
packages?

Thanks

-- Brian


** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/

Re: FW: Need openssh for embedded linux on 440GP

[Wolfgang Denk]

In message <995FF289C9D69747A09E42992644595405B236B3@penguin.adic.com> you wrote:
>
> Is there any particular reason why openssh is not included in the ELDK
> target package?

None of our customers asked for it yet, and nobody  else  contributed
it either.

> As an update to what's written below, I did try cross-compiling and that was
> even less successful than compiling on my embedded target.

I'm not surprised.

> The error I receive is: "Disconnecting: Corrupted MAC on input"

I guess you mis-configured the tools so you now  run  into  endianess
problems?

> I am trying to get openssh installed and running on my embedded 440
> platform. 'openssh' is not part of the target packages provided with the
> ELDK, so I figure there's 2 ways to do it:
>
> (a) cross-compile on my host
> (b) compile it on my target system
>
> I haven't tried (a) yet, as openssh does not seem to be very cross-compile
> friendly and I'm still getting comfortable with the whole 'cross-compiling'
> from source using ELDK.

In general,  cross  compiling  is  as  trivial  as  adding  a  "CC  =
$(CROSS_COMPILE)gcc"  line  to  the Makefile. At least for any source
that was  portably  written  and  does  not  need  any  autoconfig  /
configure stuff to be built.

> I went ahead and proceeded with (b). I retrieved the latest source from
> www.openssh.com, unpacked and built it on my target system (filesytem nfs
> mounted). It took a while, but everything built ok. I thought I was home
> free until I tried to either:
>
>   (i)  start the sshd daemon
>        The daemon starts OK. However, when I ssh to the
>        Target, it barfs on a 'CRC' error.

Did you turn on debugging?

>   (ii) ssh to another machine from the target
>        When I try to connect, I get an error message related
>        Errors at the MAC addr level.

Did you turn on debugging?

> Can't provide more detail at this point on the specific errors as I'm
> rebuilding ssh as I write this (on the target) and can't get the info.
>
> Is the direction I'm going in the logical direction? I've worked on embedded
> systems for years, but this is the first with embedded linux, and the first
> time I've actually built something on my target!! It feels unusual, but I
> don't see why it shouldn't work, and seems like a better choice than
> cross-compiling.

It should work.

Best regards,

Wolfgang Denk

--
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd@denx.de
"We don't care.  We don't have to.  We're the Phone Company."

** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/

RE: FW: Need openssh for embedded linux on 440GP

[brian.auld]

Thanks for the reply Wolfgang.

(1) I did set CROSS_COMPILE flags in the openssh Makefile, for CC and
others, and it barfed when compiling on the host. There doesn't seem to be a
lot of info out there on openssh cross-compiling ...

(2) Based on your response below, compiling on the target using the ppc_4xx
target filesytem tools provided (gcc etc...), the expectation is that
openssh should run, correct? My bandwidth right now is tied up on other
stuff right now, so I can't get into openssh debugging, but I hope to have
that chance soon.

I looked through the openssh code and they appeared to make judicious use of
htonl/s and ntohl/s which should alleviate an endianness issues ... correct
me if I'm wrong. When I get I chance, I'll double check the hton and ntoh
macros to make sure that's the case.

Thanks again,

-- Brian

-----Original Message-----
From: Wolfgang Denk [mailto:wd@denx.de]
Sent: Wednesday, March 12, 2003 9:11 AM
To: brian.auld@adic.com
Cc: linuxppc-embedded@lists.linuxppc.org
Subject: Re: FW: Need openssh for embedded linux on 440GP

In message <995FF289C9D69747A09E42992644595405B236B3@penguin.adic.com> you
wrote:
>
> Is there any particular reason why openssh is not included in the ELDK
> target package?

None of our customers asked for it yet, and nobody  else  contributed
it either.

> As an update to what's written below, I did try cross-compiling and that
was
> even less successful than compiling on my embedded target.

I'm not surprised.

> The error I receive is: "Disconnecting: Corrupted MAC on input"

I guess you mis-configured the tools so you now  run  into  endianess
problems?

> I am trying to get openssh installed and running on my embedded 440
> platform. 'openssh' is not part of the target packages provided with the
> ELDK, so I figure there's 2 ways to do it:
>
> (a) cross-compile on my host
> (b) compile it on my target system
>
> I haven't tried (a) yet, as openssh does not seem to be very cross-compile
> friendly and I'm still getting comfortable with the whole
'cross-compiling'
> from source using ELDK.

In general,  cross  compiling  is  as  trivial  as  adding  a  "CC  =
$(CROSS_COMPILE)gcc"  line  to  the Makefile. At least for any source
that was  portably  written  and  does  not  need  any  autoconfig  /
configure stuff to be built.

> I went ahead and proceeded with (b). I retrieved the latest source from
> www.openssh.com, unpacked and built it on my target system (filesytem nfs
> mounted). It took a while, but everything built ok. I thought I was home
> free until I tried to either:
>
>   (i)  start the sshd daemon
>        The daemon starts OK. However, when I ssh to the
>        Target, it barfs on a 'CRC' error.

Did you turn on debugging?

>   (ii) ssh to another machine from the target
>        When I try to connect, I get an error message related
>        Errors at the MAC addr level.

Did you turn on debugging?

> Can't provide more detail at this point on the specific errors as I'm
> rebuilding ssh as I write this (on the target) and can't get the info.
>
> Is the direction I'm going in the logical direction? I've worked on
embedded
> systems for years, but this is the first with embedded linux, and the
first
> time I've actually built something on my target!! It feels unusual, but I
> don't see why it shouldn't work, and seems like a better choice than
> cross-compiling.

It should work.

Best regards,

Wolfgang Denk

--
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd@denx.de
"We don't care.  We don't have to.  We're the Phone Company."

** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/

Re: FW: Need openssh for embedded linux on 440GP

[Roland Dreier]

    brian> As an update to what's written below, I did try
    brian> cross-compiling and that was even less successful than
    brian> compiling on my embedded target.

I cross-compiled OpenSSH 3.5 for the 440GP.  I did have to go through
the "configure" file and hard-code all the tests that try to run
programs.

 - Roland

** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/