RE: iptables 1.2.8 libc6 question

RE: iptables 1.2.8 libc6 question

[Daniel Chemko]

Cross compiling is not a trivial matter when cross compiling different
systems. Basically unless you are running vanilla x86 with compatible
versions of libc, you will run into hella troubles getting into it.  As
a solution, you will need either the libc from the destination
architecture on the build machine, and point the compiler to build the
program against the other libraries. I have never done this with
iptables, but that is how you would go about it.

-----Original Message-----
From: Emanoil Kotsev [mailto:emanuel@abc.at] 
Sent: Tuesday, July 15, 2003 1:41 PM
To: netfilter@lists.netfilter.org
Subject: iptables 1.2.8 libc6 question

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Hash: SHA1

Please help me to find information how to build iptables (1.2.8) for
kernel 
2.4.20 on my PC with libc-2.3.1 for another PC where libc-2.2.5 is
installed.

I have no problem to compile and install but iptables dies miserably
trying to 
load libc6 which is actually a link to libc-2.2.5 on the target machine.

What should I do?

P.S above this I found quite a lot of documentation telling me how I can

compile and install a linux kernel and iptables and aplications based on

libiptc but nothing to tell me how I can link iptables to different libc
and 
I don't want to make a mistake ...

Thanks

- -- 
//----------------------
||
|| Emanoil Kotsev       
||
|| tel. 0043 1 9253175
||
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Re: iptables 1.2.8 libc6 question

[Emanoil Kotsev]

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ThanX Daniel,
unfortunately you are not telling me anything new.
My question is how could I point iptables to the other libc.

Few things are going trough my mind:

1) exporting and mounting trough nfs on the compile-machine and then pointing 
the compiler to the directory mounted.
Question: after I install iptables where is it going to look for the 
libraries?? I don't think it will find the proper path

2) copying the libraries for ex. in /usr/local/lib
Question: On target machine the libs are in /lib ??? would iptables find them 
under /usr/local/lib (it is in ld.so.conf)

3) What about compiling iptables with no shared libraries as it will be 
permanently used - are the libc6 -> libc-2.3.1 included in iptables?

4) perhaps the easiest way if possible at all would be to upgrade the target 
machine

Which should I choose and are there any better ideas???

Thanks in advance for taking your time

unfortunately I tried to replace libc-2.2.5 on the target machine but it 
wasn't good idea :-)) I ran into "hella trouble".

I was lucky to have a backup of the system and I can just recommend 
BACKUP EVERYTHING POSSIBLE as often as you can - it safes time .

Unfortunately I don't want to restore everything from backup - so I wait for 
your advises.

regards

- --

On Tuesday 15 July 2003 23:03, Daniel Chemko wrote:
> Cross compiling is not a trivial matter when cross compiling different
> systems. Basically unless you are running vanilla x86 with compatible
> versions of libc, you will run into hella troubles getting into it.  As
> a solution, you will need either the libc from the destination
> architecture on the build machine, and point the compiler to build the
> program against the other libraries. I have never done this with
> iptables, but that is how you would go about it.
>
> -----Original Message-----
> From: Emanoil Kotsev [mailto:emanuel@abc.at]
> Sent: Tuesday, July 15, 2003 1:41 PM
> To: netfilter@lists.netfilter.org
> Subject: iptables 1.2.8 libc6 question
>
> Please help me to find information how to build iptables (1.2.8) for
> kernel
> 2.4.20 on my PC with libc-2.3.1 for another PC where libc-2.2.5 is
> installed.
>
> I have no problem to compile and install but iptables dies miserably
> trying to
> load libc6 which is actually a link to libc-2.2.5 on the target machine.
>
> What should I do?
>
> P.S above this I found quite a lot of documentation telling me how I can
>
> compile and install a linux kernel and iptables and aplications based on
>
> libiptc but nothing to tell me how I can link iptables to different libc
> and
> I don't want to make a mistake ...
>
> Thanks

- -- 
//----------------------
||
|| Emanoil Kotsev       
||
|| tel. 0043 1 9253175
||
\\--- penguin friendly--
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Re: iptables 1.2.8 libc6 question

[Daniel Chemko]

Emanoil Kotsev wrote:

>-----BEGIN PGP SIGNED MESSAGE-----
>Hash: SHA1
>
>ThanX Daniel,
>unfortunately you are not telling me anything new.
>My question is how could I point iptables to the other libc.
>
>Few things are going trough my mind:
>
>1) exporting and mounting trough nfs on the compile-machine and then pointing 
>the compiler to the directory mounted.
>Question: after I install iptables where is it going to look for the 
>libraries?? I don't think it will find the proper path
>  
>
Libc == dynamic so ld.so.conf will show you the way.

>2) copying the libraries for ex. in /usr/local/lib
>Question: On target machine the libs are in /lib ??? would iptables find them 
>under /usr/local/lib (it is in ld.so.conf)
>  
>
yeah

>3) What about compiling iptables with no shared libraries as it will be 
>permanently used - are the libc6 -> libc-2.3.1 included in iptables?
>  
>
Should be, static binaries are pretty simple if space isn't a concern. 
Hell, with libc static in the binary, you don't even need to get the 
other libc for the build platform. Hmm..

>4) perhaps the easiest way if possible at all would be to upgrade the target 
>machine
>  
>
Also a good idea if an upgrader is easily found. Depends on how many 
programs are installed as well.

>Which should I choose and are there any better ideas???
>
>Thanks in advance for taking your time
>
>unfortunately I tried to replace libc-2.2.5 on the target machine but it 
>wasn't good idea :-)) I ran into "hella trouble".
>  
>
Definitly - Basically only upgrades from distributions are the only 
practical way to accomplish this in larger platforms.

iptables 1.2.8 libc6 question

[Emanoil Kotsev]

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Hash: SHA1

Please help me to find information how to build iptables (1.2.8) for kernel 
2.4.20 on my PC with libc-2.3.1 for another PC where libc-2.2.5 is installed.

I have no problem to compile and install but iptables dies miserably trying to 
load libc6 which is actually a link to libc-2.2.5 on the target machine.

What should I do?

P.S above this I found quite a lot of documentation telling me how I can 
compile and install a linux kernel and iptables and aplications based on 
libiptc but nothing to tell me how I can link iptables to different libc and 
I don't want to make a mistake ...

Thanks

- -- 
//----------------------
||
|| Emanoil Kotsev       
||
|| tel. 0043 1 9253175
||
\\--- penguin friendly--
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=/tyx
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