Thread: [Devil-linux-develop] ntop & net-snmp

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devil-linux-develop

[Devil-linux-develop] ntop & net-snmp

From: Heiko Z. <he...@zu...> - 2007-11-19 14:25:47

Hey,

it seems like the net-snmp update broke ntop in DL1.3 .
It works just fine in 1.2, but I can't figure out why it isn't working in
1.3.

I may be missing something, can somebody else take a look?

-- 

Regards
  Heiko Zuerker
  http://www.devil-linux.org

Re: [Devil-linux-develop] ntop & net-snmp

From: Serge L. <fi...@in...> - 2007-11-19 14:41:32

Hi,

Heiko Zuerker wrote:

> it seems like the net-snmp update broke ntop in DL1.3 .
> It works just fine in 1.2, but I can't figure out why it isn't working in
> 1.3.
> 
> I may be missing something, can somebody else take a look?

>From my yesterday build log (ntop):
--------------------------------------------
  **Testing Optional libraries and headers**

checking for Multithreading... ok
checking for openSSL... ok
checking for zlib... ok
checking for net-snmp-config... no
NET-SNMP is not present: SNMP support is disabled
--------------------------------------------

For some reasons ntop doesn't link against net-snmp. I'll try to find 'why'.

--
Sincerely,
Serge Leschinsky

Re: [Devil-linux-develop] ntop & net-snmp

From: Heiko Z. <he...@zu...> - 2007-11-19 15:26:29

On Mon, November 19, 2007 08:41, Serge Leschinsky wrote:
> Hi,
>
>
> Heiko Zuerker wrote:
>
>
>> it seems like the net-snmp update broke ntop in DL1.3 . It works just
>> fine in 1.2, but I can't figure out why it isn't working in 1.3.
>>
>>
>> I may be missing something, can somebody else take a look?
>>
>
>> From my yesterday build log (ntop):
>>
> --------------------------------------------
> **Testing Optional libraries and headers**
>
>
> checking for Multithreading... ok checking for openSSL... ok checking for
> zlib... ok checking for net-snmp-config... no NET-SNMP is not present: SNMP
> support is disabled --------------------------------------------
>
>
> For some reasons ntop doesn't link against net-snmp. I'll try to find
> 'why'.

It found it on my system.
checking for openSSL... ok
checking for zlib... ok
checking for net-snmp-config... net-snmp-config
net-snmp libs: -L/usr/lib -lnetsnmp


-- 

Regards
  Heiko Zuerker
  http://www.devil-linux.org

Re: [Devil-linux-develop] ntop & net-snmp

From: Serge L. <fi...@in...> - 2007-11-20 19:57:56

Heiko,

Heiko Zuerker wrote:

>> For some reasons ntop doesn't link against net-snmp. I'll try to find
>> 'why'.
> 
> It found it on my system.
> checking for openSSL... ok
> checking for zlib... ok
> checking for net-snmp-config... net-snmp-config
> net-snmp libs: -L/usr/lib -lnetsnmp
> 
Well, I've found and fixed linking (it was my fault). Now I got the following:

/usr/include/net-snmp/library/container.h: In function 'CONTAINER_FREE':
/usr/include/net-snmp/library/container.h:416: error: invalid lvalue in assignment
make[3]: *** [iface.lo] Error 1

Have you meant that error?

--
Sincerely,
Serge Leschinsky

Re: [Devil-linux-develop] ntop & net-snmp

From: Heiko Z. <he...@zu...> - 2007-11-20 20:25:14

On Tue, November 20, 2007 13:57, Serge Leschinsky wrote:
> Heiko,
>
>
> Heiko Zuerker wrote:
>
>
>>> For some reasons ntop doesn't link against net-snmp. I'll try to find
>>>  'why'.
>>>
>>
>> It found it on my system.
>> checking for openSSL... ok checking for zlib... ok checking for
>> net-snmp-config... net-snmp-config net-snmp libs: -L/usr/lib -lnetsnmp
>>
> Well, I've found and fixed linking (it was my fault). Now I got the
> following:
>
>
> /usr/include/net-snmp/library/container.h: In function 'CONTAINER_FREE':
> /usr/include/net-snmp/library/container.h:416: error: invalid lvalue in
> assignment make[3]: *** [iface.lo] Error 1
>
>
> Have you meant that error?
>

Yes that's exactly the error I get.

-- 

Regards
  Heiko Zuerker
  http://www.devil-linux.org

Re: [Devil-linux-develop] ntop & net-snmp

From: Serge L. <fi...@in...> - 2008-01-26 12:28:22

Hi,

The bug explanation (it is still open):

https://bugzilla.redhat.com/show_bug.cgi?id=389631

>> /usr/include/net-snmp/library/container.h: In function 'CONTAINER_FREE':
>> /usr/include/net-snmp/library/container.h:416: error: invalid lvalue in
>> assignment make[3]: *** [iface.lo] Error 1


--
Serge Leschinsky

Re: [Devil-linux-develop] ntop & net-snmp

From: Heiko Z. <he...@zu...> - 2008-01-26 15:12:42

> Hi,
>
> The bug explanation (it is still open):
>
> https://bugzilla.redhat.com/show_bug.cgi?id=389631
>
>>> /usr/include/net-snmp/library/container.h: In function
>>> 'CONTAINER_FREE':
>>> /usr/include/net-snmp/library/container.h:416: error: invalid lvalue in
>>> assignment make[3]: *** [iface.lo] Error 1

Yeah would be nice if they fix that soon.

-- 

Regards
  Heiko Zuerker
  http://www.devil-linux.org

Re: [Devil-linux-develop] ntop & net-snmp

From: Serge L. <fi...@in...> - 2008-02-09 13:06:56

Heiko,

I asked my colleague (a very experienced C coder) to help with the patch. After
several hours of the source code looking thru he had said, that the 'really
correct patch' will take a lot of time and efforts which he can't to afford.
Instead of this he suggested a 'quick fix' which allows to compile ntop but
produces the compiler warning. The patch is below, as you can see he just
removed void casting. So, it's the question - will we include this temporary fix
till a proper patch appears or not?

--- include/net-snmp/library/tools.h.orig    2008-02-07 14:43:10.000000000 +0300
+++ include/net-snmp/library/tools.h    2008-02-08 09:57:51.000000000 +0300
@@ -50,7 +50,7 @@

 /** @def SNMP_FREE(s)
     Frees a pointer only if it is !NULL and sets its value to NULL */
-#define SNMP_FREE(s)    do { if (s) { free((void *)s); s=NULL; } } while(0)
+#define SNMP_FREE(s)    do { if (s) { free(s); s=NULL; } } while(0)

 /** @def SNMP_SWIPE_MEM(n, s)
     Frees pointer n only if it is !NULL, sets n to s and sets s to NULL */

Heiko Zuerker wrote:
>> The bug explanation (it is still open):
>>
>> https://bugzilla.redhat.com/show_bug.cgi?id=389631
...
> 
> Yeah would be nice if they fix that soon.
> 

--
Sincerely,
Serge Leschinsky

Re: [Devil-linux-develop] ntop & net-snmp

From: Heiko Z. <he...@zu...> - 2008-02-10 13:45:57

Serge,

I don't think we have any other choice then using this patch until
something official is available.

Heiko

> Heiko,
>
> I asked my colleague (a very experienced C coder) to help with the patch.
> After
> several hours of the source code looking thru he had said, that the
> 'really
> correct patch' will take a lot of time and efforts which he can't to
> afford.
> Instead of this he suggested a 'quick fix' which allows to compile ntop
> but
> produces the compiler warning. The patch is below, as you can see he just
> removed void casting. So, it's the question - will we include this
> temporary fix
> till a proper patch appears or not?
>
> --- include/net-snmp/library/tools.h.orig    2008-02-07 14:43:10.000000000
> +0300
> +++ include/net-snmp/library/tools.h    2008-02-08 09:57:51.000000000
> +0300
> @@ -50,7 +50,7 @@
>
>  /** @def SNMP_FREE(s)
>      Frees a pointer only if it is !NULL and sets its value to NULL */
> -#define SNMP_FREE(s)    do { if (s) { free((void *)s); s=NULL; } }
> while(0)
> +#define SNMP_FREE(s)    do { if (s) { free(s); s=NULL; } } while(0)
>
>  /** @def SNMP_SWIPE_MEM(n, s)
>      Frees pointer n only if it is !NULL, sets n to s and sets s to NULL
> */
>
>
>
> Heiko Zuerker wrote:
>>> The bug explanation (it is still open):
>>>
>>> https://bugzilla.redhat.com/show_bug.cgi?id=389631
> ...
>>
>> Yeah would be nice if they fix that soon.
>>
>
> --
> Sincerely,
> Serge Leschinsky
>
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-- 

Regards
  Heiko Zuerker
  http://www.devil-linux.org