Re: [meta-oe] net-snmp config help

[Jack Mitchell <ml@communistcode.co.uk>]

On 02/07/12 16:06, Jack Mitchell wrote:
> On 02/07/12 15:45, Jack Mitchell wrote:
>> Ok, so I managed to get net-snmp compiling however I now have an 
>> issue where the configure stage is picking up libpci and using that 
>> to configure net-snmp to look for pci devices on startup which my 
>> beaglebone doesn't have
>>
>>    root@beaglebone:~# snmpd
>>    pcilib: Cannot open /proc/bus/pci
>>    pcilib: Cannot find any working access method.
>>    root@beaglebone:~#
>>
>> Off I went and found a solution[1] which states that I should force 
>> the PCI_* defines to off *after* the configuration stage. So I go 
>> into my work directory and alter includes/net-snmp/net-snmp-config.h:
>>
>>    /* define if you have pci_lookup_name() */
>>    #undef HAVE_PCI_LOOKUP_NAME
>>
>>    /* Define to 1 if you have the <pci/pci.h> header file. */
>>    #undef HAVE_PCI_PCI_H
>>
>> Then compile with:
>>
>>     bitbake net-snmp -c compile -f
>>
>> Then
>>
>>     bitbake core-image-minimal
>>
>> Which does net-snmp do_install and then builds the rootfs. However 
>> this makes no difference and it still fails with the same error 
>> message on start. Is my work flow for this wrong, or is it 
>> re-configuring, I'm at a bit of a loss of what to do now?
>>
>> I suppose the correct procedure would be to find out why pcilibs is 
>> being detected and configured, then fix that. Could anyone point me 
>> in the right direction?
>>
>> Regards,
>> Jack.
>>
>> [1] 
>> http://stackoverflow.com/questions/9470494/snmpd-cannot-open-proc-bus-pci 
>>
>>
>
> It seems that udev is forcing PCI down every ones throats, is this 
> necessary, can it be built without? There seems to be a lot of extra 
> configuration in there to make it happen...
>
> Onward ho!
>

As a stop gap till I manage to get to the bottom of this properly, doing:

     bitbake core-image-minimal

to get the initial image and everything built properly

     bitbake -c cleansstate pciutils

To remove pci.h from the sysroot

     bitbake -c cleansstate net-snmp

to remove the net-snmp with pci config enabled

     bitbake net-snmp

to rebuild net-snmp without pci config enabled (due to it not finding pci.h)

     bitbake core-image-minimal

pciutils gets rebuilt, net-snmp stays configured without pci and 
everybody is happy (apart from the deterministic build goddess).

Regards,

-- 

   Jack Mitchell (jack@embed.me.uk)
   Embedded Systems Engineer
   http://www.embed.me.uk

--