[Battlemesh] wshaper equivalent and smaller - (making the firmware smaller)

[cmsv]

On 10/08/2013 05:47 AM, Pau wrote:
> Another trick is to disable "opkg" since (probably) you are not gonna
> use it if the flash memory is so small.

I have thought about removing opkg but there are some optional packages
that are provided and quite useful for certain situations. what other
method could it be used to install a package ?
wget get can fetch but what is the mechanism that is used by opkg ?

for example removing
[ ] Remove ipkg/opkg status data files in final images
also helps but seems to break the possibility of installing an upgrade
package or a package. Am i correct ?

I also wondered if it is a good or bad idea to remove:
[*] Compile the kernel with Debug FileSystem enabled
> --
> ./p4u
> 
> 
> On Tue, Oct 8, 2013 at 11:39 AM, Bastian Bittorf <bittorf at bluebottle.com> wrote:
>> * cmsv <cmsv at wirelesspt.net> [08.10.2013 10:45]:
>>> Total: 169.8 KB
>>>
>>> Does anyone uses, recommend or know about a smaller equivalent script or
>>> package ?
>>
>> there are a lot of things where can screw to get your image smaller.
>>
>> first do this:
>> disbale debugging stuff in 'make menuconfig'
>> -> Global build settings
>> -> [ ] Compile the kernel with symbol table information
done
>>
>> (you can even disable wireless-debug for your driver)
Has been considered.

>>
>> additionally, ou can disable printk and swap, which saves ~100k:
>>
>> make kernel_menuconfig
>> -> General setup
>> [ ] Support for paging of anonymous memory (swap)
done
>> -> Configure standard kernel features (expert users)
>> [ ] Enable support for printk
done
what exactly is printk most useful for ?
>>
>> let us know, if it helps. for 4mb routers, the image
>> should not exceed 3.6mb
right now and for my testing model:
3.8M openwrt-ar71xx-generic-dir-615-c1-squashfs-factory.bin
3.2M openwrt-ar71xx-generic-dir-615-c1-squashfs-sysupgrade.bin
(includes some extra needed packages and scrips)

What other things could be removed without hurting the needed
functionality for a batman-adv atheros only based firmware with an
average of 400mhz cpu, 32mb ram and 4 mb flash.

Although the sysupgrade for my tetsing model is 3.2mb; for other
brands/models it goes slightly bigger last time i checked.

One other package that is using twice the size that it needs to use is
wpad which i have to use if i want ad-hoc to function with psk
encryption. I am not able to use the wpad-mini package which is half the
size of wpad pad due to this:

http://rooter.kyberian.net/tag/adhoc

and batman-adv is not able to communicate with other nodes if the
firmware uses wpad-mini.

I believe that there might be a patch out there but unsure about it or
if it has been added to AA.


>>
>> bye, bastian
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>> Battlemesh at ml.ninux.org
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