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

[Pau]

Right, you cannot install standard packages if you don't have opkg but
you could just copy the files (uncompressed) to the root filesystem.
However, since you don't have enough space in the device (you are even
removing opkg to make the rest of the tools fit) it makes not sense to
install packages (just not possible).
--
./p4u


On Sat, Oct 12, 2013 at 6:36 PM, cmsv <cmsv at wirelesspt.net> wrote:
>
>
> 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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>