[Click] click/grid on embedded systems

[Douglas S. J. De Couto]

the click binary is so big because it has so much functionality (so 
many `elements')!

you can make it smaller by telling the build process to build a click 
binary that only contains code for the elements you need, using the 
`click-mkmindriver' tool.

i've used this successfully to make a userlevel click fit onto flash 
for an ipaq, which has similar space constraints to the linksys.  you 
can see an example of its use in this script: 
http://www.pdos.lcs.mit.edu/decouto/ipaq/build-ipaq-click.sh

i believe a linux module click would be smaller, as it has less library 
code included.  click-mkmindriver should support linux modules.

what was required to get click working on the linksys box?  if you have 
any patches, please send them!

On 25 Jan 2004, at 15:05, kevin at tackledesign.com wrote:

> Hi,
>
> I'm currently working on porting the Click/Grid platform to the 
> embedded MIPS
> board available in Linksys WRT54G Access Points. This platform is 
> ideal for this
> kind of application given it's flexibility and low cost (under $80 for 
> a
> complete linux based wireless router). Unfortunately it does have some 
> space
> constraints for storage and memory (4 Mb of Flash and 16 Mb of RAM).
>
> I've tried building the current version of Click from CVS and was 
> surprised to
> discover the size (my build was something on the order of 15 Mb for 
> the user
> level binary). Is this simply because of debug code or is Click just 
> that large?
>
> Are there any changes that I could make to strip out unneeded code?
>
> Ideally I'd like to be able to use Click as user level service for the 
> time
> being, but I'll be building a kernel module eventually. Are there 
> significant
> size differences for either of those?
>
> I will also be linking the code against uLibc as well, but I'm 
> guessing that
> won't have a huge affect (at least not on the order of 15 Mb)...
>
> Any thoughts or recommendations would be most appreciated!
>
> Thanks,
> Kevin
>
>
>
>
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--
Douglas S. J. De Couto    <decouto at csail.mit.edu>