[U-Boot] [PATCH] lib: zlib: update to 1.2.6

[Wolfgang Denk]

Dear Lei Wen,

In message <CALZhoSSk3D9UY48ND_6HdZX1N_gP3rq0LP4w1e1M5bp3brzN9Q at mail.gmail.com> you wrote:
> 
> > I wonder which benefits we get for this price we are paying?
> 
> The main reason I'd like to introduce this upgrade is for I want to
> add the compressing
> feature for uboot.

This should be make optional code, including any extensions /
additional functions that may be needed for zlib.

Most users will not need this, and they should not suffer (in terms of
increased memory footprint) from such a change.

> And the 1.2.6 has some fix for the deflate, so it
> is maybe a good
> base line for introducing it.

Which exact fix are you referring to?

> How about define a Macro like CONIFG_ENABLE_GZIP_COMPRESSION to compile
> the compression related code only when this flag is on?

This makes sense, but please use standard naming rules.  You will
probably provide a "zip" command, so make all this depend on
"CONFIG_CMD_ZIP" or so.

Best regards,

Wolfgang Denk

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