[PATCH v3 3/5] include/u-boot, lib/zlib: add sources for zlib decompression

[Joao Marcos Costa]

On Wed, 29 Jul 2020 11:27:45 -0400
Tom Rini <trini at konsulko.com> wrote:

> On Tue, Jul 21, 2020 at 11:22:57AM +0200, Joao Marcos Costa wrote:
> 
> > Add zlib (v1.2.11) uncompr() function to U-Boot. SquashFS depends on
> > this function to decompress data from a raw disk image. The actual
> > support for zlib into SquashFS sources will be added in a follow-up
> > commit.
> > 
> > Signed-off-by: Joao Marcos Costa <joaomarcos.costa at bootlin.com>
> > ---
> > Changes in v3:
> > 	- No changes since v2.
> > Changes in v2:
> > 	- Changed commit title and message, which were wrong and/or
> > misleading in v1.
> >  include/u-boot/zlib.h | 32 ++++++++++++++
> >  lib/zlib/uncompr.c    | 97
> > +++++++++++++++++++++++++++++++++++++++++++ lib/zlib/zlib.c
> > |  1 + 3 files changed, 130 insertions(+)
> >  create mode 100644 lib/zlib/uncompr.c  
> 
> Can you confirm that on a platform where we aren't enabling squashfs
> the new zlib functionality ends up being discarded at link time?
> Thanks!
> 

I dumped lib/zlib/zlib.o with readelf and the new functionality is not
discarded, even though the SquashFS support is not enabled, but this
issue will be fixed in the next version (v4). Thank you!