pbimageviewer requires libzip, libunrar, libibitmap and
lib7zip to build, so the source code and pre-built
libs/headers are available here.  If you don't want to
build the libraries and headers from scratch yourself,
just download prebuilt.tar.gz and transfer the contents
to your build system.  Otherwise, follow the instructions
below.

N.B.  I have installed each pocketbook SDK in /usr/arm-* in the
style in which they were originally distributed.  I renamed the
SDK_6.3.0 sdk to arm-obreey6-linux-gnueabi so that it wouldn't
clash with the arm-obreey-linux-gnueabi sdk in SDK_481. The
instructions below are for this sdk system.  However, I expect
that most people would not have a similar system because it is
a lot of work to translate the official SDKs to the old style.
@m4mmon has provided instructions and patches for building the
required libraries, headers and pbimageviewer itself using the
official SDK_6.3.0 sdk itself.  To build against the official
sdk yourself, download build_sdk6.tgz from here, extract the
README_BUILD_SDK_FW6.txt file from the tarball, and follow the
instructions therein.  They replace the instructions below.


libunrar:
The provided makefile.unix file should be used in place of
the version in the unrar source directory.  To build a static
version of libunrar.a, run 'make -f makefile.unix staticlib'
and copy libunrar.a and dll.h (renamed from dll.hpp) to the
correct directories (usually /usr/arm-linux/{lib,include}
or /usr/arm-none-linux-gnueabi/{lib,include}).  The makefile
builds the arm-none-linux-gnueabi files by default, but
can be changed to arm-linux by changing which lines are
commented out in the makefile.

When compiling programs against the library, add "-D_UNIX" to
CFLAGS and CXXFLAGS if you get a lot of errors including <dll.h>
in your source code.


libzip:
simply configure using the right cross-compiled host, i.e.

./configure --host=arm-none-linux-gnueabi
or
./configure --host=arm-linux
or
./configure --host=arm-obreey-linux-gnueabi
or
./configure --host=arm-obreey6-linux-gnueabi

and then run make.

libibitmap:
This is a library I wrote for loading and converting image files
to grayscale Inkview ibitmap structures.  Instruction for building
it are in the source zipfile in the img2ibitmap directory.

lib7zip:
Unpack p7zip_9.20.1_src_all.tar.bz2, and copy makefile.linux_cross_arm_*
into the top level directory.  Copy the relevant makefile.linux_cross_arm_*
file to makefile.machine, and then run "make 7z".  You will need to copy
bin/7z.so to the /system/bin/ directory on the PocketBook device.

Unpack lib7zip-1.6.5.tar.gz, and apply the lib7zip.patch file inside the
top level directory (it adds /mnt/ext1/system/bin to the search path
for 7z.so).  Set the P7ZIP_SOURCE_DIR environmental variable to point
to the p7zip_9.20.1 directory.  Run configure using the right
cross-compiled host:

./configure --prefix=/usr --host=arm-linux
or
./configure --prefix=/usr --host=arm-none-linux-gnueabi
or
./configure --prefix=/usr --host=arm-obreey-linux-gnueabi

then run make.  The output will be at Lib7Zip/lib7zip.{a,h}.

For the fwv6 devices, newer versions of p7zip and libzip are required
for the compilers used on those systems.  Follow the steps above using
the p7zip_16.02_src_all.tar.bz2 and lib7zip-2.0.0.tar.gz tarballs.
In p7zip_16.02/, copy makefile.linux_cross_arm_obreey6_linux_gnueabi
to makefile.machine before running "make 7z".  In libzip-2.0.0/,
apply lib7zip.patch and run:

./configure --prefix=/usr --host=arm-obreey6-linux-gnueabi

before running make.  Note that the newer versions don't build with the
compilers used for the older firmware versions.