This is a bunch of script for building cross-compile environments that compile binaries runnable on the original operating systems that ship with various ebook readers. This is useful for compiling e.g. a kexec that allows switching to fread.ink from the original operating system.

Supported devices:

• Kindle 4th gen
• Kindle 5th gen (untested)

Kindle 4th and 5th gen

Build toolchain

./build_k4.sh

If at some point in the future the above command fails because some of the requires files are no longer available at their previous URLs then you can find a backup inf the repo fread-ct-ng-backup which you can use like so:

cd ~/crosstool-ng-workdir/
mkdir -p .build
git clone https://github.com/fread-ink/fread-ct-ng-backup .build
ct-ng build

and the build should complete correctly.

Pre-compiled kexec

A pre-compiled version of kexec for kindle 4 is available in bin/.

Compile kexec

source env_k4.sh
./build_kexec.sh

If this fails because the kexec-tools tarball is no longer available at the original URL, you can manually download it from the repo fread-kexec-backup and place it in this directory, then re-run ./build_kexec.sh.

Attribution

This is all based on NiLuJe's work. In fact the scripts in this repository rely heavily on NiLuJe's released scripts and tc-ng configurations: See their latest "Cross-compilation ToolChain & patches" in this thread especially the x-compile.sh script within that file.