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BiscuitOS is a Unix-like computer operating system that is composed entirely of free software, most of which is under the GNU General Public License and packaged by a group of individuals participating in the BiscuitOS Project. As one of the earliest operating systems based on the Linux kernel 0.11, it was decided that BiscuitOS was to be developed openly and freely distributed in the spirit of the GNU Project.

While all BiscuitOS releases are derived from the GNU Operating System and use the GNU userland and the GNU C library (glibc), other kernels aside from the Linux kernel are also available, such as those based on BSD kernels and the GNU Hurd microkernel.

Before you start this tour, you need install core toolchain on your host PC (such as Ubuntu16.04), so please install these tools on start.

  sudo apt-get install qemu gcc make gdb git
  sudo apt-get install indent

  On 64bit machine:
  sudo apt-get install lib32z1 lib32z1-dev
  sudo apt-get install libncurses5-dev

First of all, You need get source code of kernel for BiscuitOS from github, follow these steps to get newest and stable branch. The BiscuitOS project will help you easy to build a kernel iamge for BiscuitOS.

  git clone https://github.com/BiscuitOS/Kernel.git

The next step, we need to build Kernel with common Kbuild syntax. The Kbuild will help you easy to built kernel. So utilise this command on your terminal.

  cd */Kernel
  make defconfig
  make

If you finish above step, we will get the kernel image, but it doesn't work, as you know, a full system need kernel and rootfs. so you should get a running system. Don't worry, you can get it from BiscuitOS project.

  git clone https://github.com/BiscuitOS/BiscuitOS.git

The project will help to compiler a BiscuitOS distro named BiscuitOS-0.11.img, and copy it on */Kernel/, then running new system:

  cp -rf */BiscuitOS/output/BiscuitOS-0.11.img */Kernel/
  make start

Because Kernel project is written on Kbuild syntax, so U can use Kbuild syntax to add/delete or configure your owner kernel.

  make menuconfig
  or 
  make xconfig

Software is like sex. It's better when it's free

                 --- Linus Torvalds