Compiling KOS on Linux
Overview
This tutorial is a step-by-step guide on how to setup a toolchain and KOS environment on your GNU/Linux system.
The toolchain consists of a C/C++ compiler (GCC), assembler and linker (binutils), and C library (newlib). As the Dreamcast has two processors - the SH4 CPU and the AICA (ARM) sound processor - the toolchain includes compilers for both.
KOS consists of the operating system core (kos) and a set of nicely integrated libraries (kos-ports).
Install script
Please consider trying this install script first: File:Kos setup script.zip. It will perform the steps below automatically.
Preparations
You need the following software installed:
- git
- make (build-essential package)
- tar/gzip/bzip2
- gcc/g++
- development packages of libjpeg and libpng
- patch
- texinfo (for makeinfo etc)
- wget
Downloading KOS
KOS is available through a Git repository at SourceForge. The standard install directory assumed in the configuration files is /opt/toolchains/dc/{kos, kos-ports}.
$ git clone git://git.code.sf.net/p/cadcdev/kallistios /opt/toolchains/dc/kos
Toolchain (cross-compiler and libraries)
After cloning the KOS repository, run the toolchain download+unpack+compile scripts:
$ cd /opt/toolchains/dc/kos/utils/dc-chain $ sh download.sh $ sh unpack.sh
For compilation of the cross-compiler and system libraries, use the following command. The erase=1 will delete temporary files after a successful build.
$ make erase=1
Host GCC versions 4.7, 4.9, 6.1, and 7.3 are known to work.
After this command completes successfully you have a working cross-compiler for Dreamcast and can compile KOS next.
Setting up KOS
You should read the documentation in the kos/doc directory for details, but here are the basic steps required to set up the KOS environment:
Go into the kos directory and copy the template configuration:
$ cp /opt/toolchains/dc/kos/doc/environ.sh.sample /opt/toolchains/dc/kos/environ.sh
Now edit environ.sh to match your installation. If you use the default installation directory you don't need to change anything.
Execute the following command to set the KOS environment variables:
$ source /opt/toolchains/dc/kos/environ.sh
Remember to do this every time you want to use the KOS environment in a newly opened shell. Dont't forget to run the above command again when editing environ.sh.
Now we are finally ready to compile KOS itself. In the kos directory, run:
$ cd /opt/toolchains/dc/kos $ make
KOS-Ports
KOS-Ports is a repository with commonly used libraries for development on the DC, like PNG or MP3 loading.
Clone the repository:
$ git clone --recursive git://git.code.sf.net/p/cadcdev/kos-ports /opt/toolchains/dc/kos-ports
Compile all KOS-ports using the build-all script
$ sh /opt/toolchains/dc/kos-ports/utils/build-all.sh
Now you should have a working Dreamcast development environment :-)
Check out the examples in the KallistiOS directory to find out how to use KOS in your own projects!