Compiling KOS on Windows

Cygwin setup

1. Install Cygwin 32bit, setup-x86.exe from here http://cygwin.com/install.html
2. Click next twice, making sure to install from internet.
3. Choose install directory. I chose d:\cygwin. Click next.
4. Choose download directory. Does not affect install directory. Click next 3 times.
5. Chose packages to install. I chose Devel, Libs, and Utils. Your screen should look like this:

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1. Click next. When the download and install is completed (this can take some time), Cygwin should be good to go.

Toolchain (cross-compiler and libraries)

1. Run 32bit Cygwin Terminal as administrator

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1. Download kos-2.0.0-src.tar.gz from here http://sourceforge.net/projects/cadcdev/files/kallistios/2.0.0/
2. Create a folder /dc/ in your /Cygwin/usr/local/ folder
3. Create a folder /kos/ in your /Cygwin/usr/local/dc/ folder
4. Extract the contents of /kos-2.0.0-src/ into your /Cygwin/usr/local/dc/kos/ folder
5. Download this patch and extract into your dc-chain folder
6. In cygwin, navigate to your dc-chain folder. Since I installed the chain on my d:, my command is

$ cd d:/cygwin/usr/local/dc/kos/utils/dc-chain

1. Download the libs needed by dc-chain by running the script with this command:

$ ./download.sh

1. Extract the libs needed by dc-chain by running the script with this command:

$ ./unpack.sh

1. Patch the default kos install by running the script with this command:

$ ./patch.sh

1. Build the dc-chain with this command

$ make

KOS

1. Download this environ.sh and extract into your /Cygwin/usr/local/dc/kos/ folder
2. Navigate to your kos directory in Cygwin. Since I installed the chain on my d:, my command is

$ cd d:/cygwin/usr/local/dc/kos

1. Configure your environment by running this command:

$ . ./environ.sh

1. Build KOS by running the command

$ make

That's All! When kos is built, you are ready to start compiling your own code for the Dreamcast using Kos 2.0 and GCC 4.7.3.