To build ReactOS, you will need a suitable build environment. You can either setup your own, or use certain prebuilt packages. There are also a number of useful utilities you can optionally use.
First you need a suitable MinGW compiler suite. Some versions of the MinGW suite are buggy, and some distributions (like MSYS) have slight incompatibilities with our build system, please refer to the platform specific page for details.
Optionally, you can use a patch or merge utility to apply patches from bugzilla and to create patches for submission.
- HOWTO/setup a build environment for Windows
- HOWTO/setup a build environment for Linux
- HOWTO/setup a build environment for Linux64
- HOWTO/setup a build environment for FreeBSD
After setting up your build environment, see Building ReactOS for futher information.