Version 8 (modified by MicheleSherrill, on Jan 9, 2009 at 5:41:19 AM) (diff)


The RTEMS Project officially supports only the CVS head and a current release branch. If you are interested in support for an older release, please contact JoelSherrill or visit Legacy Support for more information.

RTEMS has a policy to support current host operating systems, development tools and third party libraries where possible. The ability of the project to maintain all releases using the good will of RTEMS contributors is not possible and so resources are directed to the keeping RTEMS up to date. As stated above older releases can be maintain if you require it but you will have to fund that work.


The RTEMS Project recommends that you use use CVS to access our current development sources. Every attempt is made to keep the CVS head compilable and working on all targets but there are no guarantees. The CVS head is used to test bleeding edge tools and is always moving in features and stability.

Snapshot releases are occasionally cut from the head of the CVS tree. When cut, they will be announced to all mailing lists and placed on the RTEMS ftp site.

Release have release notes. Please refer to the release notes.

Release Series Notes

Information on 4.5 Series

The last release from this branch was 4.5.1-pre3 and made 17 October 2001 although as of May 2007 it is known to still in use by a number of users.