| 1 | ============ |
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| 2 | Introduction |
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| 3 | ============ |
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| 4 | |
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| 5 | This document describes the RTEMS development |
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| 6 | environment. Discussions are provided for the following topics: |
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| 7 | |
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| 8 | - the directory structure used by RTEMS, |
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| 9 | |
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| 10 | - usage of the GNU Make utility within the RTEMS |
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| 11 | development environment, |
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| 12 | |
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| 13 | - sample applications, and |
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| 14 | |
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| 15 | - the RTEMS specific utilities. |
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| 16 | |
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| 17 | RTEMS was designed as a reusable software component. |
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| 18 | Highly reusable software such as RTEMS is typically distributed |
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| 19 | in the form of source code without providing any support tools. |
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| 20 | RTEMS is the foundation for a complex family of facilities |
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| 21 | including board support packages, device drivers, and support |
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| 22 | libraries. The RTEMS Development Environment is not a CASE |
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| 23 | tool. It is a collection of tools designed to reduce the |
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| 24 | complexity of using and enhancing the RTEMS family. Tools are |
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| 25 | provided which aid in the management of the development, |
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| 26 | maintenance, and usage of RTEMS, its run-time support |
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| 27 | facilities, and applications which utilize the executive. |
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| 28 | |
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| 29 | A key component of the RTEMS development environment |
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| 30 | is the GNU family of free tools. This is robust set of |
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| 31 | development and POSIX compatible tools for which source code is |
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| 32 | freely available. The primary compilers, assemblers, linkers, |
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| 33 | and make utility used by the RTEMS development team are the GNU |
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| 34 | tools. They are highly portable supporting a wide variety of |
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| 35 | host computers and, in the case of the development tools, a wide |
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| 36 | variety of target processors. |
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| 37 | |
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| 38 | It is recommended that the RTEMS developer become |
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| 39 | familiar with the RTEMS Development Environment before |
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| 40 | proceeding with any modifications to the executive source tree. |
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| 41 | The source code for the executive is very modular and source |
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| 42 | code is divided amongst directories based upon functionality as |
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| 43 | well as dependencies on CPU and target board. This organization |
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| 44 | is aimed at isolating and minimizing non-portable code. This |
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| 45 | has the immediate result that adding support for a new CPU or |
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| 46 | target board requires very little "wandering" around the source |
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| 47 | tree. |
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| 48 | |
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| 49 | .. COMMENT: COPYRIGHT (c) 1989-2010. |
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| 50 | |
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| 51 | .. COMMENT: On-Line Applications Research Corporation (OAR). |
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| 52 | |
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| 53 | .. COMMENT: All rights reserved. |
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| 54 | |
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![[RTEMS Logo]](/images/logo.png){kind=logo}
