41 lines
1.5 KiB
ReStructuredText
41 lines
1.5 KiB
ReStructuredText
.. _application_fundamentals:
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Application Fundamentals
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########################
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A Zephyr application is defined by creating a directory containing the
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following files.
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* Application source code files
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An application typically provides one or more application-specific files,
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written in C or assembly language. These files are usually located in a
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sub-directory called :file:`src`.
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* Kernel configuration files
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An application typically provides a configuration file (:file:`.conf`)
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that specifies values for one or more kernel configuration options.
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If omitted, the application's existing kernel configuration option values
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are used; if no existing values are provided, the kernel's default
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configuration values are used.
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A microkernel application typically provides an additional :abbr:`MDEF (Microkernel
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Definitions File)` under the extension :file:`.mdef`. This file defines
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all of the system's public microkernel objects. This file is not used with a
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nanokernel-only application.
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* Makefile
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This file typically contains a handful of lines that tell the build system
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where to find the files mentioned above, as well as the desired target
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platform configuration and kernel type (either microkernel or nanokernel).
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Once the application has been defined it can be built using a single command.
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The results of the build process, including the final application image,
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are located in a sub-directory called :file:`outdir`.
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For additional information see:
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* :ref:`application`
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