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Updating a Release System with ELF Programs
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.. warning:: 
    Migrated from: 
    https://cwiki.apache.org/confluence/display/NUTTX/Updating+a+Release+System+with+ELF+Programs

.. warning:: 
    Migrated from: 
    https://cwiki.apache.org/confluence/display/NUTTX/Updating+a+Release+System+with+ELF+Programs

You can enhance the functionality of your released embedded system by adding
ELF programs, which can be loaded from a file system. These programs can be
stored on an SD card or downloaded into on-board SPI FLASH, allowing for
easy updates or extensions to the system's firmware.

There are two ways you can accomplish this:

Partially linked
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This describes building the partially linked, relocatable ELF program that 
depends on a symbol table provided by the base firmware in FLASH.

Reference:
- See :doc:`Partially Linked ELF Programs <partially_linked_elf>`

Fully linked
============
This describes building a fully linked, relocatable ELF program that does 
not depend on any symbol table information.

Reference:
- See :doc:`Fully Linked ELF Programs <fully_linked_elf>`