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Building Out-of-Tree Kernel Drivers for Linux
=============================================
Prerequisites
-------------
The system must have relevant Linux kernel headers or source code installed.
Build
-----
To build ``igb_uio`` driver, simply run ``make`` command
inside the ``igb_uio`` directory:
.. code-block:: console
cd igb_uio
make
If compiling against a specific kernel source directory is required,
it is possible to specify the kernel source directory
using the ``KSRC`` variable:
.. code-block:: console
make KSRC=/path/to/custom/kernel/source
Load
----
.. note::
These commands are to be run as ``root`` user.
The ``igb_uio`` driver requires the UIO driver to be loaded beforehand.
If ``uio`` is not built-in:
.. code-block:: console
modprobe uio
Then the out-of-tree driver may be loaded.
.. code-block:: console
insmod igb_uio.ko
Clean
-----
To clean the build directory, the following command can be run:
.. code-block:: console
make clean
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