zephyr/samples/application_development/external_lib
Keith Packard 0b90fd5adf samples, tests, boards: Switch main return type from void to int
As both C and C++ standards require applications running under an OS to
return 'int', adapt that for Zephyr to align with those standard. This also
eliminates errors when building with clang when not using -ffreestanding,
and reduces the need for compiler flags to silence warnings for both clang
and gcc.

Most of these changes were automated using coccinelle with the following
script:

@@
@@
- void
+ int
main(...) {
	...
-	return;
+	return 0;
	...
}

Approximately 40 files had to be edited by hand as coccinelle was unable to
fix them.

Signed-off-by: Keith Packard <keithp@keithp.com>
2023-04-14 07:49:41 +09:00
..
mylib
src
CMakeLists.txt
README.rst
prj.conf
sample.yaml

README.rst

.. _external_library:

External Library
#################

Overview
********

A simple example that demonstrates how to include an external static library
into the Zephyr build system.
The demonstrates both how to build the external library using a different build
system and how to include the built static library.

Windows Note
************

To use this sample on a Windows host operating system, GNU Make needs to be in
your path. This can be setup using chocolatey or by manually installing it.

Chocolatey Method
=================

Install make using the following command:

.. code-block:: bash

   choco install make

Once installed, build the application as normal.

Manual Install Method
=====================

The pre-built make application can be downloaded from
https://gnuwin32.sourceforge.net/packages/make.htm by either getting both the
``Binaries`` and ``Dependencies`` and extracting them to the same folder, or
getting the ``Complete package`` setup. Once installed and in the path, build
the application as normal.