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Stephanos Ioannidis cff94bf7a0 cmake: Add GCC -Og flag fallback to -O0.
The -Og (optimise for debugging) flag is only available for GCC 4.8.0
and above, and specifying it for a GCC version lower than 4.8.0 will
result in a compilation error.

This commit adds a check for compiler -Og optimisation flag support and
a fallback to -O0 (disable optimisation) when -Og flag is unsupported.

Signed-off-by: Stephanos Ioannidis <root@stephanos.io>
2019-12-09 16:17:12 +01:00
.github/ISSUE_TEMPLATE
.known-issues
arch kconfig: Remove redundant 'default n' and 'prompt' properties 2019-12-09 16:14:50 +01:00
boards boards: arm: nordic: nrf5340_dk_nrf5340 uart dts config for BLE 2019-12-09 15:39:07 +01:00
cmake cmake: Add GCC -Og flag fallback to -O0. 2019-12-09 16:17:12 +01:00
doc doc: release notes: Update contents for 2.1.0 2019-12-08 20:56:58 -06:00
drivers kconfig: Remove redundant 'default n' and 'prompt' properties 2019-12-09 16:14:50 +01:00
dts drivers: spi: nrfx: Move MISO lines pull configuration to DT 2019-12-09 16:08:39 +01:00
ext
include Bluetooth: UUID: Expose bt_uuid_to_str to application 2019-12-09 17:15:05 +02:00
kernel kernel/mutex: Fix races, make unlock rescheduling 2019-12-03 12:33:17 -06:00
lib lib: os: uncrustify sem.c 2019-11-18 13:52:15 +01:00
misc
modules mbedtls: make all options depend on MBEDTLS 2019-11-15 17:00:13 -05:00
samples kconfig: Remove redundant 'default n' and 'prompt' properties 2019-12-09 16:14:50 +01:00
scripts syscalls: Remove gen_syscall_header.py 2019-12-09 16:08:50 +01:00
soc kconfig: Remove redundant 'default n' and 'prompt' properties 2019-12-09 16:14:50 +01:00
subsys Bluetooth: UUID: Expose bt_uuid_to_str to application 2019-12-09 17:15:05 +02:00
tests Bluetooth: UUID: Expose bt_uuid_to_str to application 2019-12-09 17:15:05 +02:00
.checkpatch.conf
.clang-format
.codecov.yml
.editorconfig
.gitattributes
.gitignore docs: guide: Add build system information 2019-11-15 14:58:51 -05:00
.gitlint
.mailmap
.shippable.yml
.uncrustify.cfg
CMakeLists.txt syscalls: Remove gen_syscall_header.py 2019-12-09 16:08:50 +01:00
CODE_OF_CONDUCT.md
CODEOWNERS syscalls: Remove gen_syscall_header.py 2019-12-09 16:08:50 +01:00
CONTRIBUTING.rst
Kconfig
Kconfig.zephyr
LICENSE
Makefile
README.rst
VERSION doc: release notes: Update contents for 2.1.0 2019-12-08 20:56:58 -06:00
version.h.in
west.yml
zephyr-env.cmd
zephyr-env.sh

.. raw:: html

   <a href="https://www.zephyrproject.org">
     <p align="center">
       <img src="doc/images/Zephyr-Project.png">
     </p>
   </a>

   <a href="https://bestpractices.coreinfrastructure.org/projects/74"><img
   src="https://bestpractices.coreinfrastructure.org/projects/74/badge"></a>
   <img
   src="https://api.shippable.com/projects/58ffb2b8baa5e307002e1d79/badge?branch=master">


The Zephyr Project is a scalable real-time operating system (RTOS) supporting
multiple hardware architectures, optimized for resource constrained devices,
and built with security in mind.

The Zephyr OS is based on a small-footprint kernel designed for use on
resource-constrained systems: from simple embedded environmental sensors and
LED wearables to sophisticated smart watches and IoT wireless gateways.

The Zephyr kernel supports multiple architectures, including ARM Cortex-M,
Intel x86, ARC, Nios II, Tensilica Xtensa, and RISC-V, and a large number of
`supported boards`_.

.. below included in doc/introduction/introduction.rst

.. start_include_here

Getting Started
***************

Welcome to Zephyr! See the `Introduction to Zephyr`_ for a high-level overview,
and the documentation's `Getting Started Guide`_ to start developing.

Community Support
*****************

Community support is provided via mailing lists and Slack; see the Resources
below for details.

.. _project-resources:

Resources
*********

Here's a quick summary of resources to help you find your way around:

* **Help**: `Asking for Help Tips`_
* **Documentation**: http://docs.zephyrproject.org (`Getting Started Guide`_)
* **Source Code**: https://github.com/zephyrproject-rtos/zephyr is the main
  repository; https://elixir.bootlin.com/zephyr/latest/source contains a
  searchable index
* **Releases**: https://zephyrproject.org/developers/#downloads
* **Samples and example code**: see `Sample and Demo Code Examples`_
* **Mailing Lists**: users@lists.zephyrproject.org and
  devel@lists.zephyrproject.org are the main user and developer mailing lists,
  respectively. You can join the developer's list and search its archives at
  `Zephyr Development mailing list`_. The other `Zephyr mailing list
  subgroups`_ have their own archives and sign-up pages.
* **Nightly CI Build Status**: https://lists.zephyrproject.org/g/builds
  The builds@lists.zephyrproject.org mailing list archives the CI
  (shippable) nightly build results.
* **Chat**: Zephyr's Slack workspace is https://zephyrproject.slack.com.  Use
  this `Slack Invite`_ to register.
* **Contributing**: see the `Contribution Guide`_
* **Wiki**: `Zephyr GitHub wiki`_
* **Issues**: https://github.com/zephyrproject-rtos/zephyr/issues
* **Security Issues**: Email vulnerabilities@zephyrproject.org to report
  security issues; also see our `Security`_ documentation. Security issues are
  tracked separately at https://zephyrprojectsec.atlassian.net.
* **Zephyr Project Website**: https://zephyrproject.org

.. _Slack Invite: https://tinyurl.com/y5glwylp
.. _supported boards: http://docs.zephyrproject.org/latest/boards/index.html
.. _Zephyr Documentation: http://docs.zephyrproject.org
.. _Introduction to Zephyr: http://docs.zephyrproject.org/latest/introduction/index.html
.. _Getting Started Guide: http://docs.zephyrproject.org/latest/getting_started/index.html
.. _Contribution Guide: http://docs.zephyrproject.org/latest/contribute/index.html
.. _Zephyr GitHub wiki: https://github.com/zephyrproject-rtos/zephyr/wiki
.. _Zephyr Development mailing list: https://lists.zephyrproject.org/g/devel
.. _Zephyr mailing list subgroups: https://lists.zephyrproject.org/g/main/subgroups
.. _Sample and Demo Code Examples: http://docs.zephyrproject.org/latest/samples/index.html
.. _Security: http://docs.zephyrproject.org/latest/security/index.html
.. _Asking for Help Tips: https://docs.zephyrproject.org/latest/guides/getting-help.html